Datasheet
USB Audio Decoder LSI Series
AAC/WMA/MP3
+SD Memory Card + iPod
BU94502Cxxx Series
Description
Package
W(Typ) x D(Typ) x H(Max)
BU94502Cxxx series are WAV/AAC/WMA/MP3 decoder
LSI which contains USB host, SD card I/F, audio DAC,
system controller, regulator for internal CORE power
supply.
Features
USB2.0 Full Speed host I/F function contained.
SD card I/F function contained.
2
I C format I/F function contained.
2
Protocol conversion from I C to USB HID or from USB
2
HID to I C.
MP3 decode function contained.
(Available for MPEG1, 2 and 2.5, Layer 1, 2 and 3)
WMA decode function contained.
(Available for WMA9 standard and not available for DRM)
AAC decode function contained.
(Available for MPEG4 AAC-LC and not available for
DRM)
WAV format file playing function contained.
Sample Rate Converter contained.
System Controller contained.
FAT analysis function contained.
Folder pass table making function contained.
ID3TAG and WMATAG and AACTAG Analysis.
Fast forward playing and fast backward playing
function contained.
Resume function contained.
Reading a specified file data is possible from
connected memory.
LUN is selectable.
Sound Effect function contained.
Digital Audio Out function contained.
2
(I S, EIAJ, S/PDIF)
Audio DAC contained.
Regulator for internal CORE power supply contained.
VQFN040V6060
6.00mm x 6.00mm x 1.00mm
SQFP-T52
12.00mm x 12.00mm x 1.50mm
Applications
Audio products, etc
Line up
Part number
Package
Ordering part number
BU94502CMUV
VQFN040V6060
Reel of 2000
BU94502CMUV-E2
BU94502CKS2
SQFP-T52
Tray of 1000
BU94502CKS2
○Product structure：Silicon Monolithic integrated circuit
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○Radiation resistance design is not arranged
1/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Basic circuit application diagram
-part1
This LSI builds in regulator for internal CORE power supply (1.5V).
DVDD_M terminal of 10PIN connect to bypass condenser and don’t connect to power supply (3.3V)
Please confirm the optimal oscillation circuit parameters applicable to your systems or products with the
oscillator manufacturer in advance.
VQFN040V6060 package exposes its frame of the backside of package. Note that this part is assumed to
use after providing heat dissipation treatment to improve heat dissipation efficiency. Try to occupy as wide as
possible with heat dissipation pattern not only on the board surface but also the backside.
Figure 1. an example of connection circuit application(BU94502CMUV)
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
2/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Basic circuit application diagram
-part2
This LSI builds in regulator for internal CORE power supply (1.5V).
DVDD_M terminal of 52PIN connect to bypass condenser and don’t connect to power supply (3.3V)
Please confirm the optimal oscillation circuit parameters applicable to your systems or products with the
oscillator manufacturer in advance.
Figure 2. an example of connection circuit application(BU94502CKS2)
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
3/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Difference of BU94502Cxxx Series features
Item
BU94502CMUV
BU94502CKS2
Package
VQFN040V6060
SQFP-T52
Number of pins
Power supply
USB
Host I/F
SD card I/F
40pin
52pin
3.3V (inner 1.5V regulator )
USB Full speed(12Mbps),
USB mass storage class
3.3V (inner 1.5V regulator )
USB Full speed(12Mbps),
USB mass storage class
SPI mode
SD, SDHC, MMC, mini-SDcard
SPI mode
SD, SDHC, MC, mini-SDcard
Supported
Supported
Supported
Supported
Supported
Supported
Supported
Supported
Protocol conversion from
I2C to USB HID or from
USB HID to I2C
2
I C command I/F
(Slave)
Patch cord download
Change the Setting of
timeout and retry mode
in USB memory or SD
card mount operation
Audio line output
Digital audio output
Sample rate convertor
clock
Playable MP3 files
Supported
Supported
I S, EIAJ, SPDIF
I S, EIAJ, SPDIF
Supported
Supported
2
16.9344MHz
(Note 1)
*.mp3, *.mp2, *.mp1
2
16.9344MHz
(Note 1)
*.mp3, *.mp2, *.mp1
Playable WMA files
*.asf, *.wma
*.asf, *.wma
Playable AAC files
*.m4a, *.3gp, *.mp4
*.m4a, *.3gp, *.mp4
Playable WAV files
*.wav
*.wav
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
4/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Block diagram
USB
I/F
File
System
(FAT12
/16/32)
MP3/WMA/
AAC/WAV
Decoder
I2S
OUT
Data
Buffer
TAG Analysis /
Browsing
SD
I/F
16.9344
MHz
3.3V
USB/
System
PLL
1.5V LDO
USB/SD
SRC
SPDIF
OUT
I2S Out
SPIDIF Out
System Controller
Audio
DAC
Command
I/F
Power
AMP
Serial
(SPI)
Data I/F
Title 5. SONG_E
01:10 Album ALBUM Z
Artist ARTIST A
User I/F
MCU
Main Control Block
Figure 3. Block diagram
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Arrangement of Terminals
BU94502CMUV
BUSY
MCHNG
SEARCH
IRPTO
7
6
5
4
DVSSIO
SCL
8
TMODE
SDA
9
RESETX
DVDD_M
10
3
2
1
DVSSIO
11
40
SD_CS
DVDDIO
12
39
SD_DI
TEST1
13
38
SD_CLK
XIN_PLL
14
37
SD_DO
XOUT_PLL
15
36
SD_CON
TEST2
16
35
DAVDD
BU94502CMUV
VQFN040V6060
RDACO
31
DAVSS
23
24
25
26
27
28
29
30
AMUTE
22
DVDDIO
21
MCLK
32
20
BCK
19
AVSSC
DATA
AVDDC
LRCK/SPDIF
VCDACO
REXTI
LDACO
33
CLK24MI
34
18
USBDP
17
USBDM
TEST3
TEST4
Figure 4. Arrangement of Terminals (BU94502CMUV)
BU94502CKS2
N.C.
DVSSIO
46
N.C.
47
RESETX
48
IRPTO
N.C.
49
TMODE
SEARCH
SCL
BUSY
SDA
51 50
MCHNG
DVDD_M
52
45
44
43
42
41
40
1
39
N.C.
DVDDIO
2
38
SD_CS
TEST1
3
37
SD_DI
XIN_PLL
4
36
SD_CLK
XOUT_PLL
5
35
SD_DO
N.C.
6
34
SD_CON
N.C.
7
33
N.C.
TEST2
8
32
N.C.
TEST3
9
31
DAVDD
TEST4
10
30
LDACO
AVDDC
11
29
VCDACO
AVSSC
12
28
RDACO
N.C.
13
27
DAVSS
CLK24MI
LRCK/SPDIF
N.C.
21
22
23
24
25
26
AMUTE
REXTI
20
N.C.
19
DVDDIO
18
N.C.
17
MCLK
16
DATA
15
BCK
14
USBDP
BU94502CKS2
SQFP-T52
USBDM
DVSSIO
Figure 5. Arrangement of Terminals (BU94502CKS2)
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
6/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Description of Terminals -part1
BU94502CMUV
No
1
Pin Name
DVSSIO
IO Cir
IO
－
－
PU
Function
－
GND terminal
H: Release RESET,
L: RESET
Test mode terminal. Connect it to GND.
Connection interrupt output terminal
Search flag output terminal
File play end flag output terminal
Command analysis BUSY output temrinal
2
I C slave clock input terminal
2
I C slave data I/O terminal
CORE power (VDD2) monitor terminal. Connect it to bypass
capacitor.
GND terminal
IO power (VDD1) terminal
Test mode terminal. Connect it to GND.
X'tal (16.9344MHz) connection input terminal.
X'tal (16.9344MHz) connection output terminal.
Pull it up at VDD1 power.
Pull it up at VDD1 power.
(Note 3)
2
RESETX
A
I
PU
3
4
5
6
7
8
9
TMODE
IRPTO
SEARC
MCHNG
BUSY
SCL
SDA
H
B
B
B
B
I
I
I
O
O
O
O
I
I/O
10
DVDD_M
－
－
－
11
12
13
14
15
16
17
DVSSIO
DVDDIO
TEST1
XIN_PLL
XOUT_PLL
TEST2
TEST3
－
－
－
E
E
H
H
－
－
I
I
O
I
I
18
TEST4
H
I
－
－
－
－
－
PU
PU
(Note
PU
19
20
21
22
AVDDC
AVSSC
USB_DM
USB_DP
－
－
C
C
－
－
I/O
I/O
－
－
－
－
23
REXTI
D
O
－
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
CLK24MI
LRCK/SPDIF
BCK
DATA
MCLK
DVDDIO
AMUTE
DAVSS
RDACO
VCDACO
LDACO
DAVDD
SD_CON
SD_DO
SD_CLK
SD_DI
SD_CS
B
B
B
B
B
－
G
－
F
J
F
B
B
B
B
B
B
I/O
O
O
O
O
－
O
－
O
O
O
－
I
I
O
O
O
－
－
－
－
－
(Note 2)
(Note 2)
1) (Note 3)
(Note 3)
PU
－
－
－
－
－
－
－
－
－
－
－
(Note 3)
PU
－
－
－
－
Test mode terminal. Connect it to GND.
USB Power supply (VDD1) terminal
USB GND terminal
USB D－I/O terminal
USB D+ I/O terminal
USB bias resistor (12kΩ) connecting terminal
Arrange the resistance of 12kΩ near PIN, and wiring on the PIN
side doesn't cross with other signal lines.
24MHz clock input terminal at SRC through mode
Digital Audio channel clock or SPDIF output terminal
Digital Audio bit clock output terminal
Digital Audio data output terminal
Audio Master clock (12.288MHz/16.9344MHz) output terminal
IO Power supply (VDD1) terminal
Audio Mute output terminal (H：MUTE OFF, L：MUTE ON)
Audio DAC GND terminal
Audio DAC Rch Line output terminal
Audio DAC Reference voltage output terminal
Audio DAC Lch Line output terminal
Audio DAC Power supply (VDD1) terminal
SD card Connect terminal
SD card Data In terminal
SD card Clock terminal
SD card Data Out terminal
SD card Chip select terminal
(Note 1) Pull-Up turns OFF when L is input.
(Note 2) An external pull-up resistor is required because of Open Drain IO
(Note 3) please input L level directly without resistance when you input L to the terminal with Pull-Up (about 33 kΩ)
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
7/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Description of Terminals -part2
BU94502CKS2
No
Pin Name
IO Cir
IO
PU
－
－
－
－
－
－
－
PU
PU
(Note
PU
1
2
3
4
5
6
7
8
9
DVSSIO
DVDDIO
TEST1
XIN_PLL
XOUT_PLL
N.C.
N.C.
TEST2
TEST3
－
－
－
E
E
－
－
H
H
－
－
I
I
O
－
－
I
I
10
TEST4
H
I
11
12
13
14
15
AVDDC
AVSSC
N.C.
USB_DM
USB_DP
－
－
－
C
C
－
－
－
I/O
I/O
－
－
－
－
－
16
REXTI
D
O
－
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
CLK24MI
LRCK/SPDIF
N.C.
BCK
DATA
MCLK
N.C.
N.C.
DVDDIO
AMUTE
DAVSS
RDACO
VCDACO
LDACO
DAVDD
N.C.
N.C.
SD_CON
SD_DO
SD_CLK
SD_DI
SD_CS
N.C.
DVSSIO
N.C.
N.C.
RESETX
TMODE
IRPTO
N.C.
SEARCH
MCHNG
BUSY
SCL
SDA
B
B
－
B
B
B
－
－
－
G
－
F
J
F
B
－
－
B
B
B
B
B
－
－
－
－
A
H
B
－
B
B
B
I
I
I
O
－
O
O
O
－
－
－
O
－
O
O
O
－
－
－
I
I
O
O
O
－
－
－
－
I
I
O
－
O
O
O
I
I/O
52
DVDD_M
－
－
1) (Note 3)
(Note 3)
PU
－
－
－
－
－
－
－
－
－
－
－
－
－
－
－
－
(Note 3)
PU
－
－
－
－
－
－
－
－
(Note 3)
PU
－
－
－
－
－
－
(Note 2)
(Note 2)
－
Function
GND terminal
IO power (VDD1) terminal
Test mode terminal. Connect it to GND.
X'tal (16.9344MHz) connection input terminal.
X'tal (16.9344MHz) connection output terminal.
Non Connection
Non Connection
Pull it up at VDD1 power.
Pull it up at VDD1 power.
Test mode terminal. Connect it to GND.
USB Power supply (VDD1) terminal
USB GND terminal
Non Connection
USB D－I/O terminal
USB D+ I/O terminal
USB bias resistor (12kΩ) connecting terminal
Arrange the resistance of 12kΩ near PIN, and wiring on the PIN
side doesn't to cross with other signal lines.
24MHz clock input terminal at SRC through mode
Digital Audio channel clock or SPDIF output terminal
Non Connection
Digital Audio bit clock output terminal
Digital Audio data output terminal
Audio Master clock (12.288MHz/16.9344MHz) output terminal
Non Connection
Non Connection
IO Power supply (VDD1) terminal
Audio Mute output terminal (H：MUTE OFF, L：MUTE ON)
Audio DAC GND terminal
Audio DAC Rch Line output terminal
Audio DAC Reference voltage output terminal
Audio DAC Lch Line output terminal
Audio DAC Power supply (VDD1) terminal
Non Connection
Non Connection
SD card Connect terminal
SD card Data In terminal
SD card Clock terminal
SD card Data Out terminal
SD card Chip select terminal
Non Connection
GND terminal
Non Connection
Non Connection
H: Release RESET, L: RESET
Test mode terminal. Connect it to GND.
Connection interrupt output terminal
Non Connection
Search flag output terminal
File play end flag output terminal
Command analysis BUSY output terminal
2
I C slave clock input terminal
2
I C slave data I/O terminal
CORE power (VDD2) monitor terminal
Connect it to bypass capacitor.
(Note 1) Pull-Up turns OFF when L is input.
(Note 2) An external pull-up resistor is required because of Open Drain IO
(Note 3) please input L level directly without resistance when you input L to the terminal with Pull-Up (about 33 kΩ)
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
8/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Terminal equivalent circuit diagram
A
DVDDIO
B
DVDDIO
DVDDIO
C
D
DVDDIO
D
P
AVDDC
AVDDC
D
M
DVSSIO
E
VDD_PLL
F
VDD_PLL
XIN
15KΩ
AVSSC
15KΩ
AVSSC
DVSSIO
G
DVDDIO
DAVDD
AVSSC
H
DVDDIO
XOUT
VSS_PLL
VSS_PLL
DVSSIO
DAVSS
I
DVSSIO
J
DAVDD
DVSSIO
DAVSS
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
9/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Description of each block’s movement
-part1
1.
USB host interface
2.
Builds in the USB Full speed (12Mbps) HOST control function.
Supports the USB mass storage class.
2
Converts the protocol from I C to USB (HID) or vice versa during communications with the master
microcomputer.*
Builds in isochronous transmission functions up to 192byte/Frame. *
Builds in the interrupt IN transfer function. *
Doesn’t support external HUB.
Doesn’t support MTP.
*These functions are available for a device having two or more configurations.
SD card interface
3.
Supports the SPI mode.
Supports SDHC memory cards.
Supports MMC, mini-SD and micro-SD cards.
Does not support CPRM.
2
I C command interface (Slave I/F)
4.
Communicates with the master microcomputer using the I C interface format.
2
Operates as I C slave I/F.
Supports the standard mode (100kbps) and the fast mode (400kbps).
Supports 7-bit addresses.
Audio output
5.
Supports audio line outputs from built-in 1bit-DAC.
Builds in the digital soft mute function. *
2
Supports digital audio outputs of the I S format, the EIAJ format and those and the digital audio interface
(SPDIF).
Builds in sound effects including POPS, JAZZ, ROCK, CLASSIC, R&B and Bass Boost. *
*This is available for audio line outputs only.
Sample rate converter
6.
Converts all support sample rates to 44.1 kHz based on the polyphase calculation.
Selection of sample rate converter ON / OFF is possible by the command configuration.
2
* Supports only digital audio outputs of the I S and EIAJ format and
When sample rate converter is used in off, enter the clock of 24.576 MHz synchronizing with the clock of 16.9344
MHz ( enter XIN_PLL terminal ) to the CLK24MI terminal.
System controller
2
Control all operations including interface control to the master microcomputer, USB device access, SD card
access, FAT analysis, sort function, decoding, encoding and audio output.
7.
FAT analysis
Supports FAT32, FAT16 and FAT12 file system.
Supports VFAT (long file name).
Supports multi-partition up to 1 partition.
Supports multi-drive up to 1 drive.
Supports changeover of LUN (Logical Unit Number) and possible that Test Unit Ready of other LUN is confirmed
during the playback.
Supports playable folder hierarchies up to 16 hierarchies whose full path including the file name is within 260
characters.
Supports playable file extension of *.wav for WAV files.
Supports playable file extensions of *.m4a, *.3gp and *.mp4 for AAC files.
Supports playable file extensions of *.asf and *.wma for WMA files.
Supports playable file extensions of *.mp3, *.mp2 and*.mp1 for MP3 files. For *.mp2 and *.mp1, the function
allows you to select whether to play. Does not extinguish between upper case letters and lower case letters of file
extensions.
Up to 256 folders and 256 files can be sorted and played in the order of UNICODE when sorting functional
effective.
Can obtain 5 file names ahead from current music file.
Can obtain a folder name or file name within 128 bytes.
Supports 512, 1024, 2048 and 4096 bytes per sector.
Playable file size up to 2G-1 byte. A file over 2Gbyte is recognized as a playable file, too. But, it is for 2Gbyte
-1byte that it can play.
Supports the device size up to FAT specification (2T byte).
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
10/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Description of each block’s movement
8.
-part2
Control from master microcomputer (little endian order)
2
Can control from the master microcomputer using the I C interface.
Controllable using commands of play, pause, stop, tune skip, tune forward, folder move, device change, volume
setting, repeat change, random play, digital audio output setting, sound effect setting and etc.
Can read information on internal status during play or stop, folder number, file number within the folder, play time,
total number of folders, total number of files, name of folder being played, name of file being played and TAG (title,
artist, album, genre), and etc.
