SANYO LC7872E

Ordering number : EN4868A
CMOS LSI
LC7872E
CD Graphics Decoder
Overview
Features
The LC7872E is a CMOS LSI that integrates in a single
chip the signal processing functions required for compact
disk graphics (CD-G) decoding. The LC7872E accepts the
subcode R to W signals output by a CD-DSP chip such as
the Sanyo LC786X series, LC7862XE series or
LC7863XE series and performs de-interleaving, error
detection and correction, graphics instruction processing
and image processing.
• A CD-G decoder can be implemented with just two
chips: a controller is not required.
• Silicon gate CMOS structure for low power operation
• Single 5 V power supply
• 64-pin QFP (QIP) package
Functions
3159-QFP64E
• Built-in RGB encoder allows a CD-G decoder to be
implemented in just two chips: the LC7872E and an
external 64-kword × 4-bit DRAM
• Interpolation and protection for the CD subcode
synchronization signals as well as de-interleaving, error
detection and correction for the R to W signals.
• Two crystal oscillator systems, one for NTSC and one
for PAL are provided and can be switched easily using
the control pin provided. The standard clock and all
required internal timings can be generated by
connecting a 14.31818 MHz crystal for NTSC and/or a
17.734476 MHz crystal for PAL.
• The LC7872E performs CD graphics instruction
processing and drawing processing and controls the
image display.
• Composition video 8-bit D/A converter output provided
• Superimposition support
• Microprocessor interface provided to support set
upgrades.
• Define transparency support
• Color bar output function
Package Dimensions
unit: mm
[LC7872E]
SANYO: QFP64E
• CCB is a trademark of SANYO ELECTRIC CO., LTD.
• CCB is SANYO’s original bus format and all the bus
addresses are controlled by SANYO.
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
O3097HA (OT)/20695TH (OT) No. 4868-1/17
DB0 to DB3
Block Diagram
Microcontroller
interface
A0 to A7
LC7872E
TRANS0 to TRANS5
Pin Assignment
No. 4868-2/17
LC7872E
Specifications
Absolute Maximum Ratings at Ta = 25°C, VSS = 0 V
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
VDD max
VSS – 0.3 to +7.0
V
Maximum input voltage
VIN max
VSS – 0.3 to VDD + 0.3
V
VOUT max
VSS – 0.3 to VDD + 0.3
Maximum output voltage
Allowable power dissipation
Pd max
300
V
mW
Operating temperature
Topr
–30 to +85
°C
Storage temperature
Tstg
–40 to +125
°C
Allowable Operating Ranges at Ta = 25°C, VSS = 0 V
Parameter
Supply voltage
Input high level voltage
Input low level voltage
Symbol
VDD
Conditions
VDD1, VDD2
VIH (1)
RESET
VIH (2)
SFSY, PW, SBSY, CE, DI, CL, MUTE, DB0 to DB3,
PALID, HRESET, VRESET, N/P1, N/P2, SON
min
typ
max
Unit
4.5
5.5
V
0.7 VDD
VDD
V
2.2
VDD
V
VIH (3)
S1, S2, CB, TEST, TEST1, LINE, DEN
0.8 VDD
VDD
V
VIL (1)
RESET
VSS
0.3 VDD
V
VIL (2)
SFSY, PW, SBSY, CE, DI, CL, MUTE, DB0 to DB3,
PALID, HRESET, VRESET, N/P1, N/P2, SON
VSS
0.8
V
VIL (3)
0.2 VDD
S1, S2, CB, TEST, TEST1, LINE, DEN
VSS
tøH
CL: Figure 1
400
ns
Low level clock pulse width
tøL
CL: Figure 1
400
ns
Data setup time
tDS
CL, DI: Figure 1
200
ns
Data hold time
tDH
CL, DI: Figure 1
200
ns
CE wait time
tCP
CE, CL: Figure 1
400
ns
CE setup time
tCS
CE, CL: Figure 1
400
ns
CE hold time
tCH
CE, CL: Figure 1
400
tDOS
CL, DO: Figure 1
130
fin (1)
XIN1
fin (2)
XIN2
High level clock pulse width
DO setup time
Input frequency
fin (3)
fin (4)
Input amplitude
Reset pulse width
VIN
tWRES
4FSC2
FSCIN
V
ns
300
ns
14.31818
MHz
17.734476
MHz
14.31818
MHz
17.734476
MHz
NTSC mode
3.58
MHz
PAL mode
4.43
MHz
NTSC mode
PAL mode
XIN1, XIN2, 4FSC2, FSCIN:
sine wave, capacitive coupling
