Pioneer CDX-P1270 Service Repair Training page 48

CDX-P1270
Pin No. Pin Name
65–68 A6-A3
69 A10
70 A2 & (EPSK)
71 A1 & (EPDI)
72 A0 & (EPDO)
asensfm
73
ejsw
74
mag
75
76 CDMUTE
77 NC
78 I13
79 I2
80 I4
81–88 D0-D7
89,90 NC
91 DSP
disk
92
93 ELVPVO
94 ELVREF
95 TRP
96 AVSS
97 VDIN
98 VREF
99 AVCC
100 EPCS
*PD5638A
80
81
100
1
LC35256FT-70U
A0-A14 : Address input
IO1-IO8 : Data input/output
CS: Chip select
48
I/O Format Function and Operation
O C SRAM address bus output
O C SRAM address bus output
O C SRAM address bus output and (E2PROM clock output)
O/I C SRAM address bus output and (E2PROM data input)
O C SRAM address bus output and (E2PROM data output)
I Pull up
I Eject key switch interrupt input
I Magazine lock switch interrupt input
O C CD mute output
Not used
O C Motor driver control output
O C Motor driver control output
O C Motor driver control output
I/O C SRAM data bus input/output
Not used
I DISC detect timing input
Disc detector input
Voltage input from ELV position sense
ELV reference voltage input
I Tray position input
A/D GND
Power supply short sensor input
I A/D converter reference voltage input
A/D VCC
I/O C E2PROM detect input , Chip select output
51
50
31
30
OE : Output enable
WE : Write enable
VDD : Power supply
GND : GND
Format
C
IC's marked by* are MOS type.
Be careful in handling them because they are very
liable to be damaged by electrostatic induction.
TC7SH32F
1 IN B
2 IN A
3 GND
Meaning
C MOS
5 VCC
4 OUT Y