9.
MP3 decoder
Supports MPEG audio 1, 2 and 2.5.
Supports Layer1, 2 and 3.
Supports sample rate of 8 k, 16 k, 32 k, 11.025 k, 22.05 k, 44.1 k, 12 k, 24 k and 48 kHz.
Supports bit rate of 8 to 320 kbps and VBR (Variable Bit Rate). *Excluding the free format
Supports ID3TAG V1.0, V.1, 1, V2.2, V2.3 and V2.4.
(Up to 128 bytes can obtain for album, artist, title and genre, respectively.)
10.
WMA decoder
11.
AAC decoder
Supports MPEG4 AAC-LC (Audio stream).
Based on 3GPP TS 26.244 and iTunes.
Supports File Type of m4a, mp4 and 3gpX. (X stands for any numeric value.)
Not supports DRM files.
Supports sample rate of 8 k, 16 k, 32 k, 11.025 k, 22.05 k, 44.1 k, 12 k, 24 k and 48 kHz.
Supports bit rate of 8 to 320kbps and VBR (Variable Bit Rate).
Supports AACTAG (iTunes Meta-data and 3GP Meta-data).
(Up to 128 bytes can obtain for album, artist, title and genre, respectively.)
*For files other than those encoded by iTunes, sound interruption may occur when skipping or forwarding to the
next tune if streams such as gaps and video data are contained in the file.
12.
WAV play
Supports WAV format.
Supports sample rate of 8 k, 16 k, 32 k, 11.025 k, 22.05 k, 44.1 k, 12 k, 24 k and 48 kHz.
Supports 16-bit PCM data.
Supports RIFF TAG.
(Up to 128 bytes can obtain for album, artist, title and genre, respectively.)
13.
Repeat and random play
14.
Supports Windows Media Audio 9 standard.
Not supports DRM files.
Supports sample rate of 8 k, 16 k, 32 k, 11.025 k, 22.05 k, 44.1 k and 48 kHz.
Supports bit rate of 5 to 384 kbps and VBR (Variable Bit Rate).
Supports WMA-TAG.
(Up to 128 bytes can obtain for album, artist, title and genre, respectively.)
Supports repeat within the memory, repeat within folder and repeat with single tune.
Supports random play in the whole memory or the playing Folder.
Can select auto-play of next music or stop playing at the end of current music playing.
Read from files within memory
Can read the data from specified file stored in the specified folder within the memory.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Absolute maximum ratings
(Ta = 25℃)
Parameter
Supply voltage(Analog, I/O)
Input voltage
Storage temperature range
Operating temperature range
VQFN040V6060 Package
(Note 1)
Power dissipation
SQFP-T52 Package
(Note 1)
Power dissipation
Symbol
VDD1MAX
VIN
TSTG
Limits
-0.3 to 4.5
-0.3 to VDD1 + 0.3
-55 to 125
Unit
V
V
Comment
DVDDIO, DAVDD, AVDDC
TOPR
-40 to 85
PD1
800
mW
BU94502CMUV
PD2
850
mW
BU94502CKS2
C
C
(Note 1)：74.2mm × 74.2mm × 1.6mm, FR4, 1-layer glass epoxy board (Copper area 23.69mm2)
In the case of use at Ta=25℃ or more, 8mW should be reduced per 1℃.
(Note 2)：In the case of use at Ta=25℃ or more, 8.5mW should be reduced per 1℃.
Operating conditions
(Ta = 25℃)
Parameter
Supply voltage(Analog, I/O)
Symbol
VDD1
Limits
3.0 to 3.6
Unit
V
Comment
DVDDIO, DAVDD, AVDDC
Electrical characteristics
(Unless specified, Ta=25℃VDD1=3.3V, DVSS=AVSSC=VSS_PLL=DAVSS=0V, XIN_PLL=16.9344MHz)
Limits
Parameter
Symbol
Unit
Condition
MIN.
TYP.
MAX.
<Total >
Circuit current
When USB memory is
IDD1USB1
51.0
75.0
mA
(Note 1)
(VDD1 USB1)
played.
(Note 1)
Circuit current (VDD1 SD1) IDD1SD1
26.0
45.0
mA
When SD card is played.
<Digital block>
(Note 2)
H-Level input voltage
VIH
VDD1*0.7
VDD1
V
－
(Note 2)
L-Level input voltage
VIL
DVSS
VDD1*0.3
V
－
(Note 3)
H-Level output voltage1
VOH1
VDD1-0.4
VDD1
V
IOH=-1.6mA
－
(Note 3)
L-Level output voltage1
VOL1
0
0.4
V
IOL=1.6mA
－
(Note 4)
L-Level output voltage2
VOL2
0
0.4
V
IOL=3.6mA
－
(Note 5)
H-Level output voltage3
VOH3
VDD1-0.4
VDD1
V
IOH=-0.6mA
－
(Note 5)
L-Level output voltage3
VOL3
0
0.4
V
IOL=0.6mA
－
(Note 6)
H-Level output voltage4
VOH4
VDD1-1.0
VDD1
V
IOH=-1.6mA
－
(Note 6)
L-Level output voltage4
VOL4
0
1.0
V
IOL=1.6mA
－
<USB-HOST >
(Note 7)
H-Level input voltage
VIHUSB VDD1*0.6
VDD1
V
－
(Note 7)
L-Level input voltage
VILUSB
AVSSC
VDD1*0.3
V
－
(Note 7)
Output impedance(H)
ZOH
22.0
45.0
60.0
Ω
(Note 7)
Output impedance(L)
ZOL
22.0
45.0
60.0
Ω
(Note 7)
H-Level output voltage
VOHUSB VDD1-0.5
VDD1
V
－
(Note 7)
L-Level output voltage
VOLUSB
0
0.3
V
－
(Note 7)
Rise/Fall time
Tr/Tf
11
ns
Output capacity 50pF
－
－
(Note 7)
Voltage of crossing point
VCRS
VDD1/2
V
Output capacity 50pF
－
－
(Note 7)
Range of differential input
VDIFF
0.8
2.5
V
－
(Note 7)
Differential input sensitivity
VSENS
0.2
V
－
－
(Note 7)
Pull-down resistance
RPD
14.25
20.0
24.8
kΩ
<Audio DAC>
(Note 8)
Distortion rate
THD
0.005
0.05
%
1kHz, 0dB, sine,
－
(Note 8)
Dynamic range
DR
90
dB
1kHz, -60dB, sine,
－
－
(Note 8)
S/N ratio
S/N
66
96
dB
1kHz, 0dB, A-weighted,
－
(Note 8)
Max output level
VSMAX
0.60
0.75
Vrms
1kHz, 0dB, sine,
－
BU94502CMUV
BU94502CKS2
(Note 1) 3.3V system I/O, Analog Power supply(VDD1),
1kHz, 0dB, sine-wave playing
(Note 2) 2, 3, 7-9, 13, 14, 16-18, 24, 36, 37 pin
(Note 3) 4-7, 24-28, 30 pin
(Note 4) 9 pin
(Note 5) 38-40 pin
(Note 6) 15 pin
(Note 7) 21, 22 pin
(Note 8) 32, 34 pin output no-load
(Note 1) 3.3V system I/O, Analog Power supply(VDD1),
1kHz, 0dB, sine-wave playing
(Note 2) 3, 4, 8-10, 17, 34, 35, 43, 44, 49-51 pin
(Note 3) 45,47-49,17,18,20-22,26 pin
(Note 4) 51 pin
(Note 5) 36-38 pin
(Note 6) 5 pin
(Note 7) 14, 15 pin
(Note 8) 28, 30 pin output no-load
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
12/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Application Information
1. Clock and Reset
Clock
Clock name I/O
XIN_PLL
I
XOUT_PLL O
Function
X'tal (16.9344MHz) connection input terminal
X'tal (16.9344MHz) connection terminal
Reset
Signal name I/O
RESETX
Remarks
-
Function
I
Remarks
System reset input terminal
-
Please release the reset signal continue L input for more than 100 us after clock input from the oscillation I/O terminal
becomes stable. (See Figure 6.)
Waiting time for
oscillation stabilization
fclk
Power
supply
XIN_PLL
RESETX
tRSTX
Figure 6. Reset Timing
Rating
Item
Code
Clock frequency
Reset L interval
min
typ
max
fCLK
16.9302
16.9344
16.9386
tRSTX
100
-
-
Unit
Remarks
MHz us
-
2. USB I/F
USB I/O interface
Signal name I/O
Function
Remarks
USB_DP
I/O
USB D+ I/O terminal
-
USB_DM
I/O
USB D- I/O terminal
-
REXTI
O
USB bias resistor connection terminal Connect a resistor of 12 kΩ±1% to GND.
This interface communicates with the USB device using USB_DP and USB_DM differential signals.
REXTI terminal is used to connect to the bias resistor in the USB-PHY block.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
13/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
3. SD I/F
SD memory card SPI interface
Signal name I/O
Function
Remarks
SD_CS
O
SD chip select
-
SD_CLK
O
SPI clock
-
SD_DI
O
SPI data input
-
SD_DO
I
SPI data output
SD_CON
I
SD card connect detection terminal
H: Do not detect SD card connect,
L: Detect SD card connect
This interface connects to the SD memory card slot to communicate with the SD memory device.
Supports the SPI mode.
Supports SD, SDHC memory cards and MMC, mini-SD and micro-SD cards.
Does not supports CPRM.
Since the SD memory card slot needs to detect the insertion status of the SD memory device, be sure to use the slot
having the SD memory card insertion status detection terminal. The SD_CON terminal is pulled up within the device
and detects “SD card connect” when L is input.
The SD_CON terminal is pulled up within the device and detects “SD card connect” when L is input.
3.1 Timing
(Unless specified, Ta=25℃, VDD1=3.3V, Load=20pF, 10kΩ)
Item
Symbol
min
Rating
typ
max
5
-
Unit
SD_CS Setup time
Tcss
-
SD_CS Hold time
Tcsh
-
15
-
us
SD_CLK Clock Frequency
Tclk
-
13.5
-
MHz
SD_DI Output delay
Tod
-20
-
20
ns
SD_DO Data in Setup time
Tds
18
-
-
ns
SD_DO Data in Hold time
Tdh
5
-
-
ns
Output High Voltage
Voh
0.625*VDD1
-
-
V
Output Low Voltage
Vol
-
-
0.25*VDD1
V
Remarks
us
Tcsh
Tcss
SD_CS
Tclk
Voh
SD_CLK
Vol
Tod
SD_DI
SD_DO
MSB
MSB
Tds
Tdh
Figure 7. SPI I/F Timing
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
14/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
4. Audio line output
Audio line output
Signal name I/O
Function
Remarks
LDACO
O
Lch audio line output
-
RDACO
O
Rch audio line output
-
This is a line output of decoded music data.
When a sample rate converter is used in on, data on the sample rate 48kHz, 32kHz are changed into 44.1kHz and
outputted.
It turns ON when line output is selected by a command.
Figure 8. shows the relationship between audio outputs and volume steps.
The initial value is –24.1dB at power ON.
Audio output (dB)
0
-10
-20
-30
Initial value: -24.1dB
-40
↓－∞
step
-50
NTRY
-60
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
_
Volume step up
Figure 8. Volume Step Function
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
15/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
5. Equalizers
Selectable audio line output from 5 types of equalizers and 2 types of bus boosts, using commands.
You can use a combination of an equalizer and bus boost 1.
Even when line output is not selected, the equalizer setting is valid. However, for digital output, the equalizer cannot
change the sound quality.
Figure 9. - Figure 14.show frequency characteristics of each filter.
Clipping may occur by the combination of volume and equalizer setting.
POPS
20
15
POPS(0x52, 0x01)
POPS+BassBoost1(0x52, 0x09)
Mag.(dB)
10
5
0
-5
-10
10
100
1000
10000
100000
Freq.(Hz)
Figure 9. POPS Frequency Characteristics
JAZZ
20
15
JAZZ(0x52, 0x02)
JAZZ+BassBoost1(0x52, 0x0A)
Mag.(dB)
10
5
0
-5
-10
10
100
1000
10000
100000
Freq.(Hz)
Figure 10. JAZZ Frequency Characteristics
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
16/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Rock
20
15
ROCK(0x52, 0x03)
ROCK+BassBoost1(0x52, 0x0B)
Mag.(dB)
10
5
0
-5
-10
10
100
1000
10000
100000
Freq.(Hz)
Figure 11. ROCK Frequency Characteristics
Classic
20
15
CLASSIC(0x52, 0x04)
CLASSIC+BassBoost1(0x52, 0x0C)
Mag.(dB)
10
5
0
-5
-10
10
100
1000
10000
100000
Freq.(Hz)
Figure 12. CLASSIC Frequency Characteristics
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
17/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
R&B
20
15
R&B(0x52, 0x05)
R&B+BassBoost1(0x52, 0x0D)
Mag.(dB)
10
5
0
-5
-10
10
100
1000
10000
100000
Freq.(Hz)
Figure 13. R&B
BassBoost
20
15
BassBoost1(0x52, 0x08)
BassBoost2(0x52, 0x0F)
Mag.(dB)
10
5
0
-5
-10
10
100
1000
10000
100000
Freq.(Hz)
Figure 14. Bass Boost
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
18/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
6. MUTE control output
Audio MUTE
Signal name I/O
AMUTE
O
Function
Audio mute control terminal
Remarks
H: At audio output , L: At mute
It outputs H at audio output and L at mute.
When power is ON or in the silence mode such as FF or FB, This control terminal is used to mute audio output
It can be used for the flag to do mute with the amplifier of the rear step and so on.
Figure 15. shows the operation waveforms.
At start of play
At stop of play
AMUTE
23 ms at 0dB
23 ms at 0dB
LDACO, RDACO
Figure 15. Waveform at Audio Mute
2
7. Digital audio output (I S, EIAJ)
The analog audio system line output by the built-in DAC and the change of the digital audio output signal are possible
by a command.
Audio outputs are shown in Table 1. “Audio Output”.
Because TEST terminal is an output terminal, use it as OPEN.
Table 1. Audio Output
DIGTAL output mode
SPDIF OFF
SPDIF ON
PIN
ANALOG output mode
RDACO
Line Out Rch
HiZ
HiZ
LDACO
Line Out Lch
HiZ
HiZ
LRCK
TEST terminal
LR CLOCK
SPDIF
BCK
TEST terminal
BIT CLOCK
TEST terminal
DATA
TEST terminal
LR DATA
TEST terminal
MCLK
TEST terminal
MASTER CLOCK
TEST terminal
2
Digital audio interface (I S, EIAJ)
Signal name I/O
Function
LRCK
O
LR clock output (fs=44.1kHz)
Remarks
-
BCK
O
Bit clock output
-
DATA
O
Data output
-
MCLK
O
Masterxlock output
At fs=32kHz 12.288MHz (384fs)
At fs=44.1kHz 16.9344MHz (384fs)
At fs=48kHz 12.288MHz (256fs)
This is a digital audio output interface terminal.
It becomes enabled by using the appropriate command.
2
When serial audio output is selected, The output format can be selected from the EIAJ format or I S format of 32fs,
48fs or 64fs .
Selectable With the mode that the sample rate of the playback tune is outputted and the mode fixed on 44.1 kHz
by sample rate converter.
Figure 16. - Figure 21. show the output formats.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
19/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
LRCK
Left Channel
Right Channel
BCK(32fs)
DATA
1
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
15
2
Figure 16. I S Output Timing (32fs)
LRCK
Left Channel
Right Channel
BCK(48fs)
DATA
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
15 14
2
Figure 17. I S Output Timing (48fs)
LRCK
Left Channel
Right Channel
BCK(64fs)
DATA
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
15 14 13 12
2
Figure 18. I S Output Timing (64fs)
LRCK
Left Channel
Right Channel
BCK(32fs)
DATA
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
15
14
Figure 19. EIAJ Output Timing (32fs)
LRCK
Left Channel
Right Channel
BCK(48fs)
DATA
1
0
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
Figure 20. EIAJ Output Timing (48fs)
LRCK
Left Channel
Right Channel
BCK(64fs)
DATA
2
1
0
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
Figure 21. EIAJ Output Timing (64fs)
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
20/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
7.1
2
I S, EIAJ Output Timing
2
48fs I S format(Unless specified, Ta=25℃, VDD1=3.3V, Load=20pF)
Rating
Item
Symbol
min
typ
BCK Clock Frequency
Tbck
472.4
BCK Low time
Tbck1
216
BCK High time
Tbck2
LRCK Clock Frequency
Tlrck
LRCK Output delay
DATA Output delay
max
-
Unit
ns
236
-
216
236
-
ns
-
44.1
-
kHz
Tlrck1
-20
0
20
ns
Tda1
-20
0
20
ns
Output High Voltage
Toh
VDD1-0.4
-
-
V
Output Low Voltage
Vol
-
-
0.4
V
LRCK
Remarks
ns
Left Channel
Vol
Tlrck1
Tbck1
Tbck2
Voh
BCK
Vol
Vol
Tda1
DATA
MSB
2
Figure 22. I S, EIAJ Output Timing
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
21/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
8. Digital audio output (SPDIF)
Digital audio interface
Signal Name I/O
Function
SPDIF
O
SPDIF output
Remarks
-
SPDIF output become enabled by setting it using the appropriate command.
Figure 23. shows the digital audio signal output format.
0
Source code
34
1112
Synchronous
preamble
all 0
27 28 29 30 31
Audio data(16bit)
LSB
MSB V
U
C
P
(B pattern)
Synchronous
preamble
(M pattern)
(W pattern)
Source code(4-31)
SPDIF output
0
0
0
0
0
0
0
0
1
0
1
1
0
1
Synchronous
preamble
Figure 23. SPDIF Output Format
One sub frame of SPDIF consists of synchronous preambles, 16-bit audio data, V bit (validity flag), U bit
(user data), C bit (channel status) and P bit (parity bit).
Output rate is fixed to 1X speed.
SPDIF outputs synchronous preambles (source code 0-3) as they are, and other elements (source code
4-31) as the biphase output. While the operation stops, L output is enabled.