0.3
RESET
400
5
Vp-p
ns
Electrical Characteristics at Ta = 25°C, VSS = 0 V, VDD = 5 V
Parameter
Current drain
Input high level current
Input low level current
Output high level voltage
Symbol
max
Unit
IDD (1)
VDD1
24
40
mA
IDD (2)
VDD2
12
20
mA
IIH (1)
S1, S2, SFSY, PW, SBSY, CE, DI, CL, MUTE, LINE,
HRESET, VRESET, N/P1, N/P2, RESET, SON:
VIN = VDD
5
µA
IIH (2)
CB, TEST, TEST1, DEN: VIN = VDD
30
200
µA
VIL (1)
S1, S2, SFSY, PW, SBSY, CE, DI, CL, MUTE, LINE,
HRESET, VRESET, N/P1, N/P2, RESET, SON:
VIN = VSS
–5
VIL (2)
PALID: VIN = VSS
VOH
Conditions
SBCK, WE, RAS, CAS, OE, A0 to A7, DB0 to DB3,
CDGM, TRANS0 to TRANS5, VSYNC, YS, CSYNC,
EFLG, FSX, FSC: IO = –0.5 mA
min
–200
VDD – 1
typ
100
µA
–100
–30
µA
VDD
V
Continued on next page.
No. 4868-3/17
LC7872E
Continued from preceding page.
Parameter
Output low level voltage
Symbol
Conditions
VOL (1)
SBCK, WE, RAS, CAS, OE, A0 to A7, DB0 to DB3,
CDGM, TRANS0 to TRANS5, VSYNC, YS, CSYNC,
EFLG, FSX, FSC: IO = 2 mA
VSS
0.4
DO: IO = 5 mA
VSS
0.75
V
–5
+5
µA
VOL (2)
Output off leakage current
Built-in feedback resistance
IOFF
RX
DO, DB0 to DB3
min
XIN1, XIN2, 4FSC2, FSCIN
VREF
VIDEO
8-bit D/A converter
output resistance
RDA
VIDEO
8-bit D/A converter output level
VDAC
VIDEO: Figure 9
Random read/write cycle time
tRC
Figures 2 and 3
250
Page mode cycle time
tPC
Figures 4 and 5
130
tRAC
Figure 2
CAS access time
tCAC
Output turn-off delay time
max
1
8-bit D/A converter
reference voltage
RAS access time
typ
2.40
2.45
Unit
V
MΩ
2.50
V
Ω
300
ns
ns
210
ns
Figures 2 and 4
10
ns
tOFF
Figures 2 and 4
20
ns
RAS precharge time
tRP
Figures 2, 3, 4, 5 and 6
100
RAS pulse width
tRAS
Figures 2, 3 and 6
120
RAS pulse width (page mode)
tRASP
Figures 4 and 5
RAS hold time
tRSH
Figures 2, 3, 4 and 5
CAS hold time
tCSH
Figures 2 and 3
CAS pulse width
tCAS
CAS precharge time
tCPN
ns
ns
18000
ns
60
ns
120
ns
Figures 2, 3, 4 and 5
60
ns
Figure 6
50
ns
50
ns
ns
CAS precharge time (page mode)
tCP
Figures 4 and 5
Row address setup time
tASR
Figures 2, 3, 4 and 5
100
Row address hold time
tRAH
Figures 2, 3, 4 and 5
50
ns
Column address setup time
tASC
Figures 2, 3, 4 and 5
0
ns
Column address hold time
tCAH
Figures 2, 3, 4 and 5
50
ns
Read command setup time
tRCS
Figure 2
150
ns
Read command hold time
(referenced to CAS)
tRCH
Figure 2
120
ns
Read command hold time
(referenced to RAS)
tRRH
Figure 2
120
ns
Write command setup time
tWCS
Figure 3
100
ns
Write command hold time
tWCH
Figure 3
50
ns
tWP
Figure 3
150
ns
Write data setup time
tDS
Figure 3
100
ns
Write data hold time
tDH
Figure 3
100
ns
CAS setup time (CAS before RAS)
tCSR
Figure 6
50
ns
CAS hold time (CAS before RAS)
tCHR
Figure 6
50
ns
RAS precharge · CAS active time
tRPC
Figure 6
50
Superimposition: Figure 7
20
25
ns
NTSC mode: Figure 8
4.74
5.03
µs
PAL mode:
4.79
5.08
Write command pulse width
Video setup time
tVS
SBCK output delay time
tSD
SBCK cycle frequency
PW setup time
fSC
tPWS
NTSC mode: Figure 8
PAL mode:
Figure 8
100
ns
µs
224
kHz
222
kHz
ns
No. 4868-4/17
LC7872E
Figure 1 Microcontroller Interface Timing
A0 to A7
DB0 to DB3
Figure 2 DRAM Read Cycle
No. 4868-5/17
LC7872E
A0 to A7
DB0 to DB3
Figure 3 DRAM Early Write Cycle
A0 to A7
DB0 to DB3
Figure 4 DRAM Page Mode Read Cycle
No. 4868-6/17
LC7872E
A0 to A7
DB0 to DB3
Figure 5 DRAM Page Mode Write Cycle
Figure 6 DRAM CAS before RAS Refresh Cycle
Figure 7 Phase Relationships in Superimposition Mode
No. 4868-7/17
LC7872E
Pin S1 = Pin S2 = High
Figure 8 Subcode Interface
Figure 9 Composite Video 8-Bit Digital Values (Color Bar Output) at VDD2 = 5 V
No. 4868-8/17
LC7872E
Pin Functions
Pin No.
