ROHM BU9929FV

BU9929FV
Multimedia ICs
I2C BUS interface, general purpose I/O
ports with condition watching function
BU9929FV
2
ROHM’s GPIO is a general-purpose IO that contains I C BUS interface. It also contains monitoring function that conveys
2
a change of the signal level in terminal to the host system via interrupt terminal or I C BUS.
!Applications
2
Notebook PC, PC, VCR, TV etc. and other systems with I C BUS.
!Features
2
1) I C BUS interface
2) General purpose I/O port 16bits
3) State monitoring function to monitor all terminals
2
4) State detection signal serial output by I C BUS master function
5) Output port of state detection signal
6) State detection ON/OFF setting input port during the default status
7) 32.768kHz clock input
8) Power supply voltage 3.3V / 5.0V
!Absolute maximum ratings (Ta=25°C)
Parameter
Symbol
Limits
Unit
VDD
7.0
V
Supply voltage
Pd
640
mW
Operating temperature
Topr
−15 to +75
˚C
Storage temperature
Tsig
−55 to +125
˚C
Terminal supply voltage
VIN
GND−0.5 to VDD+0.5
V
Power dissipation
∗Temperature derating : 6.4mW/˚C over Ta=25˚C
Radiation resistance is not included in the design.
Rohm CO., Ltd is a licensee of I2C BUS from Philips Semiconductors.
!Recommended operating conditions (Ta=25°C)
Parameter
Min.
Typ.
Max.
Unit
Operating supply voltage range
3.0
−
5.5
V
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BU9929FV
Multimedia ICs
!Block diagram
#RES
DEFAULT STATUS
DS
CLK
TIMING
GENERATOR
SDA
TIMING
CONTROLLER
I2C BUS
INTERFACE
SCL
EDGE DETECT
BLOCK
DATA LATCH
BLOCK
INT
SLAVE ADDRESS 2 BITS
AD0
PIO BUFFER
PIO15
PIO8
PION7
PION1
PION0
AD1
SCL
1
28
VDD
SDT
2
27
CLK
DS
3
26
RESB
TEST0
4
25
PIO15
PION0
5
24
PIO14
PION1
6
23
PIO13
PION2
7
22
PIO12
PION3
8
21
PIO11
PION4
9
20
PIO10
PION5
10
19
PIO9
PION6
11
18
PIO8
INT
12
17
TEST1
PION7
13
16
AD1
GND
14
15
AD0
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BU9929FV
Multimedia ICs
!Pin description
Pin. No
Pin. Name
1
2
SCL
SDT
3
DS
26
RES#
Reset terminal
Reset condition by "L" input
PION
Nch open drain standard input/output
terminal. Input at TTL level.
This waits for condition detection function
of input.
Output will be Hi-Z at Shut Down mode.
5V input is possible when this IC is
operated by 3.3V.
18-25
PIO
Standard input/output terminal. Input at
TTL level.
This waits for condition detection function
of input. Output will be Hi-Z at Shut Down
mode.
14
GND
GND terminal
5-11,13
I/O circuit
Pin Description
I2C BUS Input/Output terminal
To set condition detection mode
at default state
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BU9929FV
Multimedia ICs
Pin. No
Pin. Name
I/O circuit
Pin Description
12
INT
Output terminal for condition change
detection.
Nch open drain output.
27
CLK
Clock input terminal.
32.768KHz should be put.
At Shut Down mode, clock supply into
this IC will be shut down.
28
VDD
Power terminal.
3.3V/5.0V should be put in.
15
16
AD0
AD1
Input terminal for setting of I2C BUS
Slave address lower 2 bits.
4
TEST0
IC TEST Pin.
"L" Input required for normal operation.
17
TEST1
IC TEST Pin.
"L" Input required for normal operation.
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BU9929FV
Multimedia ICs
!Electrical characteristics (Unless otherwise noted, VDD=5.0V, Ta=25°C)
Parameter
Circuit current (Normal)
Symbol
Min.
Typ.
Max.
Unit
IDD
−
6.0
30
µA
CLK=32.768Hz
Conditions
28
Test Pin No.
