Pioneer DEH-P680MP Service Manual page 68

1
-Pin Functions (PEG144A)
Pin No. Pin Name
1 NC
A
2 ROMDT
3 ROMCK
4 REM
5 ROMCS
6 BYTE
7 CNVSS
8,9 NC
reset
10
11 XOUT
12 VSS1
13 XIN
14 VCC1
B
nmi
15
16 NC
ks#-)
17-20
21 NC
22 D_SEL
23 NC
24 CKD
25 NC
26 LS
27 DPDT
28 KYDT
C
29-32 NC
33 OELD
34 NC
35 CLK0
36 NC
rdy
37
38 NC
hold
39
40,41 NC
rd
42
43,44 NC
D 45,46 BANK2,1
47 NC
cs)
48
49-59 A19-9
60 VCC2
61 A8
62 VSS2
63-70 A7-0
71-86 D15-0
87 NC
88 JOYST
89,90 NC
E
kd#-!
91-93
94 AVSS
kd)
95
96 VREF
97 AVCC
98-100 NC
F
72
1
2
I/O
Not used
I/O ROM data input/output
I ROM clock input
I Remote control input
ROM chip select
GND
GND
Not used
I Reset input
O Main clock output
VSS
I Main clock input
VCC
I
NMI input
Not used
I/O
Key strobe input/output
Not used
Data select
Not used
O Data transfer and a driver operation clock output
Not used
O Line sink signal output
I Display data communication input
O Key data communication output
Not used
O Display data output
Not used
I
Clock input for UART1
Not used
(Pull up)
Not used
(Pull up)
Not used
O
Read strobe output
Not used
O Bank address output
Not used
ROM chip select
O Address bus output
VCC
O Address bus output
VSS
O Address bus output
I/O Data bus input/output
Not used
I Joystick input
Not used
I
Key data input
VSS
I Key data input
VSS
VCC
Not used
DEH-P680MP/XN/UC
2
3
Function and Operation
3
4
4