Symbol
I/O
1
S1
I
Function
CD DSP selection
2
S2
I
3
SBCK
O
Subcode R to W readout clock
4
SFSY
I
Subcode frame synchronization signal
5
PW
I
Subcode R to W data
6
SBSY
I
7
VDD1
—
S1
S2
0
0
CD DSP
LC7861N/67
1
0
LC7860K/63
1
1
LC7868/69/681
Subcode block synchronization signal
Digital system power supply
8
CE
I
Serial input or control pin during serial output
9
DO
O
Serial data output (N-ch open drain)
10
DI
I
Serial data input
11
CL
I
Serial data I/O clock
12
MUTE
I
Control signal that invalidates the subcode data
13
VSS1
—
Digital system ground
14
WE
O
DRAM control
15
RAS
O
DRAM control
16
A0
O
DRAM address
17
A1
O
DRAM address
18
A2
O
DRAM address
19
A3
O
DRAM address
20
A4
O
DRAM address
21
A5
O
DRAM address
22
A6
O
DRAM address
23
A7
O
DRAM address
24
DB0
I/O
DRAM data
25
CAS
O
DRAM control
26
DB1
I/O
DRAM data
27
OE
O
DRAM control
28
DB2
I/O
DRAM data
29
DB3
I/O
DRAM data
30
CB
I
High: color bar output
Low: normal mode
31
CDGM
O
Outputs a high level when a CD-G disk detected
32
TRANS0
O
Transparency digital output
33
TRANS1
O
Transparency digital output
34
TRANS2
O
Transparency digital output
35
TRANS3
O
Transparency digital output
36
TRANS4
O
Transparency digital output
37
TRANS5
O
Transparency digital output
38
VSS2
—
Composite video D/A converter ground
(pull-down resistor built in)
39
VDD2
—
Composite video D/A converter power supply
40
BIAS
O
Ripple exclusion capacitor connection
41
VIDEO
O
Composite video output (8-bit D/A converter output)
42
TEST
I
Test pin. Must be tied low in normal operation (pull-down resistor built in)
43
LINE
I
When pin NP2 is high: High: 263H, Low: 262H
When pin NP2 is low: High: 312H, Low: 314H
44
FSCIN
I
Subcarrier clock input (feedback resistor built in)
45
VSYNC
O
Vertical synchronization signal output
46
TEST1
I
Test pin. Must be tied low in normal operation (pull-down resistor built in)
47
YS
O
Superimposition control output
48
CSYNC
O
Composite synchronization signal output
49
4FSC2
I
Superimposition mode external clock input (feedback resistor built in)
50
EFLG
O
Error state monitor
Continued on next page.
No. 4868-9/17
LC7872E
Continued from preceding page.
Pin No.
