Pioneer PDP-503CMX Service Manual page 140

1
Pin Function (2/3)
No.
A
51
52
53
54
55
56
57
58
59
60
B
61
62
63
64
65
66
67
68
69
70
71
C
72
73
74
75
76
77
78
79
80
81
D
82
83
84
85
86
87
88
89
90
91
E
92
93
94
95
96
97
98
99
100
F
140
1
2
Pin Name
Data bus
UD10
UD11 Data bus
VSS GND
UD12 Data bus
UD13 Data bus
UD14 Data bus
UD15 Data bus
VCC 3.3V power supply
D_TXD Communication with IC1207 (module microcomputer)
EXT_TXD Communication with the outside (program notes)
D_RXD Communication with IC1207 (module microcomputer)
EXT_RXD Communication with the outside (program notes)
D_CLK Communication with IC1207 (module microcomputer)
P60 NC terminal
VSS GND
CS_FLASH A flash memory control terminal
VSS GND
VSS GND
P61 NC terminal
UDREQ IC1703 (PE5064) control terminal
P63 NC terminal
WE_FLASH A flash memory note control signal (unused)
BUSY The command receipt of a message lye Norwich output
REQ_PU A communication demand to a module microcomputer
SEL23B IC1703 (PE5064) control terminal
CLRB IC1703 (PE5064) control terminal
FR_SEL The free run select signal output
RST31B The reset output to IC1301, IC1401 (PD6358)
RST23B The reset output to IC1703 (PE5064)
FWE Microcomputer program note control signal
RESET Reset input
NMI The at the rate of tang input (unused)
STBY The hardware standby input (unused)
VCC 3.3V power supply
XTAL A clock oscillation child connection terminal
EXTAL A clock oscillation child connection terminal
VSS GND
PF7 NC terminal
VCC 3.3V power supply
PF6 NC terminal
RDB A read control terminal from an outside slave device
HWRB A wright control terminal to an outside slave device
PF3 NC terminal
PF2 NC terminal
PF1 NC terminal
PF0 NC terminal
P50 NC terminal
P51 NC terminal
VSS GND
VSS GND
2
3
Function
PDP-503CMX
3
4
4