Synchronous preambles and C bit use 32 frames (≈4.4 ms) for one cycle. The data formats are shown in
Tables.2 and 3 V bit is fixed to L. U bit uses 98 frames (≈13.3 ms) for one cycle
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
22/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Table 2. Synchronous Preamble Pattern
L0
R0
L1
R1
L2
R2
L3
R3
L4
R4
L5
R5
0
B
W
M
W
M
W
M
W
M
W
M
W
1
M
W
M
W
M
W
M
W
M
W
M
W
：
：
：
：
：
：
：
：
：
：
：
：
：
31
M
W
M
W
M
W
M
W
M
W
M
W
R3
L4
R4
L5
R5
Table 3. C Bit Format
L0
R0
L1
R1
L2
R2
L3
0
0
0
Copy
0
0
0
1
0
0
1
0
0
0
2
0
0
0
Lbit
0
0
3
0
0
0
0
4
0
0
0
0
0
0
5
0
0
0
0
0
0
：
：
：
：
：
：
：
31
0
0
0
0
0
0
1
0
0
1
Table 4. U Bit Format
L0
R0
L1
R1
L2
R2
L3
R3
L4
R4
L5
R5
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
2
1
0
0
0
0
0
0
0
0
0
0
0
3
1
0
0
0
0
0
0
0
0
0
0
0
：
：
：
：
：
：
：
：
：
：
：
：
：
97
1
0
0
0
0
0
0
0
0
0
0
0
P bit is set to 1 if the number of “1” contained in source codes 4-30 is odd, and set to 0 if the number is
even. Therefore, the number of source codes to be set to 1 for one data must be even, SPDIF ends with
L output, and preamble output always starts in the same direction.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
23/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
8.1
SPDIF Output Timing
(Unless specified, Ta=25℃, VDD1=3.3V, Load=20pF)
Rating
Item
Symbol
min
typ
SPDIF Clock Frequency
Tck
2.822
SPDIF Clock High time
Tck1
SPDIF Clock Low time
Output High Voltage
Output Low Voltage
Unit
max
-
MHz
157
177
-
ns
Tck2
157
177
-
ns
Voh
VDD1-0.4
-
-
V
Vol
-
-
0.4
V
Tck
Tck1
Remarks
Tck2
Voh
SPDIF
Vol
Vol
Figure 24. SPDIF Output Timing
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
24/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
2
9. I C command interface
2
Slave I C serial interface
Signal name I/O
Function
2
SCL
I
I C interface clock input
SDA
I/O
Remarks
External pull-up resistor is required.
2
I C interface data I/O
External pull-up resistor is required.
2
This is an I C serial interface terminal to communicate with the microcomputer (master).
2
It supports slave I C operations.
9.1
2
I C protocol
When the I2C bus is in the IDLE state, SDA and SCL are set to H by the external Pull-up resistor.
To start communications, the master sets SDA to L while SCL set to H (Start condition).
To finish communications, the master sets SDA to H while SCL set to H (Stop condition). During transfer, the
2
master changes SDA only while SCL is L. Figure 25. shows Start condition and Stop condition of I C.
SCL
1
SDA
MSB
2
Start
condition
9.2
8
9
LSB
ACK
1
9
ACK
Stop
condition
2
Figure 25. I C Start and Stop Conditions
Slave address
2
I C bus slave addresses support the 7-bit addressing mode.
Figure 26. shows the slave address transfer format.
S
A6
A5
A4
Start
condition
A3
A2
A1
A0
R/W
ACK
sent by
slave
Slave Address
R / W = Read / Write Pulse
ACK = Acknowledge
Figure 26. Slave Address Transfer Format
Table 5. Settable Slave Addresses
MSB
A5
1
9.3
A4
A
6
0
0
A3
A2
A1
LSB
A0
0
0
1
1
Protocol to write from the master
2
When sending commands from the master using the I C bus, be sure to conform to the transfer protocol shown in
Figure 27.
S
Slave Address
R/W
A
Data(8bit)
A
Data(8bit)
A
Data(8bit)
A/A
P
"0"(write)
From Master to Slave
From Slave to Master
A = Acknowledge(SDA low)
A = No Acknowledge(SDA high)
S = Start Condition
P = Stop condition
Figure 27. Command Send Protocol
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
25/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
9.4
Protocol to read to the master
2
When sending the received data from the slave to the master using the I C bus, be sure to conform to the transfer
protocol shown in Figure 28. First, transfer the status read command (step1). Then, input SCL clock of required
bytes in step2 to read the status.
2
If the device status is BUSY when receiving the device status or the data within the memory, the I C bus may be
occupied by the device in BUSY. This LSI transfers the data to the master to avoid such occupation of the bus.
However, as the BUSY status still exists internally, the proper data may not be transferred in BUSY. To cope with
this situation, the first byte of the transfer data (step2) is used to judge whether the transferred data is valid or
invalid. After addressing from the master to the slave, if the 0 bit of the first byte of the transfer data immediately
after requiring the data transfer is 0, the data transferred from the slave is valid. If the 0 bit of the first byte is 1, it
shows the BUSY status. Thus, judge all the transferred data to be invalid. If this happens, retry Step1 to send
commands to read the status.
The first byte of the transferred data (step2) can be readable as the BUSY byte. Please read the status after
sending the status read command (step1). In addition, internal statuses other than BUSY shown in Table 6. can
be read.
The first byte of the transferred data (step2) can be readable as the BUSY byte. Please read the status after
sending the status read command (step1). In addition, internal statuses other than BUSY shown in Table.7 can
be read.
Figure 29. shows the relationship between the transferred data and BUSY.
Table 6. BUSY Byte Structure
bit
STATUS
7
6
5
4
3
2
1
0
0
0
0
PRECOM
IRPTO
SEARCH
MCHNG
BUSY
Step1
S
Slave Address
R/W
A
Data(8bit)
A
A
BUSY(8bit)
A
Data(8bit)
A/A
P
"0"(write)
Step2
S
Slave Address
R/W
Data(8bit)
A
Data(8bit)
A
P
"1"(read)
From Master to Slave
A = Acknowledge(SDA low)
A = No Acknowledge(SDA high)
From Slave to Master
S = Start Condition
P = Stop condition
Figure 28. Status Reception Protocol
I2C
Step1 command
S
Slave Address
BUSY
R
A
BUSY[0]=1
A
Data(8bit)
A
A
0x00
A
Data(8bit)
A
P
BUSY byte
Step1 command
S
Slave Address
R
Data(8bit)
A
Data(8bit)
A
P
BUSY byte for Status
Figure 29. Relationship between Transferred Data and BUSY
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
26/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
9.5
2
I C Bus line timing
2
Table 7. I C Bus line timing
SDA and SCL bus-line characteristic (Unless specified, Ta=25℃, Vcc=3.3V)
Parameter
Code
Min.
1 SDA, SCL H input voltage
VIH
VDD*0.7
2 SDA, SCL L input voltage
VIL
DVSS
3 SDA H output voltage
VOH
VDD-0.4
4 SDA L output voltage
VOL
0
5 SCL clock frequency
fSCL
0
Bus-free-time between "Stop" condition and "Start"
6
tBUF
1.3
condition
Hold time for "Start" condition
7
tHD;STA
0.6
After this, the first clock pulse is generated.
8 LOW status hold-time of SCL clock
tLOW
1.3
9 HIGH status hold-time of SCL clock
tHIGH
0.6
0＊
10 Data-hold-time
tHD;DAT
11 Date-setup-time
tSU;DAT
100
12 Rising time of SDA and SCL signal
tR
20+0.1*Cb
13 Fall time of SDA and SCL signal
tF
20+0.1*Cb
14 Setup time of "Stop" condition
tSU;STO
0.6
－
15 Capacitive load of each bus-line
Cb
Max.
VDD
VDD*0.3
VDD
0.4
400
Unit
V
V
V
V
kHz
－
μS
－
μS
－
－
－
－
300
300
－
400
μS
μS
μS
ns
ns
ns
μS
pF
The above-mentioned numerical values are all the values corresponding to VIH min and VIL max level.
*To exceed an undefined area on falling edged of SCL, transmission device should internally offer the hold-time of
300ns or more for SDA signal (VIH min of SCL signal).
Because the "Repeated Start" condition to send "Start" condition without sending "Stop" condition doesn't correspond,
after sending "Start" condition, always send "Stop" condition.
Neither terminal SCL nor terminal SDA correspond to 5V tolerant.
SDA
tBUF
tF
tLOW
tR
SCL
tHD;STA
P
tHD;DAT
tHIGH
S
tSU;DAT
tSU;STO
P
2
Figure 30. I C Bus line timing chart
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
27/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
10. Interrupt Signals to microprocessor
10.1 BUSY
BUSY status detection output
Signal name
I/O
Function
BUSY
O
BUSY status detection output signal
Remarks
H: Busy, L: Not Busy
This is output to indicate that the LSI is in the BUSY status.
A BUSY signal outputs H until analyzing a command from the master and starting the command operation.
The command input to this LSI in BUSY status is unacceptable.
Connect it to the PIO port of the microcomputer.
10.2 MCHNG
Tune number change detection output
Signal name I/O
Function
Remarks
MCHNG
O
Tune number change detection output signal H: During playing, L: At the end or stop of tune
This signal outputs the information which tells that the file within the memory is being played or the file to be
played is changed.
Precisely, the signal outputs H during the internal decode sequence operation, and L at stop of the operation.
Connect it to the interruption port of the microcomputer.
10.3 SEARCH
SEARCH status detection output
Signal name I/O
Function
SEARCH
O
SEARCH status detection output signal
Remarks
H: SEARCH, L: Not SEARCH
This is output to indicate that the LSI is in the SEARCH status.
A SEARCH signal becomes H at the time of memory mount, file search, TAG analysis and TOC analysis.
This signal is OR of the 2-bit SEARCH status.
The LSI ignores command input during SEARCH. However, it can accept only ABORT, STOP and status read
commands even during SEARCH and can execute them command.
Connect it to the PIO port of the microcomputer.
10.4 IRPTO
Interrupt output to microcomputer
Signal name
I/O
Function
IRPTO
O
Interrupt output to microcomputer
Remarks
H: Interrupt, L: Not Interrupt
This is output to indicate that the LSI is now requiring interruption to the microcomputer.
Change from L to H shows that an interruption has occurred.
When signage is H, it is shown that interrupt occurs.
Connect it to the interruption port of the microcomputer.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
28/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
11. File search
11.1 Function
- The file search function supports file system of FAT32, FAT16 and FAT12. (NTFS is not supported.)
- The number of maximum playable files per folder follows the specification of FAT.
Table 8. Maximum Playable Files per Folder
FAT12
FAT16
FAT32
Root folder
512
512
65535
Sub folder
1024
1024
1024
The number of the maximum files which can playback in throughout the memory is 65535.
The number of the maximum folders which can playback in throughout the memory is 512. (include root folder)
The file or folder beyond the maximum number cannot playback.
Because the pass table of the folder is made to built-in memory beforehand, the search time for next music file is
shortened.
Less than 256 files in the order of FAT within each folder are sorted according to UNICODE. More than 256 files,
if any, will be sorted in the FAT order. The same rule is applied when sorting sub-folders. More than 100
sub-folders, if any, will be sorted in the FAT order. Sorting function can be selected valid or invalid with a
command. The folder hierarchies up to 16 hierarchies whose full path including the file name is within 260
characters can be searched.
11.2 Playable file
The playable file extension is *.WAV for the WAV file, *.M4A, *.3GP and *.MP4 for the AAC file, *.ASF and *.WMA
for the WMA file, and *.MP3, *.MP2 and *.MP1 for the MP3 file. (There is no distinction between upper case
letters and lower case letters.) Note that the file operation differs in the following cases
・Codec selection command: For details, please see
SET_MP3 / SET_WMA / SET_AAC / SET_WAV / SET_MP3_PLAY command specifications.
・Attribute: Files with hidden attributes are also playable. Files with system attributes cannot be played.
・File name: The file name, including its size, does not depend on playability.
・File size: A file with file size "0" is not recognized as a playable file.
11.3 File playing sequence
The file playing sequence depends on the following rules when sort function valid. See Figure 28.
[1] Files of 1 to 256, in the order written to FAT (FAT order) in each folder, are sorted in the order of UNICODE.
Files more than 256 are played in the FAT order. The same rule is applied when sorting sub-folders.
All the folders including null ones and those to which no playable file is written are sorted (selectable setting by
command). If over 256 playable files or sub-folders are contained in the folder, they are played in the order
written to the FAT directory entries.
The writing method of directory entries will not help understand the file play order because the method depends
on the OS operation at writing.
[2] When a playable file exists in the root folder (the top hierarchy), the file is to be played first.
[3] After all the playable files within the root folder have been played, playable files in the folder in the lower
hierarchy, if any, are played.
[4] If another folder exists in the lower hierarchy, playable files within this folder are played. If not, the LSI searches
other folders in the same hierarchy. If another folder exists there, the LSI plays that folder.
[5] After playing all the files (MAX 1024 files), the LSI returns to the root folder as in [2] and play the files starting
with the top sorted one.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
29/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
11.4 Folder/File sort
The LSI sorts the sub-folders and files in the following sequence:
[1] Obtain up to 256 sub-folders and files each in the order written to FAT within selected folder.
[2] Compare the obtained folder/file names for 8 characters (16 bytes) from the beginning in UNICODE (2-byte
character) and sort them in the ascending order. *
[3] If there are files/folders with same character strings: follow the order of MP3, WMA, AAC and WAV when the
extension is different; and, otherwise, follow the order written to FAT.
[4] 101 or more files or sub-folders follow the order written to FAT.
* The processing of the file name and the folder name is shown in the following.
1) When a LFN (long file name) entry exists, 2 bytes are treated as one character.
2) When no LFN entry exists, the SFN(short file name) entry is processed as follows.
2-a) When the first appeared character code is within the range of 0x00-0x7F (US-ASCII), the LSI treats one byte
as one character, and adds '0x00' to the upper of the character to expand the entire character to an
UNICODE.
2-b) For a case other than 2-a), practically, the LSI treats these 2 bytes as one character.
*For details on LFN and SFN, see the FAT file system specifications.
[Root Folder]
A.mp3
B.mp3
C.mp3
A_FOLDER
D_FOLDER
◊
D.mp3
E.mp3
F.mp3
G.mp3
H.mp3
B_FODER
I.mp3
J.mp3
C_FOLDER
K.mp3
L.mp3
M.mp3
N.mp3
O.doc
P.xls
Q.mp3
E_FOLDER
U.mp3
V.mp3
W.mp3
X.mp3
Y.mp3
Z.mp3
R.txt
S.txt
T.txt
Figure 31. Example of Folder/File Structure within the Memory Device
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
30/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Table 9. File Play Sequence for Folder/File Structure in Figure 28.
Playing
sequence
1
File to be
played
A.mp3
2
B.mp3
3
C.mp3
4
5
6
7
8
9
10
11
12
13
14
15
D.mp3
E.mp3
F.mp3
G.mp3
H.mp3
I.mp3
J.mp3
K.mp3
L.mp3
M.mp3
N.mp3
Q.mp3
16
U.mp3
17
V.mp3
18
W.mp3
19
X.mp3
20
Y.mp3
21
Z.mp3
Remarks
-The LSI first starts playing the playable
files in the root folder, if any.
-The files are played in the ascending
order of UNICODE given to each file
name.
-After playing all the playable files in the
root folder, the LSI searches folders in
the lower hierarchy.
-The folders are searched in the
ascending order of UNICODE given to
each folder name.
-Unplayable files are ignored.
-After playing all the playable files (MAX
1024 files) including those in A_FOLDER
and in its lower hierarchy, the LSI moves
to the hierarchy in which A FOLDER
exists and searches files.
-In this case, since no playable file exists
in D FOLDER, which is in the same
hierarchy of A_FOLDER, the LSI plays
the playable files in E FOLDER in the
further lower hierarchy.
11.5 Search within multi-drive and multi-partition
If a device is a multi-drive type or multi partition type, the LSI can recognize the drive by selecting LUN (Logical Unit
Number) for the supporting FAT.
If particular LUN isn’t selected, the LSI mounts the device whose LUN detected first. (default)
It is possible that Test Unit Ready of other LUNs is confirmed during the playback.
11.6 External HUB search
When the USB connector is connected to a HUB, and a FAT-supported drive is connected ahead of the HUB at
mounting the USB for this LSI, only one drive is recognized.
The LSI does not support external HUBs, it cannot detect plugging/unplugging of the drive ahead of the HUB after
the USB is mounted.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
31/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
12. Playing files
12.1 Function
For the files judged to be playable through the file search function, the LSI automatically switches the decoder
using the file extension and decodes these files.
Fast forward play and rewinding play operations are available.
Also, repeat play and random play are available.
12.2 Playable file formats
12.2.1 MP3 file format
This format supports MPEG Audio 1, 2, 2.5 and Layer 1, 2, 3.
It supports sample rates of 8 kHz, 16 kHz, 32 kHz, 11.025 kHz, 22.05 kHz, 44.1 kHz, 12 kHz, 24 kHz and 48kHz.
It supports bit rates of 8 to 320kbps and VBR (Variable Bit Rate).
12.2.2 WMA file format
This format supports WMA Ver.9 Standard.
It supports sample rates of 8 kHz, 16 kHz, 32 kHz, 11.025 kHz , 22.05 kHz, 44.1 kHz and 48 kHz.
It supports bit rates of 5 to 384kbps and VBR (Variable Bit Rate).
It does not support DRM.
It supports ASF files including audio streams only.
12.2.3 AAC file format
This format supports MPEG4 AAC-LC.
It conforms to ITunes and 3GPP TS 26.244.
It supports file types of m4a, mp42 and 3gpX. (X is an arbitrary numeric value.)
ITunes is validated in the following versions: 4.*, 5.*, 6.* and 7.0-7.5.
It supports sample rates of 8 kHz, 16 kHz, 32 kHz, 11.025 kHz, 22.05 kHz, 44.1 kHz, 12 kHz, 24 kHz and 48
kHz.
It supports bit rates of 8 to 320kbps and VBR (Variable Bit Rate).
It does not support DRM.
12.2.4 WAV file format
This format supports RIFF WAVE.
It supports sample rates of 8 kHz, 16 kHz, 32 kHz, 11.025 kHz, 22.05 kHz, 44.1 kHz, 12 kHz, 24 kHz and 48k
Hz.
