Pioneer DEH-P880PRS Service Manual page 92

1
* PM9009A
56
A
1
14
B
15
C
* BR25L320F-W
D
cs
1
INSTRUCTION DECODE
2
SO
wp
3
GND 4
E
F
92
1
2
43
42
29
28
VOLTAGE
DETECTION
CONTROL CLOCK
GENERATION
WRITE
INHIBITION
INSTRUCTION
REGISTER
ADDRESS
12bit
REGISTER
DATA READ/WRITE
8bit
REGISTER
DEH-P880PRS/XN/UC
2
3
* TC74VHCT08AFTS1
* TC74VHC08FTS1
1 1A
2 1B
3 1Y
4 2A
5 2B
6 2Y
7 GND
HIGH VOLTAGE
GENERATOR
STATUS
REGISTER
ADDRESS
12bit
DECODER
32 768bit
EEPROM
8bit
AMP
3
8 VCC
hold
7
6 SCK
SI
5
4
14 VCC
13 4B
12 4A
11 4Y
10 3B
9 3A
8 3Y
4