Shut Down Mode
28
Circuit current (Shut down mode)
IDS
−
0.1
2.0
µA
"H" Level input voltage 1
VIH1
VDD×0.7
VDD
VDD+0.5
V
1, 2
"L" Level input voltage 1
VIL1
−0.5
0.0
VDD×0.3
V
1, 2
"H" Level input voltage 2
VIH2
2.5
VDD
VDD+0.5
V
3, 4, 15-17
"L" Level input voltage 2
VIL2
−0.5
0.0
0.8
V
3-5, 11, 13
15-27
"H" Level input voltage 3
VIH3
2.5
VDD
5.5
V
5-11, 13
"H" Level input Current
IIH
2.0
0.0
1.0
µA
3-5, 11, 13
15-27
"L" Level input Current
IIL
−1.0
0.0
−
µA
3-5, 11, 13
15-27
VSOH
4.4
4.8
5.0
V
"L" Level output voltage 1
VSOL
0.0
0.2
0.6
"L" Level output voltage 2
VCOL
0.0
0.2
0.6
"H" Level output voltage
I2C Fall time
TFIC
−
100
250
IOH=4mA
18-25
V
IOL=4mA
5-13, 18-25
V
IOL=6mA
1, 2
ns
IOL=6mA
1, 2
CL=400pF
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BU9929FV
Multimedia ICs
2
I C BUS Interface characteristics (Unless otherwise noted, VDD=5.0V, Ta=25°C)
•Slave address
0
1
1
1
1
A1
A0
MSB
R/W
LSB
A0 and A1 are set by input terminals of AD0 and AD1 as follows;
When AD0 / AD1=H, A0 / A1=1
When AD0 / AD1=L, A0 / A1=0
2
•Conforming to I C BUS standard
Parameter
SCL clock frequency
Start condition hold time
Min.
Max.
Unit
f SCL
0
400
kHz
t HD : STA
0.6
−
µs
Symbol
Start condition set-up time
t SU : STA
0.6
−
µs
Data set-up time
t SU : DAT
100
−
ns
Data hold time
t HD : DAT
0
0.9
µs
Stop condition set-up time
t SU : STO
0.6
−
µs
(Start Timing)
SCL
SDA
t SU : STA
t HD : STA
(Data Timing)
SCL
SDA
t SU : DAT
t HD : DAT
(Stop Timing)
SCL
SDA
t SU : STO
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BU9929FV
Multimedia ICs
1. Data write mode
St SLAVE ADDRESS W
A COMMAND BYTE A
WRITE DATA 1
PION7 − PION0
A
WRITE DATA 2
A
Sp
PIO15 − PIO8
Command register : At reset, D0 to D7 are ”0”.
D7
D6
SHT DWN
INT SEL
D5
D4
DOUT SEL OUT ON
D3
DIR ON
D2
D1
D0
BYTE SEL EDGE SEL DET ON
D7 : Shut Down mode
0 : Shut down mode off (Normal operation mode)
1 : Shut down mode on
D6 : INT output method choice
0 : LOW output
1 : Output of LOW pulse equivalent for one period of CLK
D5 : Detection result output choice
0 : Serial output. INT pin is also valid.
2
1 : Serial output (I C MASTER function) off. Only INT pin is valid.
D4 : Output port writing set
0 : Writing invalid
1 : Writing valid. But, a port, which is indicated as input, is invalid.
Following Write data 2byte-0 : “L” output, 1 : “H” output
D3 : I / O direction set
0 : Direction set invalid
1 : Direction set valid
Following Write data 2byte-0 : input, 1 : output
D2 : Watching object input choice
0 : PION0 to PION7
1 : PION8 to PIO15
D1 : Change detection mode
0 : Falling edge
1 : Both rising and falling edge
D0 : Input port condition watching mode
0 : Invalid
1 : Valid
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BU9929FV
Multimedia ICs
2. Data read mode
2
According to the following format, input/output value of PIO/PION pins can be read by I C interface.