If you try to play a file created in any format other than above, the LSI immediately terminates decoding it.
12.3 Playing files having damaged data
If the data section of the MP3 file is damaged, the LSI plays the music data in the possible range instead of
ceasing to play the entire file. It mutes the unplayable section. However, AMUTE terminal remains H output.
If the data section of the WAV file is damaged, noises are output.
The LSI executes other files within the playable range and stops playing. Then, it searches to the next tune.
If a part of the data header is damaged, the LSI immediately terminates playing and searches to the next tune.
The movement after the next tune search depends on the setting of the "SET_NEXT_MODE_ON_ERR"
command.
If the file’s extension is playable but its file’s data does not have a format supporting to the extension, the LSI
immediately terminates playing and searches to the next tune.
If the file does not have a file format, the LSI immediately terminates playing and searches to the next tune.
However, when the file data is structured in a format other than MP3 and its file extension is *.MP3, *.MP2 or
*.MP1, the LSI plays it in the silence mode basically. However, if the LSI can read any playable data, it plays the
file partially.
In this case, the time information which is output as the serial status also becomes unstable. The time information
is then partially output but you cannot obtain the correct information.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
32/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
12.4 NEXT playing mode and Repeat playing mode
You can select the operation as shown below depending on the next playing mode, repeat mode and random
mode.
Next playing mode
[1]
PLAY_NEXT:
[2]
PLAY_ALL_STOP:
[3]
PLAY_FOL_STOP:
[4]
PLAY_TUN_STOP:
Repeat mode
Ⅰ：REPEAT_ALL:
Ⅱ：REPEAT_FOL:
Ⅲ：REPEAT_TUN:
Ⅳ：RANDOM_ALL:
Ⅴ：RANDOM_FOL:
Automatically searches the next tune after the tune being played ends and starts
playing the next tune.
After the last tune being played within the memory ends, stops upon completion of
search for the next tune.
Starts playing the next tune by the play command issued subsequently.
After the last tune being played within the folder ends, stops upon completion of
search for the next tune.
Starts playing the next tune by the play command issued subsequently.
After the tune being played ends, stops upon completion of search for the next tune.
Starts playing the next tune by the play command issued subsequently.
After playing all the tunes within the memory in process, starts playing them from the
beginning of the memory.
Repeats playing tunes within the folder in process.
Repeats playing the tune in process. The operation at the time of FF and FB
command reception follows a setup of a SET_REPRAND command.
Playback randomly selected from all tunes in the memory.
Playback randomly selected from the playing folder now.
Select one operation from next play mode and repeat mode respectively to determine the operation.
When repeat mode is REPEAT_FOL, the PLAY_ALL_STOP becomes invalid, and serves as PLAY_NEXT.
When repeat mode is [3][4], the PLAY_ALL_STOP and PLAY_FOL_STOP becomes invalid, and serves as
PLAY_NEXT.
[1] : PLAY_NEXT
[2] : PLAY_ALL_STOP
[3] : PLAY_FOL_STOP
[4] : PLAY_TUN_STOP
Ⅰ：REPEAT_ALL Ⅱ：REPEAT_FOL Ⅲ：REPEAT_TUN Ⅳ：RANDOM_ALL Ⅴ：RANDOM_FOL
○
×
○
○
○
○
×
×
×
×
○
○
×
×
×
○
○
○
○
○
A next music reproduction mode and repeat mode combinatorial effective table
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
33/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
13. Command operations
13.1 Write command
2
The LSI allows command operations from an external microcomputer via a slave I C serial interface.
The command length to be sent varies depending on the command.
Table 9. shows the command specifications.
Table 10. shows enabled/disabled state of each command.
Table 10. Command Operations
Comm
Command
and
Command name
Byte 1st 2nd 3rd 4th
length
CONFIG
0x60 0x00 N 0x00
CHG_SYSTEM
4
_MODE
STOP
2
0x60 0x01
-
-
CHG_DEV
2
0x60 0x03
-
-
DIS_WDT
2
0x60 0x04
-
-
SET_WDT
2
0x60 0x05
-
-
SET_SORT
4
0x60 0x06
N
0x00
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
Explanation of operation
・Set up System Operation Mode.
・Please choose 3rd byte N from the following. The other setup does
not receive a command. Please be sure to perform the changes to
each mode via CONFIG mode. The changes between PLAYER mode
and FILEREAD mode cannot be performed directly
N= 0x00 ; CONFIG Mode
N= 0x01 ; PLAYER Mode
N= 0x02 ; FILE RW Mode
The initial setting is N= 0x00.
・When receiving the STOP command, end the present processing and
shift to the initial state in each system operation mode.
・Playing of a file will be stopped when receiving the STOP command
during Playing, a stop, and file search.
・Playing of a file will be stopped when receiving the STOP command
during fast forward or fast back Playing.
・After stopping playing the file, the LSI restarts playing it from the tune
being stopped. However, if the memory is removed and new one is
inserted before restarting, the LSI returns to the top tune of the
memory.
・This command select device between USB memory and SD memory
card.
To do this, both devices must be connected or one device is provided
against the other (USB memory against SD memory card, and vice
versa). Any other cases will be ignored.
・After the device is selected, the system operation mode remains the
previous mode (before selecting) and goes to the initial state.
・The setting values of the individual commands remain as they are.
However, those of the REPEAT and RANDOM commands return to
the initial values.
・This command disables Watch dog Timer.
・Initial setting is that Watch dog Timer function is effective.
・This command writes “1” to STATUS WDT_RFLG when it is
executed.
・Set up file sorting operation in a memory.
rd
・Select N at the 3 byte from the following. Any setting other than
N=0x00 is considered to specify N=0x01.
N=0x00: Disables sorting of files/folders.
Data is read out in the order that is written to FAT.
N=0x01: Enables sorting of files/folders.
・Initial setting is N= 0x01. A sorting function is effective.
34/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
SET_12MOUT
4
0x60 0x07
N
M
SET_MP3
4
0x60 0x09
N
0x00
SET_LBIT
4
0x60 0x0D
N
0x00
SET_UTPKT
4
0x60 0x0F
N
0x00
GET_DEV_FREE
4
0x60 0x10 0x00 0x00
SET_TOUT_TUR
4
0x60 0x18 0x01
SET_IDL_TIME
8
0x60 0x18 0x02 0x00
SET_USB_R
_WAIT
6
0x60 0x18 0x03 0x00
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
N
・Set up CLKOUT12 terminal and a MCLK terminal output.
rd
・Select N at the 3 byte from the following. Any other settings will not
accept the command.
N=0x00: Disables 12 MHz clock output from the CLKOUT12
terminal.
N=0x01: Enables 12 MHz clock output from the CLKOUT12
terminal.
th
・Select M at the 4 byte from the following. Any other settings will
not accept the command.
M=0x00: Disables 12.288MHz/16.9344 MHz clock output from the
MCLK terminal.
M=0x01: Enables 12.288MHz/16.9344 MHz clock output from the
MCLK terminal.
・The 16.9344 MHz clock is a clock which buffers the input from the
XIN_PLL terminal.
・The 12.288 MHz clock is divided from CLK24MI terminal input.
・initial setting is N= 0x00 and M= 0x00. Output is invalid.
・Select the layer of the MPEG audio to play.
rd
・Select N at the 3 byte from the following. Any setting other than
N=0x00 is considered to specify N=0x01.
N=0x00: Plays all the files having extension mp1, mp2, and mp3.
N=0x01: Plays the files having extension mp3 only.
・Initial setting is N= 0x00. All the files of mp1, mp2, and mp3 are
reproduced.
・Transmission of this command before the transmission of
ENABLE_MEDIADRV and the SET_SD command.
・Set up LBIT and a copy bit when SPDIF output.
rd
・Select N at the 3 byte from the following. Any setting other than
N=0x01 is considered to specify N=0x00.
N=0x00: SPDIF LBIT=1, copy bit = 0 (copy disabled).
N=0x01: SPDIF LBIT=0, copy bit = 1 (copy enabled).
・Initial value is N= 0x00, (ban on a copy).
・Set up a USB terminal output.
rd
・Select N at the 3 byte from the following. Any other setting is
considered to specify N=0x01.
N=0x00: Normally operating terminal
N=0x01: Outputs a test packet from the USB terminal.
・Initial value is N= 0x00.
・Analyze the availability of the media selected now.
・The LSI starts analyzing the free space after receiving the command.
During analysis, SEARCH=0x1 is set. Upon completion of analysis,
SEARCH=0x0 is set.
・After analyzing the free space, you can use the READ_DEV_FREE
command to obtain the current free space.
・The LSI does not monitor the free space automatically. Whenever
changing the system operation mode or the selected media, you
should restart analysis.
・Specify the wait time after the first-time Test Unit Ready command in
USB memory mount operation.
・Setting value [value of SET_TOUT_TUR] x 2 x [value of
SET_RETVAL] becomes the wait time.
・Initial setting is N=0x4 ( 4 x 2 x 375 = 3,000msec).
・Specify N within the range from 0x01 to 0xFF.
・Specify the idle time after USB memory bus reset.
・Specify the setting value to the 5 - 6th byte with a little endian.
・Setting value {6 th=M, 5 th=N} x0.167 (usec) becomes wait time.
・Initial setting is 220usec (setting value =1325= {M=x05, N=x2D}) .
・Specify setting value within the range from300 (50usec) to 9000
(1.5msec)
The wait time after bus reset is set up at the time of USB memory
recognition
・Specify the setting value to the 5 - 6th byte with a little endian.
・Setting value {6 th=M, 5 th=N} x200 (msec) is wait time.
An initial value is 600 msec (N,M=0x0300), and maximum value is
35/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
13107 sec (N,M=0xFFFF).
SET_TOUT_M
4
0x60 0x18 0x04 0x00
・The ACK timeout of the command under memory mount is set up.
th
・The set point x100 (msec) is timeout. At the time, 5 byte is upper
th
byte and 6 byte is lower byte.
th
th
・An initial value is 30 sec (5 byte =0x2C, 6 byte =0x01), and
th
th
maximum value is 60 sec (5 byte =0x58, 6 byte =0x02).If set point is
over the maximum value, this command is ignored.
・Mount ERROR will be carried out if a timeout occur.
SET_TOUT_C
4
0x60 0x18 0x05 0x00
・The ACK timeout of the commands at the time of PLAY or STOP or
PAUSE and sector read under memory mount is set up.
・The set point x100 (msec) is timeout. At the time, 5th byte is upper
byte and 6th byte is lower byte.
・An initial value is 5 sec (5th byte =0x32, 6th byte =0x00), and
maximum value is 60 sec (5th byte =0x58, 6th byte =0x02). If set point
is over the maximum value, this command is ignored.
・Communication ERROR will be carried out if a timeout occur.
SET_USB
_GETDEV_F
6
0x60 0x18 0x06 0x00
・Specify the timeout value for device descriptor acquisition in the head
of USB memory mount operation.
・Specify the setting value to the 5 - 6th byte with a little endian.
・Setting value {6 th=M, 5 th=N} x100 (msec)becomes timeout value.
・Communication ERROR will be carried out if a timeout occur.
・Initial setting is N=100 ( 10sec).
・Specify N within the range from 0x1 to 0xFFFF.
SET_TESTU
_MODE
4
0x60 0x18 0x07
SET_USBCMD
_CAN
8
0x60 0x18 0x08 0x00
・Specify the operation for the first-time Test Unit Ready command in
USB memory mount operation.
・Select N from the following. Any other settings will not accept the
command.
N= 0x00 : Retry is performed according to the setting value of a
SET_RETVAL command.
N= 0x01 : Retry is performed infinitely.
N= 0x02 : Cancels infinite retry of N=0x01 setting.
・Initial setting is N= 0x00 (Retry is performed according to the setting
value of a SET_RETVAL command.)
・Specify the initialization procedure performed in USB memory mount
operation.
・Specify the mask of the initialization procedure with a little endian.
・The following bit values should be used for an initialization procedure
mask.
When a bit is 0, an applicable initialization procedure is performed.
When a bit is 1, an applicable initialization procedure is not performed.
0x0001 : GET_DEVICE_STATUS
0x0002 : CLEAR_FEATURE
0x0004 : SET_ADDRESS
0x0008 : GET_DESCRIPTOR
0x0010 : GET_CONFIG
0x0020 : SET_CONFIG
0x0040 : GET_LUN
0x0080 : CLEAR_PORT_FEATURE
0x0100 : GET_PORT_STATUS
0x0200 : SET_PORT_FEATURE
0x0400 : GET_HUB_DESCRIPTOR
0x0800 : INQUIRY
0x1000 : TEST_UNIT_READY
0x2000 : REQUEST_SENSE
0x4000 : READ_CAPACITY
・Initial setting is0x0000 .
・Please specify 0 to 7th-8th byte.
SET_RETVAL
6or8 0x60 0x18 0x09
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
N
N
・ Specify the retry operation performed in USB memory mount
operation.
・Specify the setting value from the 5th byte with a little endian.
・The length of a setting value changes with values of N.
・Select N from the following. Any other settings will not accept the
command.
N= 0x00: Specify the number of times of execution of sector read at 2
36/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
SET
_RETRYMODE
6
0x60 0x18 0x0A
N
SET_TUR_PASS
4
0x60 0x18 0x0B
N
SET_TESTU
_MODE2
4
0x60 0x18 0x0C
N
SET_TOUT_TUR2
6
0x60 0x18 0x0D 0x00
SET_EMP_DIR
4
0x60 0x1A
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
N
0x00
bytes. Setting value+1 becomes the number of times of execution.
Initial setting is 3. Specify N within the range from 0x0 to 0xFFFF.
N = 0x01: Specify the times of retry for first-time device descriptor
acquisition at 2 bytes. Initial setting is 3. Specify N within the range
from 0x1 to 0xFFFF.
N = 0x02: Specify the number of times of execution of the first-time
Test Unit Ready command at 2 bytes. Initial setting is 375. Specify N
within the range from 0x0 to 0xFFFF.
N = 0x05: Specify the timeout setting in the HUB port scan at 4 bytes.
Initial setting is 30000. Specify N within the range from 0x1 to
0xFFFF_FFFF.
N
= 0x06: Specify the number of times of execution of the
second-time Test Unit Ready command at 2 bytes. Initial setting is 375.
Specify N within the range from 0x0 to 0xFFFF.
・Specify the operation for the each processing in USB memory mount
operation.
・Select 5th byte from the following.
0x00 : Retry is performed according to the preset value or specified
value by command.
0x01 : Retry is performed infinitely.
0x02 : Cancels infinite retry setting (0x01).
・Select N from the following. Any other settings will not accept the
command.
N= 0x01: Specify the operation of sector read.
N= 0x02: Specify the operation of first-time device descriptor
acquisition
N= 0x03: Specify the operation of HUB port scan.
N= 0x04: Specify the operation of the waiting for the ACK response for
other command request.
N= 0x05: Specify the operation of wait after first-time bus reset.
・Specify the operation after Test Unit Ready timeout in USB memory
mount operation.
・Select N from the following. Any other setting is considered to
specify N=0x01.
N=0x00: TestUnitReady timeout is considered as mount failure.
N=0x01: If the number of effective LUN is one, continues mount
operation.
・Initial value is N= 0x00.
・Specify the operation for the second-time Test Unit Ready command
in USB memory mount operation.
・Select N from the following. Any other settings will not accept the
command.
N= 0x00 : Retry is performed according to the setting value of a
SET_RETVAL command.
N= 0x01 : Retry is performed infinitely.
N= 0x02 : Cancels infinite retry of N=0x01 setting.
・Initial setting is N= 0x00 (Retry is performed according to the setting
value of a SET_RETVAL command.)
・Specify the wait time after the second-time Test Unit Ready command
in USB memory mount operation.
・ Setting value [value of SET_TOUT_TUR2] x 2 x [value of
SET_RETVAL] becomes the wait time.
・Specify the setting value to the 5 - 6th byte with a little endian.
・Initial setting is N=0xFF (255 x 2 x 375 =191,250msec).
・Specify N within the range from 0x01 to 0xFFFF
・At the time of the FAT analysis, A number isn't given to folders which
the file which can reproduce is not in through.
rd
・Select N at the 3 byte from the following. Any other setting is
considered to specify N=0x01.
N=0x00 ; A number is assigned in folders as well which the file
which can reproduce is not in through.
N=0x01 ; A number isn’t assigned in folders as well which the file
which can
reproduce is not in through.
・Initial value is N= 0x00.
37/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
SET_NODIFF
4
0x60 0x21 0x00
N
・When folder and file are sorted. It is configured whether it cases
sensitivity of the alphabet.
When it was configured without a distinction. It becomes only
alphabet ("a" - "z" and "A" - "Z") that it is equated.
・In the case of the entry only for short filenames, cannot distinguish
the small and capital letter.
rd
・Select N at the 4 byte from the following. Any other setting is
considered to specify N=0x01.
N=0x00 ; Alphabet doesn't case sensitivity.
N=0x01 ; Alphabet cases sensitivity.
・Initial value is N= 0x00.
SET_IGNORE
12
0x60 0x22 0x00
N
・Specify the character string disregarded at the time of sorting files
and folders.
・The specified character string is compared with the head of the name.
・Specify 4byte ASCII character string to 5-8th byte.
・If the ASCII character is less than 4byte, fill with 0x00 data.
・Select N from the following.
N=0x00 ; Normal sort. Specified character is not disregarded.
N=0x01-0x04 ; Specified character is disregarded. Specify character
length to N.
・Initial value is N= 0x00.(Normal sort)
SET_SRC_OFF
4
0x60 0x23 0x00 0x01
SET_SD
4
0x60 0x24
N
M
AUTO_RECOG
_LUN
4
0x60 0x25
N
0x00
SET_RECOG
_TIM
4
0x60 0x26 0x00
RECOG_LUN
4
0x60 0x27 0x00 0x00
SET_WMA
4
0x60 0x28 0x00 0x00
SET_AAC
4
0x60 0x29 0x00 0x00
SET_LUN
4
0x60 0x31 0x00
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
N
N
・sample rate converter is used in off
・After this command transmission, SRC is turned off.
・Sample rate converter can't be turned on by the command. Turned on
it by the IC reset.
・Specify the use of a serial bus.
・Select N from the following.
