Pioneer CDX-P670, Service Manual

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48
CDX-P670
Pin No. Pin Name I/O Format Function and Operation
65–68 A6-A3 O C SRAM address bus output
69 A10 O C SRAM address bus output
70 A2 & (EPSK) O C SRAM address bus output and (E2PROM clock output)
71 A1 & (EPDI) O/I C SRAM address bus output and (E2PROM data input)
72 A0 & (EPDO) O C SRAM address bus output and (E2PROM data output)
73
asensfm
I Pull up
74
ejsw
I Eject key switch interrupt input
75
mag
I Magazine lock switch interrupt input
76 CDMUTE O C CD mute output
77 NC Not used
78 I13 O C Motor driver control output
79 I2 O C Motor driver control output
80 I4 O C Motor driver control output
81–88 D0-D7 I/O C SRAM data bus input/output
89,90 NC Not used
91 DSP I DISC detect timing input
92
disk
Disc detector input
93 ELVPVO Voltage input from ELV position sense
94 ELVREF ELV reference voltage input
95 TRP I Tray position input
96 AVSS A/D GND
97 VDIN Power supply short sensor input
98 VREF I A/D converter reference voltage input
99 AVCC A/D VCC
100 EPCS I/O C E2PROM detect input , Chip select output
*PD5638A
Format Meaning
C C MOS
30
31
50
51
80
81
100
1
LC35256FT-70U
1 2 3 4 5 6 7 8 9
10 11 12 13 14
28 27 26 25 24 23 22 21 20 19 18 17 16 15
A14 A12
A7 A6 A5 A4 A3 A2 A1 A0
IO1 IO2 IO3
GND
VDD WE A13 A8 A9 A11 OE A10 CS IO8 IO7 IO6 IO5 IO4
A0-A14 : Address input
IO1-IO8 : Data input/output
VDD : Power supply
GND : GND
CS: Chip select
OE : Output enable
WE : Write enable
TC7SH32F
1 IN B
2 IN A
3 GND
4 OUT Y
5 VCC
IC's marked by* are MOS type.
Be careful in handling them because they are very
liable to be damaged by electrostatic induction.