PIO data read
St SLAVE ADDRESS
R
A
READ DATA 1
A
READ DATA 2
PION7 − PION0
A
Sp
PIO15 − PIO8
PIO part block diagram
(PIO part block diagram)
I2C BUS
Output Buffer
Command D4
Output Register
Command D3
I / O select
Selector
IC
PAD
Shut Down
Read Mode
Input Register
Input Schmitt
Input Port sampling timing
As shown below, BU9929FV is sampling for Input Ports with the rising edges of CLK.
Therefore it is necessary that Input Ports are keeping at least 1 CLK cycle, for their certain inputs.
Watching Ports
F6
C7
AA
CLK
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BU9929FV
Multimedia ICs
3.Condition change detection result output mode
2
1) This IC becomes I C master device, and the detection result is sent according to the following format;
2Byte Watching
St
0 0 0 1 0 0 0
W
A
SLAVE ADDRESS +0
A
WRITE DATA 1
A
WRITE DATA 2
PION7 − PION0
A
Sp
PIO15 − PIO8
1Byte Watching
St
0 0 0 1 0 0 0
W
A
SLAVE ADDRESS +0
A
WRITE DATA 1
A
Sp
PION7 − PION0
<DATA Keeping Operation>
In a case that there is a change in detection port during detection result transmission, then watching data is saved by the
end of detection output, and it will be proceeded further after the detection output is finished.
However, the output data in this case will be “AND” output of every bits of the watching data.
Watching Ports
FE
FC
F0
In the case of Arbitration;
Output is delayed
Output for I2C BUS
FE
F8
AND Output of every bits of
the watching data
FC
F0
2) DS pin Description
2
By DS pin, valid/invalid of condition detection of the default condition (from RESET release to reception of the first I C
command) can be set.
<DS pic valid range>
2
In the range from RESET release to the first set of condition detection mode by I C command, the set of this pin will be
2
2
valid. After the set of condition detection mode by I C command, this pin will be invalid, and the set by I C commanded
will be reflected.
<Pin setting>
DS pin= “H” : Input bit condition detection mode is valid.
But, 1 byte detection mode (only PION7-PION0 will be in condition detection)
DS pin=“L” : Input bit condition detection mode is invalid.
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BU9929FV
Multimedia ICs
3)INT pin specification
When condition watching mode, INT output pin works for reporting of detection of watching port.
(a) When command D6=0(including default time after RESET release)
2
INT pin falls when detection of watching port is received. And INT pin rises after ACK-output which is on the I C Data
read.
Watching Ports
F8
CLK
Output for I2C BUS
St
SLAVE ADDRESS
A
OUTPUT "F8"
INT OUTPUT
In the case that there is a change in detection ports once, and there are another changes before returning the ACK (as
shown “A term”), then watching data is saved. And the output data in this case will be “AND” output of every bits of the
watching data.
Watching Ports
F6
C7
A4
" A term"
Output for I2C BUS
St
SLAVE ADDRESS
R
A
OUTPUT "84"
OUTPUT "84hex data" which
is the result of AND data
for "F6", "C7" and " A4".
CLK
INT OUTPUT
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BU9929FV
Multimedia ICs
(b) When command D6=1
INT pin outputs ”I clock cycle pulse” when detection of watching port is received. In the case that the output data is the
data whish is sampled immediately before the returning ACK.
Watching Ports
78
Output for I2C BUS
AA
St
SLAVE ADDRESS
R
A
OUTPUT "AA"
Data "78h" is not kept, the
output data is immediately
before sampled data.
CLK
INT OUTPUT
CLK 1 cycle pulse
4. Shut down mode
By command D7=1, this IC can be set to Shut down mode, which can save current consumption. At Shut down mode,
operation of CLK input pin will be stopped, and input of CLK into this IC can be shut down. Also, for every PIO/PION pins,
pins under output condition will be saved as Hi-Z.
At Shut down mode, condition-watching function can not be used.
Contents of each register before shut down will be saved by the shut down release.
!External dimensions (Unit : mm)
10.0±0.2
15
1
0.65
0.15±0.1
1.15±0.1
0.1
7.6±0.3
5.6±0.2
28
14
0.22±0.1
0.3Min.
0.1
SSOP-B28
11/11
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
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otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document use silicon as a basic material.
Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.0