N=0x00:No effective-I/F
N=0x01:SD I/F
・Initial setting is N=0x00(No effective-I/F).
・Select M from the following.
M=0x00: Initialization processing is carried out after detecting SD
connection.
M=0x01: Initialization processing is not carried out after detecting SD
connection.
・Initial setting is M=0x00(Initialization processing is carried out).
・When select M=0x01, send SET_SD_INFO command in advance.
・When multiple LUN device is connected, the auto polling of the Test
Unit Ready to each LUN is enabled.
・The result of the polling is saved to LUN_READY status.
Then, LUN_READY_RENEW status notifies the updating.
・Select N from the following. Any other setting is considered to specify
N=0x01.
N=0x00 ; The auto polling of the Test Unit Ready is disabled.
N=0x01 ; The auto polling of the Test Unit Ready is enabled.
・Initial setting is N=0x00(The auto polling of the Test Unit Ready is
disabled).
・Cycles to do the auto polling of AUTO_RECOG_LUN is configured.
・Set value x200 (msec) becomes the cycle of the polling performance.
・Initial value is 1sec.
・Check Test Unit Ready of each LUN , and update LUN_READY
status only once.
・The file of the extension "WMA', "ASF" is removed from the playback
object.
・ The configuration of this command can't do exemption by the
command. Exempt it by the IC reset.
・The file of the extension"MP4', "M4A", "3GP" is removed from the
playback object.
・ The configuration of this command can't do exemption by the
command. Exempt it by the IC reset.
・LUN, which USB memory mounts, is specified.
・LUN specified at the time of USB connection mounts.
・ When another LUN is already mounted, Re-mounts By
38/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
FORCE_DISCON_USB command and FORCE_CON_USB command,
When not specifying LUN, effective LUN becomes an AUTO setup and
LUN detected first is mounted at the time of USB memory connection.
(Initial value)
RESET_LUN
4
0x60 0x32 0x00 0x00
・Effective LUN is set to AUTO and LUN detected first comes to be
mounted at the time of USB memory connection.
FORCE_DISCON
_USB
4
0x60 0x33 0x00 0x00
FORCE_CON
_USB
FORCE_DISCON
_SD
FORCE_CON_SD
4
0x60 0x34 0x00 0x00
・Force USB memory to be disconnected.
・ When play the USB again, re-connect by FORCE_CON_USB
command.
・Mount USB memory again,.
4
0x60 0x36 0x00 0x00
・Force SD card to be disconnected
4
0x60 0x37 0x00 0x00
・Mount SD card again.
SET_SD_TMOUT
8
0x60 0x38 0x01
SET_SD_ABORT
4
0x60 0x38 0x00 0x00
・Specify the timeout value for SD cad mount operation.
・Specify the setting value to the 5 - 8th byte with a little endian.
・Setting value (msec) becomes timeout value.
・If Setting value is 0 , Retry is performed infinitely until it is cancelled
by SET_SD_ABORT command.
・Select N from the following. Any other settings will not accept the
command.
N=0x00: Specify timeout of the whole SD mount operation. Initial
setting is 30000.
N=0x01: Specify timeout of the first-time CMD8 response. Initial setting
is 500.
N=0x02: Specify timeout of the second-time CMD8 response. Initial
setting is 1000.
N=0x03: Specify timeout of the sector reading. Initial setting is 5000.
・Cancels infinite retry of SD mount operation by SET_SD_TMOUT
command.
・SD mount operation is failed.
SET_WAV
4
0x60 0x39 0x00 0x00
・Remove the file of extension "WAV" for reproduction.
・A setup of this command cannot be canceled. Please reset the LSI.
SET_MP3_PLAY
4
0x60 0x3A 0x00 0x00
・ Remove the file of extension "MP3", "MP1", and "MP2" for
reproduction.
・A setup of this command cannot be canceled. Please reset the LSI.
SET_USB_SUBC
4
0x60 0x3B 0x00
・Specifies valid subclass code for USB mount operation.
・Specify the combination of the following bits to M
0x01 :
The subclass 0x01 is valid.
0x02 :
The subclass 0x02 is valid.
0x04 :
The subclass 0x03 is valid.
0x08 :
The subclass 0x04 is valid.
0x10 :
The subclass 0x05 is valid.
0x20 :
The subclass 0x06 is valid.
・Initial setting is M=0x30 (the subclass 0x05 and 0x06 is valid).
ENABLE
_MEDIADRV
4
0x60 0x3C 0x00 0x00
・Enables USB memory/SD card mount operation.
・ USB memory/SD card mount operation is disabled until this
command is received.
・This command is effective after LSI reset only once.
SET_SD_INFO
10
0x60 0x3D
SET_PATCH
_CODE
4
・Specify the inside information of SD driver.
・When you select M= 0x01 (Initialization processing is not carried out)
for SET_SD command, send SET_SD_INFO command in advance.
・Specify 8 bytes data acquired by the READ_SD_STATUS command
to the 3rd - 10th byte.
・Download a patch image packet to this LSI.
・Specify the start offset of the patch image packet to the 5-6th byte
with a little endian.
・Specify the length of the patch image packet to the 7-8th byte with a
little endian.
・Specify the patch image packet after the 9th byte.
・The maximum length of the patch image packet is 502 bytes.
・Specify 2 bytes CRC16 after the patch image packet with a little
N
N
M
N
0x6F 0x03 0x00 0x00
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
39/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
endian.
・ When CRC16 is not right, the command is not accepted and
PRECOM status becomes H.
4
0x6F 0x03 0x01 0x00
・Validate the patch image.
・Specify the CRC16 of the whole patch image to the 5-6th byte with a
little endian.
・Specify the length of the whole patch image to the 7-8th byte with a
little endian.
・When CRC16 or length is not right, the command is not accepted and
PRECOM status becomes H.
PLAY
2
0x61 0x01
-
-
PAUSE
2
0x61 0x02
-
-
・When receiving the PLAY command during stop, the LSI starts
playing the file currently selected.
・When receiving the PLAY command during pause, the LSI starts
playing the file at the paused time.
・When receiving the PLAY command in the CONFIG mode, the LSI
automatically goes to the PLAYER mode and plays the first tune in
the sort order.
・When receiving the PAUSE command during play, the LSI pauses
playing of the file
HOME
4
0x61 0x03
N
0x00
PLAYMODE
4
0x61 0x04
N
0x00
VOL+
4
0x61 0x06 0x01 0x00
VOL-
4
0x61 0x06 0x02 0x00
REPEAT
4
0x61 0x06 0x03 0x00
RANDOM
4
0x61 0x06 0x04 0x00
SET_PATCH_CRC
PLAY control
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
・When receiving the HOME command, the LSI searches files of the
first tune within the memory.
・TAG analysis, if it is enabled, is performed.
・It is not the first tune in the memory at the time of the random setup,
but it is moved for the tune chosen at random.
rd
・Select N at the 3 byte from the following. Any setting other than
N=0x00 is considered to specify N=0x01.
N=0x00: Stops after search is completed.
N=0x01: Starts playing after search is completed.
・When receiving the PLAYMODE command, the LSI changes play
rd
mode in accordance with the setting of N in the 3 byte.
・During play, the play mode is immediately changed. During stop, this
command cannot start playing the file.
rd
・Select N at the 3 byte from the following. Any other settings will not
accept the command.
N=0x00: Changes to normal play.
N=0x01: Changes to fast forward.
N=0x02: Changes to rewind.
・Initial setting is N= 0x00. It is normal Playing.
・When receiving the VOL+ command, the LSI controls the sound
volume step by incrementing by 1.
・ The sound volume is controlled in 32 steps from -∞ (minimum
volume) to 0 dB (maximum volume).
・When receiving the VOL- command, the LSI controls the volume step
by decrementing by 1.
・ The sound volume is controlled in 32 steps from -∞ (minimum
volume) to 0 dB (maximum volume).
・This command changes the mode for repeat.
・REPEAT command toggles as: memory repeat ->1 music repeat ->
folder repeat.
・The repeat reproduction mode is initialized by "all songs repeat in the
memory" by accepting "REPEAT" command when the random in the
folder is set by "SET_REPRAND" command.
・For the settings of the REPEAT, RANDOM, and SET_REPRAND
commands, the one finally set becomes enabled.
・Initial setting is the all-songs repeat in a memory.
・This command changes the mode for random play.
・If random play is enabled, the LSI plays the currently-played file at
random in the area of ±128 files in the sort order.
・The RANDOM command toggles as: Normal play→Repeat all the
tunes within the memory.
40/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
FF
4
0x61 0x07
M
N
FB
4
0x61 0x08
M
N
FOL+
4
0x61 0x09
M
N
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
・The repeat reproduction mode is initialized by "all songs repeat in the
memory" by accepting "RANDOM" command when the random in the
folder is set by "SET_REPRAND" command.
・For the settings of the REPEAT, RANDOM and SET_REPRAND
commands, the one finally set becomes enabled.
・When receiving the FF command during play, pause, or stop, the LSI
searches the file N tunes ahead from the file being played or paused
in the sort order.
・If the number of remaining files is less than N in the sort order, the
LSI searches back to the first file.
・If N=0, the LSI searches the current file.
・If REPEAT or RANDOM is set, the LSI searches the next file in
accordance with the setting. However, if “Repeats one tune” is set,
the LSI searches the next file in accordance with the SET_REPRAND
command setting.
・If TAG analysis is enabled, the LSI also performs that analysis.
・After searching, the LSI operates in accordance with the setting in the
rd
3 byte.
rd
Select M at the 3 byte from the following. Any setting other than
M=0x00 is considered to specify M=0x01.
M=0x00: Stops after search is completed.
M=0x01: Starts playing after search is completed.
・The number of tunes to be searched depends on the setting of N in
the 4th byte.
・When receiving the FB command during play, pause, or stop, the LSI
searches the file, N tunes back from the file being played, paused or
stopped, in the sort order.
・When the LSI play is playing a tune in less than N files from the top in
the sort order, it searches the first tune. However, only when the file
to be searched is the first tune within the memory in the “repeat within
the memory” setting, the LSI searches the file across the last tune
within the memory to the first one. If the file to be searched is the
first file within the folder in the “repeat within the folder” setting, the
LSI searches the file within the same folder.
・If N=0, the LSI searches the top of the current file. However if it
receives the FB command with N=0 when the play time is within 1
second, the LSI searches the top of the previous tune.
・If REPEAT or RANDOM is set, the LSI searches files in accordance
with the setting. However, if “Repeats one tune” is set, the LSI
searches the next file in accordance with the SET_REPRAND
command setting.
・If TAG analysis is enabled, the LSI also performs that analysis.
・After searching, the LSI operates in accordance with the setting in the
rd
rd
3 byte. Select M at the 3 byte from the following. Any setting
other than M=0x00 is considered to specify M=0x01.
M=0x00: Stops after search is completed.
M=0x01: Starts playing after search is completed.
・The number of tunes to be searched depends on the setting of N in
the 4th byte.
・When receiving the FOL+ command during play, pause, or stop, the
LSI searches the folder N tunes ahead from the one having the file
being played, paused or stopped in the sort order.
・If the remaining folders are less than N in the sort order, the LSI
returns to the first folder.
・Even if REPEAT or RANDOM is set, the LSI searches the file in the
status where repeat mode is set.
・Search the file chosen at random when RANDOM is set.
・If N=0, the LSI searches the top of the current folder.
・If TAG analysis is enabled, the LSI also performs that analysis.
・After searching, the LSI operates in accordance with the setting in the
rd
rd
3 byte. Select M at the 3 byte from the following. Any setting
other than M=0x00 is considered to specify M=0x01.
M=0x00: Stops after search is completed.
M=0x01: Starts playing after search is completed.
・The number of tunes to be searched depends on the setting of N in
the 4th byte.
41/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
0x61 0x0A
M
N
・When receiving the FOL- command during play, pause, or stop, the
LSI searches the folder N tunes back from the one having the file
being played or paused in the sort order.
・When playing a tune less than N folders from the top in the sort order,
the LSI returns to the first folder. However, when playing a file within
the first folder, the LSI searches the folder across the last tune within
the memory.
・Even if REPEAT or RANDOM is set, the LSI searches the file in the
status where repeat mode is set.
・Search the file chosen at random when RANDOM is set.
・If N=0, the LSI searches the top of the current folder.
・If TAG analysis is enabled, the LSI also performs that analysis.
・After searching, the LSI operates in accordance with the setting in the
rd
rd
3 byte. Select M at the 3 byte from the following. Any setting
other than M=0x00 is considered to specify M=0x01.
M=0x00: Stops after search is completed.
M=0x01: Starts playing after search is completed.
・The number of folders to be searched depends on the setting of N in
the 4th byte.
・This command sets 42-byte data obtained by the
th
th
READ_RESUME_INFO command to 5 -46 bytes.
・Set the data in ascending order of the offsets obtained by the
READ_RESUME_INFO command.
・Movement after the command write depends on the setting of N in the
4th byte.
rd
・Select N at the 4 byte from the following. Any other setting is
considered to specify N=0x01.
N=0x00 ; Playback is started in the time when
「READ_RESUME_INFO」command was forwarded.
N=0x01 ; Stop (Pause) in the time when 「READ_RESUME_INFO」
command was forwarded.
N=0x02 ; Playback is started from the front of the tune when
「READ_RESUME_INFO」command was forwarded.
N=0x03 ; Stop (Pause) the front of the tune when
「READ_RESUME_INFO」command was forwarded.
・If the resume target cannot be searched, the LSI searches the first
tune of in the device and plays or stop (Pause).
FOL-
4
PLAY_RESUME
46
0x61 0x0B 0x00
N
SET_DOUT
4
0x61 0x10 0x00
N
・This command sets audio output.
th
・Select N at the 4 byte from the following. Any other settings will not
accept the command.
N=0x00: Outputs via audio line.
N=0x01: Outputs using the digital audio interface (SPDIF).
2
N=0x02: Outputs in I S(32fs) format.
2
N=0x03: Outputs in I S(48fs) format.
2
N=0x04: Outputs in I S(64fs) format.
N=0x05: Outputs in EIAJ(32fs) format.
N=0x06: Outputs in EIAJ (48fs) format.
N=0x07: Outputs in EIAJ (64fs) format.
・By default, N=0x00: "audio line output" is set.
SET_EQ
4
0x61 0x10 0x01
N
・This command sets the equalizer.
th
・Set N at the 4 byte from the following.
accept the command.
N=0x00: EQ OFF
N=0x01: POPS
N=0x02: JAZZ
N=0x03: ROCK
N=0x04: CLASSIC
N=0x05: R&B
N=0x07: EQ OFF
N=0x08: BASS BOOST1
N=0x09: POPS + BASS BOOST1
N=0x0A: JAZZ + BASS BOOST1
N=0x0B: ROCK + BASS BOOST1
N=0x0C: CLASSIC + BASS BOOST1
PLAY Setting
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
42/66
Any other settings will not
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
N=0x0D: R&B + BASS BOOST1
N=0x0F: BASS BOOST2
・By default, N=0x00: EQ OFF is set.
th
SET_VOL
4
0x61 0x10 0x02
N
・This command sets the sound volume with the value of N at the 4
byte in 32 steps from 0x00 to 0x1F.
・Setting range outside 0x00 to 0x1F will not accept the command.
・By default, N=0x06 is set.
SET_NEXT
4
0x61 0x10 0x03
N
SET_REPRAND
4
0x61 0x10 0x04
N
・This command sets next tune play mode.
th
・Select N at the 4 byte from the following. Any settings other than
N=0x04 will not accept the command.
N=0x00: PLAY_NEXT:
After the tune being played is completed, the LSI automatically
searches the next tune and starts playing it.
N=0x01: PLAY_ALL_STOP:
After the last tune within the memory being played is completed,
the LSI reaches the next tune and stops.
When the play command is issued again, the LSI starts playing
the next tune.
N=0x02: PLAY_FOL_STOP:
After the last tune within the folder being played is completed, the
LSI searches the next tune and stops.
When the play command is issued again, the LSI starts playing
the next tune.
N=0x03: PLAY_TUN_STOP:
After the tune being played is completed, the LSI searches the
next tune and stops.
When the play command is issued again, the LSI starts playing
the next tune.
・By default, N=0x00 is set.
・If the repeat mode is set to “repeat within folder”, operation setting
N=0x01 will become disabled. The LSI searches the next tune and
then starts playing it.
・If the repeat mode is set to “repeat one tune”, operation settings
N=0x01 and 0x02 will become disabled. The LSI searches the next
tune and then starts playing it.
・If the repeat mode is set to “random within memory” or “random within
folder”, the operation settings N=0x01 and 0x02 will become disabled.
The LSI searches the next tune and then starts playing it.
・This command sets repeat mode.
th
・Select N at the 4 byte from the following. Any other settings will not
accept the command.
N=0x00: REPEAT_ALL: Repeats within the memory
Repeats all the tunes within the memory being played.
N=0x01: REPEAT_FOL: Repeats within the folder
Repeats the tunes within the folder being played.
N=0x02: REPEAT_TUN: Repeats one tune
Repeats the tune being played.
A setup of the repeat in the memory is followed when FF and FB
command.
N=0x03: REPEAT_TUN: Repeats one tune
Repeats the tune being played.
A setup of the repeat in the memory is followed when FF and FB
command.
N=0x04: RANDOM_ALL: Random within the memory
Plays tunes at random starting from the one being played, in a range
128 tunes
ahead and back of the tune.
N=0x05: RANDOM_FOL: Random within the folder
Plays tunes at random within the folder starting from the one being
played,
in a range 128 tunes ahead and back of the tune.
・By default, N=0x00 is set.
・For the settings of the REPEAT, RANDOM and SET_REPRAND
commands, the one finally set becomes enabled.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
43/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
SET_TAG
4
0x61 0x10 0x05
N
・This command sets TAG analysis mode.
th
・Select N at the 4 byte from the following. Any settings other than
N=0x00 will be considered to specify N=0x01.
N=0x00: Does not perform TAG analysis.
N=0x01: Performs TAG analysis.
・TAG analysis is performed immediately before the LSI starts playing
a tune, and started from the file to be searched after the setting is
enabled.
・After TAG analysis is completed, the LSI writes the result to the
status register.
