Pioneer DEH-P6800MP, Service Manual

Page: 72 / 80

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