Symbol
I/O
51
FSX
O
Error state monitor trigger
Function
52
DEN
I
Disk information display enable pin
53
PALID
I
Superimposition PAL mode external control (pull-up resistor built in)
54
HRESET
I
Horizontal timing external control
55
FSC
O
Subcarrier clock output
56
VRESET
I
Vertical timing external control
57
RESET
I
Reset input
58
N/P1
I
NTSC/PAL selection
High: NTSC
(RGB encoder)
Low: PAL
59
N/P2
I
NTSC/PAL selection
High: NTSC
(CD-G decoder)
Low: PAL
60
SON
I
Superimposition on/off
61
XIN2
I
Crystal oscillator connection 17.734476 MHz (PAL)
62
XOUT2
O
Crystal oscillator connection 17.734476 MHz (PAL)
63
XIN1
I
Crystal oscillator connection 14.31818 MHz (NTSC)
64
XOUT1
O
Crystal oscillator connection 14.31818 MHz (NTSC)
High: BGC
(pull-down resistor built in)
Low: Enable
NTSC mode: 3.579545 MHz
PAL mode: 4.433619 MHz
CD-G Instructions
The LC7872E supports the following instructions that appear in the R to W subcodes as described in the CD Red Book.
1. MODE = 0, ITEM = 0 ZERO mode
2. MODE = 1, ITEM = 0 LINE GRAPHICS mode
• Write FONT instruction (4)
• Write Scroll SCREEN instruction (12)
3. MODE = 1, ITEM = 1 TV-GRAPHICS mode
• Preset MEMORY instruction (1)
• Preset BORDER instruction (2)
• Write FONT FOREGROUND/BACKGROUND instruction (6)
• Scroll SCREEN with preset instruction (20)
• Scroll SCREEN with Copy instruction (24)
• Load CLUT Color-0...7 instruction (30)
• Load CLUT Color-8...15 instruction (31)
• EXCLUSIVE-OR FONT instruction (38)
• Define Color Transparency instruction (28)
No. 4868-10/17
LC7872E
Pin Applications
1. Crystal Clock Oscillator; XIN1, XOUT1, XIN2, XOUT2, N/P1, N/P2, FSC, CSYNC, LINE and VSYNC
The LC7872E provides two crystal oscillator systems as follows.
Pins XIN1 and XOUT1 are for use with a 14.31818 MHz crystal oscillator (NTSC)
Pins XIN2 and XOUT2 are for use with a 17.734476 MHz crystal oscillator (PAL)
Crystals can be connected to either crystal system 1 or 2 according to the application, or both systems can be used
under the control of pins N/P1 and N/P2 to implement an application that supports both video standards. The N/P1
pin switches the LC7872E RGB encoder block between NTSC and PAL and the N/P2 pin switches the decoder block
between NTSC and PAL. The FSC pin outputs a clock that is the crystal oscillator frequency divided by four. The
CSYNC pin is the composite synchronization signal output and VSYNC is the vertical synchronization signal output.
The LINE pin switches the number of lines on a screen.
The table below lists the pin states in each mode.
XIN1, XOUT1
XIN2, XOUT2
14.31818 MHz
*
*
17.734476 MHz
14.30244 MHz
*
N/P1
High
Low
Low
N/P2
High
Low
High
Television system
NTSC/M
PAL/GBIDH
PAL/M
FSC
3.579545 MHz
4.433619 MHz
3.575611 MHz
LINE
CSYNC
H
16.71511323 ms
L
16.65155767 ms
H
19.96788628 ms
L
20.09588555 ms
H
16.73350841 ms
L
16.6698829 ms
2. Subcode Interface; S1, S2, SBSY, SFSY, PW, SBCK and MUTE
The LC7872E supports three interface modes under the control of pins S1 and S2. When the MUTE pin is set high,
SBSY and PW input is disabled and SBCK output stops.
S1
Low
High
S2
Low
Low
High
High
Mode
LC7861N/67 interface
LC7860K/63 interface
LC7868/69/681 interface
The SBCK delivery condition is that SFSY be confirmed to be low about 2.2 µs after the SFSY falling edge in
LC7860K/63 interface mode. In the other interface modes, the condition is that SFSY be confirmed to be high and
SBSY be confirmed to be low about 2.2 µs after the SFSY rising edge.
• LC7860 interface (Pin names in parentheses are LC7860 pins.)
Note: 1. PWSY will be high during the S0 and S1 periods.
2. The SBSY pin must be held low.
No. 4868-11/17
LC7872E
• LC7861N/67 interface (Pin names in parentheses are DSP pins.)
• LC7868/69/681 interface
Identical to the LC7861N/67 interface except that the SBCK polarity is reversed (the shift occurs on the rising
edge).
3. DRAM Interface; A0 to A7, DB0 to DB3, RAS, CAS, WE, OE
The LC7872E uses an external 64-kword × 4-bit DRAM.