・By default, N=0x01: "Performs TAG analysis" is set.
SET_PRM
8
0x61 0x10 0x07
L
SET_NEXT_MOD
E_ON_ERR
4
0x61 0x10 0x08
N
SET_SEARCH_LI
MIT_FILE
8
0x61 0x10 0x09
N
SET_SEARCH_LI
MIT_FOLDER
8
0x61 0x10 0x0A
N
・This command sets play time (M) and skip time (N) for fast forward
and rewind.
・Play time is a period of time to make sound. Skip time is a period of
time to skip during search.
・For fast forward and rewind, a cycle of {play time (M) + skip time (N)
+ error (O)} is repeated.
The error is determined by the difference between the minimum
decode unit
and the rounding error between the play time and the real time
requiring to
search the skip time. The error varies depending on the file and
memory
structure.
・Play time is set to M[15:0]= [6th byte, 5th byte], and skip time to
N[15:0]= [8th byte, 7th byte].
The unit is msec. By default, play time is 300ms=M[15:0]= [6th
th
byte=x01,5
byte=x2C], and skip time is 2100ms=N[15:0]= [8th byte=x08,7th
byte=x34].
Specifying 0x0 sets the default.
Set play time to 300ms or more, and skip time to (play time×16) or
less.
When it is moved by the fast rewind play in the front to the tune,
the regenerated time of the first period may become shorter than
setup time.
th
・0xL in the 4 byte sets the attenuation level during fast forward and
rewind. The allowable level is -6dB X[4th byte].
Allowable setting range is from 0x00 to 0x10.
By default, 0x02=-12dB is set. Setting of 0x10 is equivalent to
MUTE.
・Set movement at the time of the decode error outbreak.
th
・Select N at the 4 byte from the following. Any settings other than
N=0x00 will be considered to specify N=0x01.
N=0x00 ; DECERR_NEXT_STOP
After next music search completion after the decode error detection,
have "be awaiting a play start".
N=0x01 ; DECERR_NEXT_PLAY
After next music search completion after the decode error detection,
play start the next music.
By default, N=0x00 is set.
・Set the number of the find playable files upper limits in throughout the
memory.
th
・Select N at the 4 byte from the following. Any settings other than
following will be not considered.
N=0x00 ; Set them for a USB device
N=0x01 ; Set them for a SD device
・Specify the find playable files upper limits to the 5-8th byte with a little
endian.
The settable value is 1~65535.
・When the file detection total number in the memory beyond the set
value, do not search a further files.
An initial value is 65535.
・Set the number of the find folder upper limits in throughout the
memory.
th
・Select N at the 4 byte from the following. Any settings other than
following will be not considered.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
44/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
SET_SEARCH_LI
MIT_FILE_IN_FOL
DER
8
0x61 0x10 0x0B
N
N=0x00 ; Set them for a USB device
N=0x01 ; Set them for a SD device
・Specify the folders upper limits to the 5-8th byte with a little endian.
The settable value is 1~512.
・When the folder detection total number in the memory beyond the set
value, do not search a further folders.
An initial value is 512.
・Depend on the setting of the "SET_EMP_DIR" command whether
count the folder which there is not a playable file.
・Set the number of the find playable files upper limits in each subfolder
memory.
th
・Select N at the 4 byte from the following. Any settings other than
following will be not considered.
N=0x00 ; Set them for a USB device
N=0x01 ; Set them for a SD device
・Specify the find playable files upper limits to the 5-8th byte with a little
endian.
The settable value is 1~1024.
・When the file detection total number in the subfolder beyond the set
value, do not search a further files.
An initial value is 1024.
・The number of the find playable file upper limits in the root folder is
fixed with 65535.
FILE READ
FOPEN_R
260 0x63 0x01 0x00 0x00
FCLOSE
4
0x63 0x03 0x00 0x00
FREAD_DAT
6
0x63 0x06
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
N
N
・This command specifies the full path and name of the file to be read
from the memory using the File Read function.
・If a file exists after receiving the command, open the specified file.
・The full path is 256 bytes at maximum (including drive letter (A:\), file
th
th
name and extension). Set this at the 5 -260 bytes.
If the length is less than 256 bytes, insert 0x00 at the end.
Insert ”\”(0x5C) for the delimiter between folder layers.
・The drive letter is "A:\" for USB and "B:\" for SD.
・You can also specify the path in a format without drive letter. In this
case, the length is 253 bytes at maximum.
・If the full path has a drive letter different from the one for the memory
being selected, an error occurs. (For example, "B:\" is set for the full
path when USB is selected.)
・This command closes the file.
・After the File Read function is completed, CLOSE the file.
・This command specifies the position of data to be read from the file at
File Read.
rd
th
・Specify the data position to be read in the 3 to 6 bytes in Little
Endian format.
2
・When using the I C bus, send this command and then check that the
FRDREADY bit turns 1. Then, send the READ_FR_DATA
command. Data of up to 256 bytes can be read at one time.
45/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Command
Table 10. Command enable/disable in each system operation mode
Command enable/disable in each
Command enable/disable in each status
system operation mode
SEARCH SEARCH
CONFIG
PLAYER FILE READ STOP
PLAY
Analyze Write
(mode)
(file)
CONFIG
CHG_SYSTEM_MODE
○
○
○
○
○
×
×
×
○
STOP
○
○
○
○
○
○
○
○
○
CHG_DEV
○
○
○
○
○
×
×
×
○
DIS_WDT
○
○
○
○
×
×
×
×
×
SET_WDT
○
○
○
○
×
×
×
×
○
SET_SORT
○
×
×
○
○
×
×
×
×
SET_12MOUT
○
○
○
○
×
×
×
×
○
SET_MP3
○
×
×
○
×
×
×
×
×
SET_LBIT
○
○
○
○
×
×
×
×
○
SET_UTPKT
○
×
×
○
×
×
×
×
×
GET_DEV_FREE
○
○
○
○
×
×
×
×
×
SET_TOUT_TUR
○
×
×
○
×
×
×
×
×
SET_IDL_TIME
○
×
×
○
×
×
×
×
×
SET_USB_R_WAIT
○
○
○
○
○
×
×
×
○
SET_TOUT_M
○
○
○
○
○
×
×
×
○
SET_TOUT_C
○
○
○
○
○
×
×
×
○
SET_USB_GETDEV_F
○
○
○
○
×
×
×
×
×
SET_TESTU_MODE
○
○
○
○
×
×
×
×
×
SET_USBCMD_CAN
○
○
○
○
×
×
×
×
×
SET_RETVAL
○
○
○
○
×
×
×
×
×
SET_RETRYMODE
○
○
○
○
×
×
×
×
×
SET_TESTU_PASS
○
○
○
○
×
×
×
×
×
SET_TESTU_MODE2
○
○
○
○
×
×
×
×
×
SET_TOUT_TUR2
○
×
×
○
×
×
×
×
×
SET_EMP_DIR
○
×
×
○
×
×
×
×
×
SET_NODIFF
○
○
○
○
○
○
○
○
○
SET_IGNORE
○
×
×
○
○
○
○
○
○
SET_SRC_OFF
○
○
○
○
○
○
○
○
○
SET_SD
○
○
○
○
○
○
○
○
○
AUTO_RECOG_LUN
○
○
○
○
○
○
○
○
○
SET_RECOG_TIM
○
○
○
○
○
○
○
○
○
RECOG_LUN
○
○
○
○
○
○
○
○
○
SET_WMA
○
×
×
○
×
×
×
×
×
SET_AAC
○
×
×
○
×
×
×
×
×
SET_LUN
○
○
○
○
○
×
×
×
○
RESET_LUN
○
○
○
○
○
×
×
×
○
FORCE_DISCON_USB
○
○
○
○
○
×
×
×
○
FORCE_CON_USB
○
○
○
○
○
×
×
×
○
FORCE_DISCON_SD
○
○
○
○
○
×
×
×
○
FORCE_CON_SD
○
○
○
○
○
×
×
×
○
SET_SD_TMOUT
○
○
○
○
×
×
×
×
×
SET_SD_ABORT
○
○
○
○
×
×
×
×
×
SET_WAV
○
×
×
○
×
×
×
×
×
SET_MP3_PLAY
○
×
×
○
×
×
×
×
×
ENABLE_MEDIADRV
○
×
×
×
×
×
×
×
×
SET_SD_INFO
○
×
×
○
×
×
×
×
×
SET_PATCH_CODE
○
×
×
○
×
×
×
×
×
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
46/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
○
×
×
○
×
×
×
×
×
PLAY
○
○
×
○
○
×
×
×
×
PAUSE
×
○
×
○
○
×
×
×
×
HOME
×
○
×
○
○
×
×
×
×
PLAYMODE
×
○
×
○
○
×
×
×
×
VOL+
○
○
○
○
○
×
×
×
○
VOL-
○
○
○
○
○
×
×
×
○
REPEAT
×
○
×
○
○
×
×
×
×
RANDOM
×
○
×
○
○
×
×
×
×
FF
×
○
×
○
○
×
×
×
×
FB
×
○
×
○
○
×
×
×
×
FOL+
×
○
×
○
○
×
×
×
×
FOL-
×
○
×
○
○
×
×
×
×
PLAY_RESUME
×
○
×
○
○
×
×
×
×
SET_DOUT
○
○
○
○
○
×
×
×
○
SET_EQ
○
○
○
○
○
×
×
×
○
SET_VOL
○
○
○
○
○
×
×
×
○
SET_NEXT
×
○
×
○
○
×
×
×
×
SET_REPRAND
×
○
×
○
○
×
×
×
×
SET_TAG
×
○
×
○
○
×
×
×
×
SET_PRM
×
○
×
○
○
×
×
×
×
×
○
×
○
○
×
×
×
×
○
×
×
○
○
×
×
×
×
○
×
×
○
○
×
×
×
×
○
×
×
○
○
×
×
×
×
FOPEN_R
×
×
○
○
×
×
×
×
×
FCLOSE
×
×
○
○
×
×
×
×
×
×
×
○
○
×
×
×
×
×
SET_PATH_CRC
PLAY control
PLAY Setting
SET_NEXT_MODE_ON
_ERR
SET_SEARCH_LIMIT_F
ILE
SET_SEARCH_LIMIT_F
OLDER
SET_SEARCH_LIMIT_F
ILE_IN_FOLDER
FILE READ
FREAD_DAT
○=enable
×=disable
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
47/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
13.2 Status output
2
The operation information, such as internal statuses, play time, folders, files and Tags, is output using an I C interface.
The statuses shown in Table 11. Status Register Map is output.
2
When reading status via I C, the OFFSET position is automatically incremented after reading byte data. However, by
2
issuing the I C start condition, the OFFSET position is reset to OFFSET specified by the previous command.
To read statuses, two methods are available: to specify OFFSET of the status register map and read any bytes
continuously from the OFFSET position; and to read byte data by a command without specifying the OFFSET position.
Table 12. shows the status output commands. Table 13 shows the effective state of the status output command.
2
Byte data, when reading via I C, is output in Little Endian format.
When read over OFFSET=0x140, OFFSET does not return to 0x00, therefore the read value turns into an unfixed
value.
Table 11. Status Register Map
bit7
(MSB)
ERROR
IRPTO
USBINS
1
0
OFFSET
Status
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0C
0x0D
0x0E
0x0F
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x18
0x19
0x1A
0x1B
0x1C
0x1D
0x1E
0x1F
0x20
0x21
0x23
0x24
0x25
0x26
0x2B
0x2C
0x2D
STATUS1
STATUS2
STATUS3
STATUS4
STATUS5
STATUS6
VOLINF
DOUTINF
PMODEINF
SEL_MP3
PSEC
PMINL
PMINH
TSEC
TMINL
TMINH
LANGL
LANGH
PFOLNL
PFOLNH
PFILENFLL
PFILENFLH
PFILENFHL
PFILENFHH
PFILENMLL
PFILENMLH
PFILENMHL
PFILENMHH
TFOLMEML
TFOLMEMH
TFILEMEMLL
TFILEMEMLH
TFILEMEMHL
TFILEMEMHH
NUMANAFOLLL
NUMANAFOLLH
NUMANAFOLHL
NUMANAFOLHH
TFILEANAFOLL
L
TFILEANAFOLL
H
TFILEANAFOLH
L
TFILEANAFOLH
H
TFOLANAFOLL
TFOLANAFOLH
TFOLANAHEIRL
0x2E
SORTOPTION
0x2F
FIOSTAT
FIOERR
0x30
0x35
FIOSET
LUN_READY
0
0x27
0x28
0x29
0x2A
0
0
bit6
bit5
bit4
bit3
bit2
bit1
bit0
(LSB)
PLAY
DEC_ERR
PDEVSD
SEARCH
BUSY
MCHNG
STOP
PAUSE
0
STOP_INFO
0
PRECOM RES_ERR
SDINS
USBFILE
SDFILE
MDEVUSB MDEVSD PDEVUSB
TINFUSB
TINFSD
SET_TAG ANA_TAG
TAGINFO
SET_SD
FBP
FFP
PLAYFILE
PRECOMSTAT
0
0
VOLINF
EQINF
DOUTINF
REPEATINF
SETNEXTINF
SET_SRC SET_AAC SET_WMA WDT_RFLG 12MOUT SET_SORT SET_MP3
PSECH
PSECL
PMINLH
PMINLL
PMIHH
PMINHL
TSECH
TSECL
TMINLH
TMINLL
TMINHH
TMINHL
LANGL
LANGH
PFOLNL
PFOLNH
PFILENLL
PFILENLH
PFILENHL
PFILENHH
PFILENLL
PFILENLH
PFILENHL
PFILENHH
TFOLMEML
TFOLMEMH
TFILEMEMLL
TFILEMEMLH
TFILEMEMHL
TFILEMEMHH
NUMANAFOLLL
NUMANAFOLLH
NUMANAFOLHL
NUMANAFOLHH
TFILEANAFOLLL
TFILEANAFOLLH
TFILEANAFOLHL
TFILEANAFOLHH
TFOLANAFOLL
TFOLANAFOLH
TFOLANAFOLL
SET_NODI
SET
SET_EMP
FF
_IGNORE
_DIR
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
0
0
LUN_READY_L
0
0
0
FIOOPEN FRDREADY
0
0
48/66
0
0
0
0
0
0
FIOSEARC
FIOMODE
H
FIOOPE
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
0x36
_L
LUN_READY
_H
LUN_READY_H
0x37
MEMINFO
MEMINFO
0x38 0x13F
COMAREA
COMAREA
OFFSET
0x00
0x01
0x02
0x03
Status
STATUS1
STATUS2
STATUS3
STATUS4
0x04
STATUS5
0x05
STATUS6
0x06
VOLINF
bit
7
NAME
ERROR
6:5
SEARCH
4
3
BUSY
MCHNG
2
1
0
7
6
5:4
STOP
PAUSE
PLAY
IRPTO
0
STOP_INFO
3
2
0
PRECOM
1
0
7
RES_ERR
DEC_ERR
USBINS
6
SDINS
5
4
3
2
1
USBFILE
SDFILE
MDEVUSB
MDEVSD
PDEVUSB
0
PDEVSD
7
6
1
TINFUSB
5
TINFSD
4
3
2:0
SET_TAG
ANA_TAG
TAGINFO
7
6
5
4
0
SET_SD
FBP
FFP
3:0
PLAYFILE
7:0 PRECOMSTA
T
7:5
4:0
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
0
VOLINF
LUN
_BUSY
LUN_READ
Y_RENEW
reseve
reseve
Contents
ERROR situation
0 ; Nothing error, 1 ; Error
* ERROR=0 in Config mode.
SEARCH situation
bit6:device recognition 0: Search stop
1: Under a search
bit5:file search 0: Search stop
1: Under a search
BUSY situation
0: non-BUSY , 1:BUSY
Music change detection 0: Under a music end / stop, 1: Stop after
search/ Playing.
STOP state
0: not stopped, 1: Under a stop
PAUSE state
0: not stopped, 1: Under a stop
Playing state
0: not reproducing, 1: Under Playing
IRPTO interruption state
0: Nothing interruption, 1;interruption
0
Stop state detailed information
0: It is except during the stop/stop after device mount, 1: Stop pulled
[ music ] out the head, 2: Error stop, 3: Stop by SET_NEXT
Command setting
0
The last command situation 0;Normal receptionist, 1;Abnormalities
(un-receiving)
Resume error
0: With no error, 1: Error
Decoding error
0: With no error, 1: Error
USB connection detection 0:USB un-connecting, 1:USB connection
detection
SD connection detection
0:SD un-connecting, 1:SD connection
detection
Playable file existence in a USB memory 0;Nothing, 1;existence
Playable file existence in a SD memory 0;Nothing, 1;existence
USB memory recognition situation 0: Un-recognizing, 1: Recognition
SD memory recognition situation
0: Un-recognizing, 1: Recognition
USB memory situation
0: Under a stop, 1: Under Playing/TAG
analysis
SD memory situation
0: Under a stop, 1: Under Playing/TAG
analysis
1
Acquisition of total file/folder number in a USB memory.
0: Un-acquiring, 1: Finishing acquisition
Acquisition of total file/folder number in a SD memory.
0: Un-acquiring, 1: Finishing acquisition
TAG analysis setup
0:TAG analysis OFF, 1:TAG analysis ON
TAG analysis situation 0;TAG analysis stop, 1;Under TAG analysis
Existence TAG kind
0:ID 3V1, 1:ID 3V2, 2;With WMA, 3;AAC, 4:WAV, and 7: no TAG
information
0
SD I/F effective 0:OFF , 1:ON
Fast back Playing situation 0: normal Playing, 1:fast-back Playing
Fast forward Playing situation 0: normal Playing, 1:fast-forward
Playing
Playing file information
1:MP3, 2:WMA, 3:AAC, 4:WAV
The last command receptionist situation detailed information; The last
command outputs whether it received normally.
A state is held to the following command. A state is not cleared by the
lead command.
The 0th bit is the same as that of PRECOM status. They are the
contents at the time of abnormalities except it.
0
Volume setting information. The value set up by SET_VOL [4:0] is
outputted.
