Pioneer DEH-P946, Service Manual

Page: 102 / 142

102
DEX-P1R,DEH-P946,DEX-P1
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Pin Functions (PD6191A)
Pin No. Pin Name I/O Format Function and Operation
1-8 OPEN Open
9
oe
O ROM output control
10
romen
O ROM enable
11 ADD17 O ROM address
12 AVCC Analog power supply
13 AVR 5V power supply
14 AVSS Connect to GND
15
irsel
I Select input
16 RCK I RDS demodulation clock input
17 RDT I RDS demodulation data input
18 OPEN Open
19
rdslk
I RDS LK signal input
20
irrst
I Reset input
21 MOD0 I Connect to GND
22 MOD1 I Connect to GND
23 XIN I Crystal oscillating element connection pin
24 XOUT O Crystal oscillating element connection pin
25 VSS GND
26
drst
O C Reset output
27,28 OPEN Open
29 IRRDY O C Communication ready output
30-33 ADD16-13 O ROM address
34-41 ADD7-0 O ROM address
42-49 DT7-0 I ROM data input
50 VSS GND
51 TEST I Test terminal
52
irsck
Communication clock input
53 IRDO O C Communication data output
54 IRDI I Communication data input
55,56 OPEN Open
57 VCC 5V
58 SD I SD signal input
59 OPEN Open
60-64 ADD8-12 O ROM address
Format Meaning
C C MOS
1
9
20
32
33 51
1
64
52
*PD6191A
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
A3 A2 A1 A0 D0 D1
D2
VSS
D3 D4 D5 D6 D7
CE
A10
OE
A4 A5 A6 A7 A12 A15 A16 NC VCC A18 A17 A14 A13 A8 A9 A1
1
A0-A18 : Address input
D0-D7 : Data output
CE : Chip enable
OE : Output enable
VCC : Power supply
VSS : Ground
NC : No connection
PD8034A