Iic Bus D/A Converter (Ic3551, M62393Fp) - Canon LV-S3E/D78-5423 Service Manual

Part 4: Troubleshooting
Pin No. Name
51 D5
184 D4
121 D3
50 D2
49 D1
183 D0
127 RD
56 WR
118 BHEN
188 ROMOE
126 ROMWE
125 RAMOE
54 RAMWE
177 Port C1
230 Port C0
238 EXTINT
120 NMI
48 RESET
233 ADR24B
133 MODE3
290 MODE2
248 MODE1
232 MODE0
Note: Other functions except for system control are not listed.

2.2 IIC Bus D/A Converter (IC3551, M62393FP)

Pin No. Name
1 R
2 SCL
3 SDA
4 A05
5 A06
6 A07
7 A08
8 VrefL
9 VrefU 1
10 Vss
11 VrefU 2
12 A01
13 A02
14 A03
15 A04
16 Vcc
17 Vdd
18 CS2
19 CS1
20 CS0
Function Name Function
D5 Data Bus 5
D4 Data Bus 4
D3 Data Bus 3
D2 Data Bus 2
D1 Data Bus 1
D0 Data Bus 0
RD Read Enable
WR Write Enable
BHEN High Byte Enable
ROMOE ROM Output Enable for Flash ROM
ROMWE ROM Write Enable for Flash ROM
RAMOE RAM Output Enable
RAMWE RAM Write Enable
CS3 Chip Select 3
CS2 Chip Select 2
EXTINT External Interrupt Input
- Non-maskable Interrupt (Not used)
RESET Master Reset Input
ADR24B 24bit Address Select Input
NODE3 Internal Oscillator Enable Enable Input
MODE2 Reserved
MODE1 Internal MCLK PLL Enable Input
MODE0 Internal DCLK PLL Enable Input
Function
Reset Input
P_SCK2
P_SDA2
CG_FILT
FILT_480P/575P
S/CV_SW
Not used
DAC Lower Reference Voltage input
DAC Upper Reference Voltage input (CH5~CH8)
GND
DAC Upper Reference Voltage input (CH1~CH 4)
AUD_PC/AV_SW
VOLUME
PC/AV_SW
CBAL_SW
Power Supply for Output Buffer (+5V)
Power Supply +5V
Slave address setting port 2 (GND)
Slave address setting port 1 (GND)
Slave address setting port 0 (GND)
IIC BUS SCL
IIC BUS SDA
Color Correction On/Off
4-8
Polarity I/O
I/O
I/O
I/O
I/O
I/O
I/O
Not used I/O
Not used I/O
Not used I/O
O
O
Not used O
Not used O
Not used O
Not used O
I/O
(set L) I
I
(set H) I
(set H) I
(set L) I
(set H) I
(set H) I
I/O
I
I
I/O
O
O
O
O
-
-
-
-
O
O
O
ON = L O
-
-
I
I
I