49/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
0x07
0x08
DOUTINF
PMODEINF
7:4
EQINF
3:0
DOUTINF
7:4
REPEATINF
3:0 SETNEXTINF
0x09
SEL_MP3
0
7
6
5
4
3
2
1
SET_SRC
SET_AAC
SET_WMA
WDT_RFLG
12MOUT
SET_SORT
0
SET_MP3
PSECH
PSECL
PMINLH
PMINLL
PMINHH
PMINHL
TSECH
TSECL
TMINLH
TMINLL
TMINHH
TMINHL
LANGL
LANGH
PFOLNL
7:0
PFILENLL
7:0
PFILENLH
7:0
PFILENHL
7:0
PFILENHH
7:0 TFOLMEML
7:0 TFOLMEMH
7:0 TFILEMEMLL
7:0 TFILEMEMLH
The number of total files in memory. [15:0] higher-rank [15:8]
7:0 TFILEMEMHL
The number of total files in memory. [31:16] low-rank byte [23:16]
7:0 TFILEMEMHH
The number of total files in memory. [31:16] higher-rank byte [31:24]
PSEC
0x0B
PMINL
0x0C
PMINH
0x0D
TSEC
0x0E
TMINL
0x0F
TMINH
0x10
0x11
0x12
LANGL
LANGH
PFOLNL
7:4
3:0
7:4
3:0
7:4
3:0
7:4
3:0
7:4
3:0
7:4
3:0
7:0
7:0
7:0
0x13
0x14
PFOLNH
PFILENFLL
7:0
7:0
PFOLNH
PFILENLL
0x15
0x16
0x17
PFILENFLH 7:0
PFILENFHL 7:0
PFILENFHH 7:0
PFILENLH
PFILENHL
PFILENHH
0x18
0x19
0x1A
0x1B
0x1C
0x1D
0x1E
PFILENMLL
PFILENMLH
PFILENMHL
PFILENMHH
TFOLMEML
TFOLMEMH
TFILEMEML
L
TFILEMEML
H
TFILEMEMH
L
TFILEMEMH
H
SORTOPTIO
N
0x20
0x21
0x2E
7
SET_NODIFF
6
5
0x2F
FIOSTAT
0
SRC effective 0:ON , 1:OFF
AAC file playback configuration
0:AAC play , 1:AAC not play
WMA file playback configuration
0:WMA play, 1:WMA not play
Monitor register for WDT
0:after RESET
12MHz clock output
0:OFF, 1:ON
file sorting functional setup 0;SORT function OFF, 1;SORT function
effective
MP3 file Playing setup
0;Extensions mp1 and mp2, mp3 Playing, 1;Reproduce only extension
mp3.
Playing time second information
[7:4] x 10 seconds
Playing time second information
[3:0] x 1 second
Playing time minutes information
[7:4] x 10 minutes
Playing time minutes information
[3:0] x 1 minute
Playing time minutes information
[7:4] x 1000 minutes
Playing time minutes information
[3:0] x 100 minutes
1 track time second information
[7:4] x 10 seconds
1 track time second information
[3:0] x 1 second
1 track time minutes information
[7:4] x 10 minutes
1 track time minutes information
[3:0] x 1 minute
1 track time minutes information
[7:4] x 1000 minutes
1 track time minutes information
[3:0] x 100 minutes
TAG character code information lower byte [7:0]
TAG character code information higher byte [15:8]
Playing folder number in memory. Lower byte [7:0]
ROOT becomes No.1. A number is shaken in order of sorting.
Playing folder number in memory. Higher rank byte [15:8]
Playing file number in the present folder. [15:0], lower byte [7:0], a
number is shaken from No.1 in order of sorting.
Playing file number in the present folder. [15:0], Higher rank byte [15:8]
Playing file number in the present folder. [31:16], Low rank byte [23:16]
Playing file number in the present folder. [31:16], Higher rank byte
[31:24]
Playing file number in the memory. [15:0] Low rank byte [7:0]
Playing file number in the memory. [15:0] Higher rank byte [15:8]
Playing file number in the memory. [31:16] Low rank byte [23:16]
Playing file number in the memory. [31:16] Higher rank byte [31:24]
The number of total folders in a memory. low rank byte [7:0]
The number of total folders in a memory. higher rank byte [15:8]
The number of total files in memory. [15:0] low-rank byte [7:0]
0x0A
0x1F
EQ setting information. The value set up by SET_EQ [3:0] is
outputted.
Audio output setting information. The value set up by SET_DOUT [3:0]
is outputted.
REPEAT MODE setting information. The value set up by
SET_REPRAND [3:0] is outputted.
PLAY NEXT MODE setting information. The value set up by
SET_NEXT [3:0] is outputted.
SET_IGNORE
SET_EMP_DI
R
0
1：4
7
FIOERR
6
0
5
0
4
FIOOPEN
3
FRDREADY
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
Cases sensitivity of the alphabet
0: Cases sensitivity , 1: Not cases
sensitivity
Set characters is ignored
0:Not ignored , 1:ignored
A number isn't given to empty folders
0: number given , 1:number
not given
0
FILE IO Error situation
0: With no Error, 1:Error
0
0
FILE OPEN state
0: Un-open 1;during file open
Read-out FIFO preparation situation
0:Under preparation,
1:Preparation O.K.
50/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
0x30
0x31
0x32
0x37
FIOSET
2
1
0
0
FIOSEARCH
FIOMODE
7:6
5:4
3:0
0
0
FIOOPE
LUN_READ 7:0 LUN_READY_
Y_L
L
LUN_READ 7:0 LUN_READY_
Y_H
H
MEMINFO 7:4
MEMINFO
3
LUN_BUSY
2
0x38
0x13F
COMAREA
LUN_READY_
RENEW
1
reserve
0
reserve
7:0
COMAREA
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
0
FILE IO processing situation 0:Processing stop, 1:Under processing
FILE IO mode effective/invalid 0;invalid 1; effective
0
0
The contents situation of FILE IO processing
0;With no processing , 1;OPEN, 2;Read, 3;Write, 4;Close, 5;Delete
The condition of Test Unit Ready of each LUN [7:0] 0: NG , 1: OK
The condition of Test Unit Ready of each LUN [15:8]
0: NG , 1: OK
Memory device information chosen now
Test Unit Ready condition identification flag 0:not identification , 1:
identification
The change of state flag of Test Unit Ready 0:Changed , 1:Not
changed(It is cleared by 0 by a READ_LUN_READY command read.
Data common area The contents change with status read-out
commands.
(When read-out exceeding OFFSET=0x140 is performed, OFFSET
does not return to 0x00, but the value read becomes unfixed)
51/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Table 12. Status Output Commands
Com
mand
Command name
Command
Byte
1st 2nd 3rd
length
The number
of output
bytes
STATUS
4th
M
Arbitrary
・Output the arbitrary number data of bytes from the
OFFSET position where the status register map was
specified.
th
・OFFSET is 3rd and 4 byte. It is specified as a byte by
Little Endian (M, N= 0x00, 0x00 to 0x01, 0xFF).
・Output about internal status.
・Output about OFFSET 0x00-0x05 of a status buffer.
READ_BUFF
4
0x6 0x00
C
READ_STATUS
4
0x6 0x00 0x00 0x00
D
6
READ_PSET
4
0x6 0x00 0x01 0x00
D
4
・Output about setting information.
・Output about OFFSET 0x06-0x09 of a status buffer.
READ_PTIME
4
0x6 0x00 0x02 0x00
D
6
・Output about Playing time information.
・Output about OFFSET 0x0A-0x0F of a status buffer.
READ_LANG
4
0x6 0x00 0x02 0x01
D
2
・Output about TAG character code information.
・Output about OFFSET 0x10-0x11 of a status buffer.
READ_PNUM
4
0x6 0x00 0x02 0x02
D
10
READ_TNUM
4
0x6 0x00 0x02 0x03
D
6
・Output about the number under Playing.
・Output about OFFSET 0x12-0x1B of a status buffer.
・An exact value of the number of total files and folders
in memory
cannot be acquired when music is specified by cursor
and access
data, such as a PLAY_CURSOR command.
・Output about the file in a memory, and the number of
folders.
・Output about OFFSET 0x1C-0x21 of a status buffer.
READ_FNUM
4
0x6 0x00 0x02 0x04
D
4
READ_PFILE
_NAME
4
0x6 0x00 0x03
D
READ_PFOL
_NAME
4
0x6 0x00 0x04 0x00
D
130
READ_PFILE
_TAG
4
0x6 0x00 0x05
D
130
READ_RESUME
_INFO
4
0x6 0x00 0x06 0x00
D
42
READ_DEV
_FREE
4
0x6 0x00 0x07
D
8
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
N
Status
N
N
N
130
・Output the number of files which is in a folder during
the present Playing.
・Output the file name of the file of the +Nth file during
the present Playing.
Specify N from 0x00 to 0x03. N=0x00 is the present file.
Output is enabled only when the Nth file is within the
same folder where the one being played resides. If the
Nth file is in a different folder, “0” is output
・Output data has the proposed data ID (2 bytes). See
16. File Name, Folder Name, TAG Information for the
output format.
・Output the folder name of the file being played.
・Output data has the proposed data ID (2 bytes). See
6.4.6 for the output format.
・Outputs the data which is written to TAG of the file
being played.
th
･Specify TAG type with 0xN at the 4 bytes. Select N at
th
the 4 byte from the following. Any other settings will
not accept the command.
N=0x00: TITLE ,
N=0x01: ARTIST ,
N=0x02: ALBUM , N=0x03: GENRE
・Output data has the preposed data ID (2 bytes). See
16. File Name, Folder Name, TAG Information for the
output format.
・Outputs the data required to execute resume play.
・The data is output in Little Endian format.
・See 6.4.5 for the output format.
・Outputs the free space analysis results of the file
analyzed by the GET_DEV_FREE command.
th
・Specify the space type to be output with N at the 4
th
byte. Select N at the 4 byte from the following.
Any other settings will be considered to specify
N=0x01.
52/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
N=0x00: Outputs the free space of the selected media
by the byte.
N=0x01: Outputs the TOTAL space of the selected
media by the byte.
・If the GET_DEV_FREE command has not been sent,
this command outputs “0”.
READ_DEVDESC
4
0x6 0x00 0x08 0x00
D
18
・ Output a Device Descriptor value when the USB
memory is inserted and chosen.
・Vendor ID and Product ID are the following offset.
0x08：Vendor ID Lower byte
0x09：Vendor ID Upper byte
0x0A：Product ID Lower byte
0x0B：Product ID Upper byte
READ_CONDESC
4
0x6 0x00 0x08 0x01
D
32
READ_INQIRY
4
0x6 0x00 0x08 0x02
D
32
・Output a Configuration Descriptor value when the USB
memory has been recognized.
・32 bytes from the head of top Configuration Descriptor
is outputted.
・Output a MSC Inquiry value when the USB memory
has been recognized.
・Vender identification (ASCII) and Product identification
(ASCII) are the following offset.
0x08-0x0F Vender identification(ASCII)
0x10-0x1F Product identification(ASCII)
READ_LUN
4
0x00 0x08 0x03
1
READ_LUN_NUM
4
0x00 0x08 0x04
1
READ_SET_LUN
4
0x00 0x08 0x05
1
READ_LUN
_READY
4
0x6
D
0x6
D
0x6
D
0x6
D
0x00 0x0A 0x00
2
READ_STOP
_PROGRESS
4
0x6 0x00 0x0C 0x00
D
4
READ_FR_STATU
S
4
0x6 0x03 0x00 0x00
D
2
・Output about a file read functional status.
・Output about OFFSET 0 x2F-0x30 of a status buffer.
READ_FR_SIZE
4
0x6 0x03 0x01 0x00
D
4
・Output the file size of the file specified by the file read
function.
・A unit is a byte. It outputs by Little Endian.
READ_FR_DATA
4
0x6 0x03 0x02 0x00
D
260
・Reads the data of the file specified by the File Read
function.
・Up to 256 bytes of data can be read at one time.
・The leading 4 bytes are file offset. They are output in
Little Endian format.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
·In case of AUTO detection mode of LUN, LUN of
mounted USB memory can be read.
·Read the total of LUN of the USB memory which is
connected now.
·Read LUN specified by the "SET_LUN" command.
In not setting up, 0xFF is read.
・ The consequence of Test Unit Ready of each
confirmed LUN by 「 AUTO_RECOG_LUN 」
or
「RECOG_LUN」is read out.
・When Test Unit Ready is OK, output 1.
・When Test Unit Ready is NG, output 0.
・It is outputted about OFFSET 0x31-0x32 of the status
buffer.
・LUN_READY_RENEW flag is cleared by the read of
this command.
・Output the state of reproduction stop processing.
・When you send command accompanied by
reproduction operation after STOP command ,check
the completion of stop processing with this command
in advance.
・1st byte outputs the state of stop processing.
1st byte=0x00: stop processing is completed. The
command accompanied by reproduction operation can
be executed.
1st byte=other than 0x00: stop processing or
reproduction processing is running .
・2nd-4th byte outputs other internal processing state.
53/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
0x6 0x0A 0x00 0x00
D
0x6 0x0A 0x01 0x00
D
1
・Output about the present system operation mode.
4
4
0x6 0x0A 0x02 0x00
D
1
・Output about the contents of the present error.
・An internal error code original with this LSI is
outputted.
・Output about the present memory information.
・Output about OFFSET 0x37 of a status buffer.
READ_MOUNT
_ERROR
4
0x6 0x0A 0x04 0x00
D
14
READ_SD
_STATUS
4
0x6 0x0C 0x00 0x00
D
8
READ_FW_VER
4
0x6 0xFF 0x00 0x00
D
4
READ_SYSMODE
4
READ_ERROR
4
READ_MEMINFO
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
・Output the information on which stage of media mount
went wrong when ERROR occurs.
・1st byte: USB enumeration state is outputted.
・2nd byte: SD initialization state is outputted.
・10th byte: file system analysis state is outputted.
・Other bytes should be disregarded.
・See "12.4.15 Process information when a media
mount error " for details of content
・Output the inside information of SD driver.
・The contents are original with this LSI.
・Please use it by a SET_SD_INFO command.
・Output about a firmware version.
54/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Table 13. Command enable/disable in each system operation mode
Command enable/disable in
Command enable/disable in each status
each system operation mode
FILE
SEARCH SEARCH
CONFIG PLAYER
STOP
PLAY
Analyze
READ
(device) (FILE)
Command
Write
READ_BUFF
○
○
○
○
○
○
○
○
○
READ_STATUS
○
○
○
○
○
○
○
○
○
READ_PSET
○
○
○
○
○
○
○
○
○
READ_PTIME
○
○
○
○
○
×
×
×
×
READ_LANG
○
○
○
○
○
×
×
×
×
READ_PNUM
○
○
○
○
○
×
×
×
×
READ_TNUM
○
○
○
○
○
×
×
×
×
READ_FNUM
×
○
×
○
○
×
×
×
×
READ_PFILE_NAME
×
○
×
○
○
×
×
×
×
READ_PFOL_NAME
×
○
×
○
○
×
×
×
×
READ_PFILE_TAG
×
○
×
○
○
×
×
×
×
READ_RESUME_INFO
×
○
×
○
○
×
×
×
×
READ_DEV_FREE
READ_DEVDESC
○
○
○
○
×
×
×
×
×
○
○
○
○
×
×
×
×
×
READ_CONDESC
○
○
○
○
×
×
×
×
×
READ_INQIRY
○
○
○
○
×
×
×
×
×
READ_LUN
×
○
○
○
○
×
×
×
○
READ_LUN_NUM
×
○
○
○
○
×
×
×
○
READ_SET_LUN
×
○
○
○
○
×
×
×
○
READ_LUN_READY
READ_STOP
_PROGRESS
○
○
○
○
○
○
○
○
○
×
○
×
○
○
○
○
○
○
READ_FR_STATUS
○
○
○
○
○
○
○
○
○
READ_FR_SIZE
×
×
○
○
×
×
×
×
×
READ_FR_DATA
×
×
○
○
×
×
×
×
×
READ_SYSMODE
○
○
○
○
○
○
○
○
○
READ_ERROR
○
○
○
○
○
○
○
○
○
READ_MEMINFO
○
○
○
○
○
○
○
○
○
READ_MOUNT_ERROR
○
○
○
○
○
○
○
○
○
READ_SD_STATUS
○
○
○
○
○
○
○
○
○
READ_FW_VER
○
○
○
○
○
○
○
○
○
○=enable
×=disable
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
55/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
14. System Operation MODE
The LSI starts operation by setting up System Operation MODE after download of the program by IPL after a power
supply and reset release.
Possible operation changes with each modes of operation.
Only the one mode can set up mode of operation with a command.
The mode which is simultaneously different cannot be set up.
A microcomputer sets up the change in System Operation MODE with a command.
Please be sure to perform the changes to each mode via CONFIG mode.
The changes between PLAYER mode and FILEREAD mode cannot be performed directly.
The settlement of the following command is to do a re-setup because it is returned in the initial value when it passes
through the CONFIG mode.
REPEAT, RANDOM, SET_EQ, SET_NEXT, SET_REPRAND, SET_TAG, SET_PRM
Command
CHG_SYSTEM_MODE
N=0x00 ; CONFIG MODE
It is in the state which changes after a power supply
It is the mode which performs initial setting of a system.
Please change to the mode of other operation after setting up with an initial-setting command.
In this mode, even if it detects insertion of a memory, mount of a memory is not performed.
The mount of a memory carried out behind each mode changes.
N=0x01 ; PLAYER MODE
It is the mode which performs decoding play of the file in a memory.
N=0x02 ; FILE Read MODE
It is the mode which Reading can perform about the specific file in a memory.
A specific file can be deleted.
15. Resume information
This LSI outputs the information for resume function, using READ_RESUME_INFO command.
Table 14. Resume information register structure
Status
OFFSET
0x38-0x61
The
number of
bytes
NAME
42
Resume information
data
Contents
This data shows the information on the file being played and on
the play position.
The data has a LSI-unique structure.
The resume information data is data of 42 bytes.
It outputs with a little endian.
The above resume information has a LSI-unique structure and is used when executing resume play. Therefore, you
should use the data contents as they are without rewriting.