4. Display Format; DEN, N/P1, N/P2, CSYNC, VRESET, HRESET, YS, VIDEO, PALID and TRANS0 to TRANS5
• Data to which error detection and correction has been applied is encoded by the RGB encoder and the 8-bit D/A
converter output is output from the VIDEO pin. This circuit handles both NTSC and PAL formats and either mode
can be specified using the N/P pins. See item 1 for details on the pin states for the NTSC and PAL specifications.
• The 4FSC2, FSCIN, YS, VRESET, HRESET, PALID and TRANS0 to TRANS5 pins are used in superimposition
mode. The image may be disrupted if the VRESET and HRESET signals are not synchronized with 4FSC2.
The PALID pin is controlled in PAL mode, and is used to match the LC7872E burst signal to the burst component
of the external video signal. When this pin is high, the phase of the burst signal changes every horizontal period,
and when this pin is low, the phase does not change.
The YS pin outputs a control signal used to switch between an external video signal and the LC7872E video signal.
The output conditions for this signal are set by the 2N byte command input registers 0, E, F, and G. The pins
TRANS0 through TRANS5 output signals according to the define transparency instruction.
• The DEN pin is a display control pin. The internal font data is output when DEN is low and the color data set up in
the registers is used when DEN is high. The default state is blue.
No. 4868-12/17
LC7872E
5. CD Graphics Monitor; CDGM
The CDGM pin goes high when the LC7872E receives any CD-G instruction. Since once this pin goes high it
remains high as long as power is applied, using this pin requires a reset when the disk is changed.
6. Video Output; VIDEO
A composite video signal is output from the VIDEO pin. The output level of the 8-bit D/A converter is 2.5 Vp-p.
Therefore only an external 75 Ω driver is required to acquire a 1 Vp-p rated output.
7. Error Flag Output; EFLG and FSX
The result of the error detection process can be monitored from the EFLG pin.
8. Color Bar Output; CB
The VIDEO pin outputs a color bar pattern when the CB pin is set high. The tables below describe this color bar
pattern.
RGB Mixture Ratio (HEX)
R
G
WHITE
Item
F
F
B
F
GRAY
B
B
B
YELLOW
F
F
0
CYAN
0
F
F
GREEN
0
F
0
MAGENTA
F
0
F
RED
F
0
0
BLUE
0
0
F
BORDER (BLACK)
0
0
0
No. 4868-13/17
LC7872E
Microcontroller Interface (CCB Bus)
1. 2N byte input command
Address (F4h): lsb [ 0 0 1 0 1 1 1 1 ] msb
Control item: lsb [ 0 - - - A A A A ] msb; Where AAAA is the register number.
Register 0 (mode setting)
Data: lsb [ A B C D E F G H ] msb; Default: [ 0 0 0 0 0 1 1 0 ]
A = VRAM/BG 0: Display the contents of VRAM
1: Display the background color (BGC)
B = TV/LINE
0: TV graphics mode
1: Line graphics mode
C = Disk command enable
0: Only disk commands are accepted.
1: Disk commands are ignored and only MGC is accepted.
D = Color bar on/off
0: Off
1: Color bar on
EFG = Comparison conditions in superimposition mode (only valid when SON = 1)
EF = 00: Comparison not performed.
01: When the border color is not black, YS is set high (display) for section whose color does
not match the border color and is set low (clear) otherwise.
11: YS is set high for sections that do not match the chroma key color, and is set low
otherwise.
G = 0: The whole screen is set low (clear) when the comparison condition does not hold for EF
= 00 and EF = 01.
G = 1: The whole screen is set high (display) when the comparison condition does not hold for
EF = 00 and EF = 01.
H = INIT
0: Normal
1: Internal reset
On an internal reset the display screen is set to a blue background screen.
Register 1 (screen position adjustment)
Data: lsb [ H H H H V V V V ] msb; Default: [ 0 0 0 0 0 0 0 0 ]
H = horizontal direction. The value is specified as a two’s complement value with left being the positive
direction. Position is adjustable in two dot units from –16 to +14 dots from the center.
V = vertical direction. The value is specified as a two’s complement value with up being the positive
direction. Position is adjustable in two dot units from –16 to +14 dots from the center.