The resume function is implemented by writing the resume information read by READ_RESUME_INFO command to
PLAY_RESUME command. After writing to PLAY_RESUME, the LSI automatically searches the resume. As for the
action of the searches end, selectable from [Playback is started in the time when 「READ_RESUME_INFO」command
was forwarded], [top (Pause) in the time when 「READ_RESUME_INFO」command was forwarded], [Playback is
started from the front of the tune when 「READ_RESUME_INFO」command was forwarded], [Stop (Pause) the front
of the tune when 「READ_RESUME_INFO」command was forwarded].
After reading READ_RESUME_INFO command during file play, the LSI resumes the file from the time
READ_RESUME_INFO has been read.
The data contents read by READ_RESUME_INFO command cannot assure the operations when executing
PLAY_RESUME which has been rewritten due to the positional information within the memory. If the resume
information does not match because of change of memory, the LSI starts searches front file of memory.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
56/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
16. File Name, Folder Name, TAG Information
A file name, a folder name, and TAG information are outputted to a status register.
The first 2 bytes to be output indicate file data ID information.
The target data is outputted from the 3rd byte.
A file name, a folder name, and TAG information status register structure are shown in Table 15.
Table 15.File (folder, TAG) information registers structure
Status
OFFSET
The
number of
bytes
NAME
0x38
1
Data type
0x39
1
Encoding
0x3A-0xB9
128
File name
(Folder name, TAG)
Contents
The type of data is outputted.
0x00; TEXT- NUL (0x00) Terminated character string
0x01; BYTE- Unsigned 1 byte integer
Encoding of a character string is outputted.
0x00 ; ISO8859-1(Latin1)
0x01 : UTF-16(with BOM)
0x02 : UTF-16BE
0x03 : UTF-8
0x49 : UTF-16LE
When a data type is except 0x00:TEXT, data length (byte unit) is
outputted.
A file name (or a folder name, TAG) is outputted by left fitting.
Up to 128 bytes can be output.
If the data is less than 128 bytes, it terminates with 0x00.
The character code information on TAG information is outputted to a status register.
Character code information status register structure is shown in Table 16.
Table 16. Character code information registers structure
LANGH
OFFSET=0x11
0x00
0x00
0x00
0x00
0x00
LANGL
OFFSET=0x10
Language Code
0x00
0x01
0x02
0x03
0x49
ID3V1 TAG or ISO8859-1(ID3V2 TAG)
UTF-16 (ID3V2 TAG)
UTF-16BE (ID3V2 TAG
UTF-8 (ID3V2 TAG or AAC TAG iTunes Meta-data)
UTF-16LE (WMA TAG)
17. File data read
It is possible to read the contents of the specified file in a memory.
File name is specified by the full path (within 256 bytes) including a file name and an extension.
A full path including a file name and an extension supports to 16 classes within 256 bytes.
The above-operation can be performed when system operation mode is FILE Read mode.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
57/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
18. IRPTO Interruption Terminal to Microcomputer
When some status changes, this LSI notifies interruption to master microcomputer by IRPTO terminal.
When signal is H, it is shown that interrupt occurs.
Please connect IRPTO terminal to the interruption port of level detection.
Following table shows IRPTO signal output condition for each system mode.
State
Interruption
Contents
PLAYER MODE
MEMINFO = 0x3
An interrupt occurs when status register MEMINFO=0x03
(OFFSET=0x37, [7:4] ).See 6.4.14. Selected memory information for
content.
Clear conditions; interruption is cleared by memory disconnection.
FILE READ MODE
FRDREADY
An interrupt occurs when a specified file is searched and read-out is
ready.
Clear conditions; interruption is cleared by data are read (block unit).
19. Previous Command Processing Situation
The previous command processing situation is outputted as status register STATUS6 (OFFSET=0x05) PRECOMSTAT.
Bit0 of STATUS6(OFFSET=0x05) and Bit2 of STATUS2 (OFFSET=0x01) is the same value. When Bit2 of STATUS2
set to "0", the previous command is normally processed. When Bit2 of STATUS2 set to "1", the previous command is
not processed.
The following shows the value descriptions.
Value
0x01
0x03
0x05
0x07
0x09
0x0B
0x0F
0x15
NAME
UNCLASSIFIED
UNKNOWN CMD
SEARCH
INVALID ARG
WRONG MODE
NOT READY
NOT IMPLEMENTED
DEVICE ERROR
Cause of being unprocessed
Non classification error
Undefined command
Searching now
Invalid parameter is detected.
Invalid command in the current system operation mode
Initialization is not completed.
The function is not mounted.
Device error
20. Selected memory information
The kind and information on a device which are chosen now are outputted by a READ_MEMINFO command.
An output value is cleared at the memory disconnection or CHG_DEV command reception, and is updated at the
completion of mount operation.
The details of an output value are shown below.
Value[7:4]
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x8-0xF
Contents
Mounted USB device (playable device)
NO-Mounted USB device (file system un-support, etc.)
USB LOW SPEED device
USB device with two or more DEVICE CONFIGRATION
The USB device and SD device which cannot be recognized
(USB enumeration failure etc.)
MEMINFO is undecided.
SD Card
It means that there is HUB, when Bit7 is H.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
58/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
21. Process information when a media mount error
When media mount failure occurs, READ_MOUNT_ERROR command output the information on the stage of media
mount operation.
After being set to ERROR=1, the detailed information about in which process the error occurred can be read with this
command.
For example, when ERROR=1 and 1st byte=0x08 or 0x09, it turns out that mount error is caused by device response
error for TEST UNIT READY or REQUEST SENSE.
The details of an output value are shown below.
1st byte (offset=0) of a read value outputs the process state of USB mount operation.
A read value corresponds to the processing which went wrong.
A read value is cleared at the start of a USB mount operation.
A read value is updated irrespective of the success or failure of mount operation at the completion of mount operation.
Read value
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0C
0x0D
0x0E
0x0F
Process state
Before a start of operation
DEVICE_DISCRIPTOR acquisition
SET_ADDRESS
CONFIG_DESCRIPTOR acquisition
End Point connect
SET_CONFIGRATION
GET MAX LUN
CLEAR_FEATURE
INQUIRY
TEST UNIT READY
REQUEST SENSE
READ_CAPACITY
CLEAR_PORT_FEATURE
GET_PORT_STATUS
SET_PORT_FEATURE
HUB_DESCRIPTOR acquisition
Read value
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x18
0x19
-
Process state
GET_DEVSTATUS
Sector read command send
Sector read command receive
Sector read status receive
Not-supported Device Subclass
Only HUB is connected
LOW DEVICE is detected
-
2nd byte (offset=1) of a read value outputs the process state of SD initialization.
bit corresponding to the succeeded process is set to 1.
A read value is cleared at the start of a SD mount operation.
A read value is updated one by one during mount, irrespective of the success or failure of mount operation.
Update is stopped at the completion of mount operation
A read value is 0x00 before a start of operation.
bit
0
1
2
3
4
5
Process state
CMD0 response
CMD8 response
CMD55 response
CMD41 response
CMD58 response
CMD1 response
10th byte (offset=9) of a read value outputs the process state of FAT file system analysis.
A read value corresponds to the processing which went wrong.
A read value is updated one by one during mount, irrespective of the success or failure of mount operation.
Update is stopped at the completion of mount operation
Read value
0x00
0x01
0x02
0x03
0x04
Process state
Before a start of operation
MBR read
MBR analysis
BPB analysis
FAT table check
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
59/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
22. Patch Code Download
For play ability improvement to peculiar USB memory and SD card, This LSI supports to download a patch cord from a
master microcomputer.
2
In Config mode, a patch is downloadable from a master microcomputer via I C.
The whole patch image size sent into BU94502Cxxx must be smaller than 8440 Bytes.
Please divide a patch image into packets within 504 bytes, send by SET_PATCH_CODE command.
After downloading all patch image packets , validate the patch image by SET_PATCH_CRC command.
・ Generator polynomial uses CRC-CITT (X^16 + X^12+X^ 5+1).
・ Initial value is 0xFFFF.
・ Output XOR is 0x0000.
・ A bit feed is the right feed.
Whole patch image
This LSI
patch image packet #1
CRC#1
SET_PATCH_CODE
save to instruction ram
patch image packet #2
CRC#2
SET_PATCH_CODE
save to instruction ram
patch image packet #3
CRC#3
SET_PATCH_CODE
save to instruction ram
・
・
・
・
・
・
patch image packet #n
CRC#n
CRC of Whole
patch image
・
・
・
SET_PATCH_CODE
save to instruction ram
SET_PATCH_CODE
Check whole CRC,
validate patch image
Figure 32. Concept of Patch Code Download
23. Watch Dog Timer
The LSI incorporates Watch Dog Timer, which monitors the system hang-up and resets whenever it occurs.
After resetting hang-up. Can disable WDT using DIS_WDT command. Once WDT is disabled, it cannot be enabled until
reset is input.
When WDT, in the valid status, detects a hang-up within the LSI regardless of external situations (on the microcomputer),
the LSI resets the system internally.
To monitor whether the LSI is reset by WDT from the master microcomputer (external), use SET_WDT command to write
H to STATUS WDT_RFLG and monitor this status. After reset, this status is read as L. This helps you judge that WDT
has reset the LSI by reading out L when reading the status regularly after writing H using SET_WDT command.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
60/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Notes for use
(1)Power on Reset
Please keep the terminal RESETX at the Low level when the power supply starts. Please make the terminal RESETX High
level after 100us after 3.3V system power supply and the oscillation of the system clock is steady. Moreover, please make
the terminal RESETX Low level during 100us or more when resetting it while operating.
(2) About compatibility in USB memory device and SD memory card
According to the file structure and communication speed of an USB memory, SD memory card, this LSI might not play back
correctly.
(3) About turning on the power supply
Current rush might flow momentarily by the order of turning on the power supply and the delay in IC with two or more power
supplies, and note the capacity of the power supply coupling, the power supply, and width and drawing the GND pattern
wiring.
(4) About absolute maximum rating
When the absolute maximum rating such as the applied voltage and the ranges of the operating temperature
is exceeded, LSI might be destroyed. Please apply neither voltage nor the temperature that exceeds the
absolute maximum rating. Please execute physical measures for safety such as fuse when it is thought to
exceed the absolute maximum rating, and examine it so that the condition to exceed the absolute maximum
rating is not applied to LSI.
(5) About GND Voltage
In any state of operation must be the lowest voltage about the voltage of the terminal GND. Please actually confirm the
voltage of each terminal is not a voltage that is lower than the terminal GND including excessive phenomenon.
(6) About design of overheating malfunction preventive circuit
Please design overheating malfunction preventive circuit with an enough margin in consideration of a permissible loss in the
state of using actually.
Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) in actual operating conditions.
VQFN040V6060 package(BU94502CMUV)exposes its frame of the backside of package. Note that this part is assumed to
use after providing heat dissipation treatment to improve heat dissipation efficiency. Try to occupy as wide as possible with
heat dissipation pattern not only on the board surface but also the backside.
(7) About the short between terminals and the mounting by mistake
Please note the direction and the gap of position of LSI enough about LSI when you mount on the substrate.
LSI might be destroyed when mounting by mistake and energizing. Moreover, LSI might be destroyed when short-circuited
by entering of the foreign substances between the terminal and GND, between terminals, between the terminal and the
power supply of LSI.
(8) About operation in strong electromagnetic field
Use in strong electromagnetic field has the possibility of malfunctioning and evaluate it enough, please.
(9) Playing time of MP3 file
The playing time when it can be acquired at the time of playing the MP3 file, may shift when fast forward playing, rewinding
playing, and VBR playing.
(10) About WMA
Windows Media Audio is the music compression technology which Microsoft Corp. developed.
Windows Media is the registered trademark of U.S. Microsoft Corporation in the U.S., and other countries.
2
(11) About I C format I/F
2
Although this LSI has adopted the I C format, the level shifter circuit is not built in.
For this reason, level shifter is needed for connection with the device besides the range of operating power supply voltage
of this LSI.
Status of this document
The Japanese version of this document is the formal specification. A customer may use this translation version only for a
reference.
to help reading the formal version. If there are any differences in translation version of this document, formal version takes
priority.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
61/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Information about ordering part number
B
U
9
4
5
Part Number
BU94502C
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
0
2
C
x
x
x
-
Package
MUV: VQFN040V6060
KS2: SQFP-T52
62/66
x x
Packaging and forming specification
E2: Reel-formed emboss taping
None: Tray, Tube
VQFN040V6060 is provided in reel-formed
emboss taping
SQFP-T52 is provided in a tray.
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Physical Dimension, Tape and Reel Information
Package Name
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
VQFN040V6060
63/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Physical Dimension, Tape and Reel Information
Package Name
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
SQFP-T52
64/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Mark name image
VQFN040V6060 (TOP VIEW)
Part Number Marking
BU94502
SQFP-T52 (TOP VIEW)
LOT Number
Part Number Marking
LOT Number
U94502CKS2
CMUV
1PIN MARK
Part number
1PIN MARK
Part Number Marking
Ordering part number
BU94502CMUV
BU94502
CMUV
BU94502CMUV-E2
BU94502CKS2
U94502CKS2
BU94502CKS2
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
65/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
BU94502Cxxx series
Revision history
Date
Revision
05.Jan.2016
001
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
Changes
Newly created.
66/66
TSZ02201-0V1V0E600170-1-2
2016.01.05 Rev.001
Datasheet
Notice
Precaution on using ROHM Products
1.
Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment,
OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you
(Note 1)
, transport
intend to use our Products in devices requiring extremely high reliability (such as medical equipment
equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car
accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or
serious damage to property (“Specific Applications”), please consult with the ROHM sales representative in advance.
Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any
damages, expenses or losses incurred by you or third parties arising from the use of any ROHM’s Products for Specific
Applications.
(Note1) Medical Equipment Classification of the Specific Applications
JAPAN
USA
EU
CHINA
CLASSⅢ
CLASSⅡb
CLASSⅢ
CLASSⅢ
CLASSⅣ
CLASSⅢ
2.
ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor
products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate
safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which
a failure or malfunction of our Products may cause. The following are examples of safety measures:
[a] Installation of protection circuits or other protective devices to improve system safety
[b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure
3.
Our Products are designed and manufactured for use under standard conditions and not under any special or
extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way
responsible or liable for any damages, expenses or losses arising from the use of any ROHM’s Products under any
special or extraordinary environments or conditions. If you intend to use our Products under any special or
extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of
product performance, reliability, etc, prior to use, must be necessary:
[a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents
[b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust
[c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2,
H2S, NH3, SO2, and NO2
[d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves
[e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items
[f] Sealing or coating our Products with resin or other coating materials
[g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of
flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning
residue after soldering
[h] Use of the Products in places subject to dew condensation
4.
The Products are not subject to radiation-proof design.
5.
Please verify and confirm characteristics of the final or mounted products in using the Products.
6.
In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied,
confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power
exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect
product performance and reliability.
7.
De-rate Power Dissipation depending on ambient temperature. When used in sealed area, confirm that it is the use in
the range that does not exceed the maximum junction temperature.
8.
Confirm that operation temperature is within the specified range described in the product specification.
9.
ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in
this document.
Precaution for Mounting / Circuit board design
1.
When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product
performance and reliability.
2.
In principle, the reflow soldering method must be used on a surface-mount products, the flow soldering method must
be used on a through hole mount products. If the flow soldering method is preferred on a surface-mount products,
please consult with the ROHM representative in advance.
For details, please refer to ROHM Mounting specification
Notice-PGA-E
© 2015 ROHM Co., Ltd. All rights reserved.
Rev.002
Datasheet
Precautions Regarding Application Examples and External Circuits
1.
If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the
characteristics of the Products and external components, including transient characteristics, as well as static
characteristics.
2.
You agree that application notes, reference designs, and associated data and information contained in this document
are presented only as guidance for Products use. Therefore, in case you use such information, you are solely
responsible for it and you must exercise your own independent verification and judgment in the use of such information
contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses
incurred by you or third parties arising from the use of such information.
Precaution for Electrostatic
This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper
caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be
applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron,
isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control).
Precaution for Storage / Transportation
1.
Product performance and soldered connections may deteriorate if the Products are stored in the places where:
[a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2
[b] the temperature or humidity exceeds those recommended by ROHM
[c] the Products are exposed to direct sunshine or condensation
[d] the Products are exposed to high Electrostatic
2.
Even under ROHM recommended storage condition, solderability of products out of recommended storage time period
may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is
exceeding the recommended storage time period.
3.
Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads
may occur due to excessive stress applied when dropping of a carton.
4.
Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of
which storage time is exceeding the recommended storage time period.
Precaution for Product Label
QR code printed on ROHM Products label is for ROHM’s internal use only.
Precaution for Disposition
When disposing Products please dispose them properly using an authorized industry waste company.
Precaution for Foreign Exchange and Foreign Trade act
Since concerned goods might be fallen under listed items of export control prescribed by Foreign exchange and Foreign
trade act, please consult with ROHM in case of export.
Precaution Regarding Intellectual Property Rights
1.
All information and data including but not limited to application example contained in this document is for reference
only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any
other rights of any third party regarding such information or data.
2.
ROHM shall not have any obligations where the claims, actions or demands arising from the combination of the
Products with other articles such as components, circuits, systems or external equipment (including software).
3.
No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any
third parties with respect to the Products or the information contained in this document. Provided, however, that ROHM
will not assert its intellectual property rights or other rights against you or your customers to the extent necessary to
manufacture or sell products containing the Products, subject to the terms and conditions herein.
Other Precaution
1.
This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM.
2.
The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written
consent of ROHM.
3.
In no event shall you use in any way whatsoever the Products and the related technical information contained in the
Products or this document for any military purposes, including but not limited to, the development of mass-destruction
weapons.
4.
The proper names of companies or products described in this document are trademarks or registered trademarks of
ROHM, its affiliated companies or third parties.
Notice-PGA-E
© 2015 ROHM Co., Ltd. All rights reserved.
Rev.002
Datasheet
General Precaution
1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents.
ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny
ROHM’s Products against warning, caution or note contained in this document.
2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior
notice. Before purchasing or using ROHM’s Products, please confirm the la test information with a ROHM sale s
representative.
3.
The information contained in this doc ument is provi ded on an “as is” basis and ROHM does not warrant that all
information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or
liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or
concerning such information.
Notice – WE
© 2016 ROHM Co., Ltd. All rights reserved.
Rev.001