Register 2 (on/off settings for channels 0 to 7)
Data: lsb [ C C C C C C C C ] msb; Default: [ 1 1 0 0 0 0 0 0 ]
C = channel 0 to 7
0: off
1: on
No. 4868-14/17
LC7872E
Register 3 (on/off settings for channels 8 to 15)
Data: lsb [ C C C C C C C C ] msb; Default: [ 0 0 0 0 0 0 0 0 ]
C = channel 8 to 15
0: off
1: on
Register 4 (BGC R and G setting)
Data: lsb [ R R R R G G G G ] msb; Default: [ 0 0 0 0 0 0 0 0 ]
Register 5 (BGC B setting)
Data: lsb [ B B B B - - - - ] msb; Default: [ 0 1 0 1 - - - - ]
Register 6 (chroma key color R and G settings)
Data: lsb [ R R R R G G G G ] msb; Default: [ 0 0 0 0 0 0 0 0 ]
Register 7 (chroma key color B setting)
Data: lsb [ B B B B - - - - ] msb; Default: [ 0 0 0 0 - - - - ]
Register 8 (burst phase setting, only valid when SON = 1)
Data: lsb [ F F - - - - - P ] msb; Default: [ 0 0 - - - - - 0 ]
Register 9 (YS and TRANS output timing)
Data: lsb [ T T T - - - - - ] msb; Default: [ 0 0 1 - - - - - ]
T = phase setting. The phase difference between YS and TRANS (the digital output) and the
video signal can be set to one of 8 levels from 0 to 7 in units of single 4FSC clock cycles. At a
value of 4 the phase is identical to that of the VIDEO pin.
Register 10 (External synchronization on/off, test mode)
Data: lsb [ T T T - - Y S R ] msb; Default: [ 0 0 0 - - - 0 0 ]
T = test mode setting
R = 0:Only the display area is moved
1:Motion also includes the border area (only left/right motion supported)
S = 0:Normal
1:Initializes the TLUT contents to all 0.*
Y = 0:Resets HRESET and VRESET when an external clock is used (SON = 1)
1:Resets VRESET when an external clock is used (SON = 1) (HRESET is not required)
Note: * In this state the define transparency command will not be accepted. (Return the system
to the S = 0 state.)
Register 11 (subtitle scrolling, vertical)
Data: lsb [ V V V V V - - - ] msb; Default: [ 0 0 0 0 0 - - - ]
This setting allows the subtitle screen display position to be scrolled in font height units.
V = vertical (up) scrolling distance (0 to 17 font height units)
Register 12 (subtitle scrolling, horizontal)
Data: lsb [ H H H H H H - - ] msb; Default: [ 0 0 0 0 0 0 - - ]
This setting allows the subtitle screen display position to be scrolled in font width units.
H = horizontal (left) scrolling distance (0 to 49 font width units)
Register 13 (TRANS setting, only valid when SON = 1)
Data: lsb [ B B B B B B - P ] msb; Default: [ 0 0 0 0 0 0 - 1 ]
P = 1: Enables the TRANS setting.
0: Invalid
(The whole screen is displayed and burst goes to the CDG side.)
B = the BGC TRANS value
No. 4868-15/17
LC7872E
2. 19-byte input command (MGC write)
Address (F4h): lsb [ 0 0 1 0 1 1 1 1 ] msb
Control item: lsb [ 1 - - - - - - - ] msb
Data:
lsb [ - - WV U T S R ] msb; R to W is the subcode input.
This command is executed on the CE falling edge.
3. 19-byte output command (packed data readout)
Address (F5h): lsb [ 1 0 1 0 1 1 1 1 ] msb
Check flags: lsb [ A B C D Q Q P P ] msb
Data:
lsb [ - - WV U T S R ] msb
A = Set to 1 when the following 18 bytes are guaranteed and furthermore this is the first data item read out.
(The readout operation must be completed within 1.1 ms.)
B = 0: Command execution in progress
1: Command wait state
C = VBLANK:Set to 1 during the vertical blanking period
D = Disk identifier flag
0: CD
1: CD-G
Q = QF0 and QF1 (Q error correction flags)
P = PF0 and PF1 (P error correction flags)
Note that when it is not necessary to read out all 19 bytes, the readout can be interrupted at any point in byte units.
(In particular, this command can be used to read out only the check flags.)
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LC7872E
NTSC Application Circuit Using the LC7872E
■ No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace
equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of
which may directly or indirectly cause injury, death or property loss.
■ Anyone purchasing any products described or contained herein for an above-mentioned use shall:
➀ Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and
distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all
damages, cost and expenses associated with such use:
➁ Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on
SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees
jointly or severally.
■ Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for
volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied
regarding its use or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of October, 1997. Specifications and information herein are subject to
change without notice.
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