Pioneer CDX-FM1257, Service Manual

Page: 47 / 62

47
CDX-FM1259,FM1257
Pin No. Pin Name I/O Format Function and Operation
63 A7 O C SRAM address bus output
64 VSS GND
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 Select FM=”ASENS”
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
89 PREN O C Preemphasis select output
90 PLCS O C PLL chip select output
91 DSP I DISC detect timing input
92
disk
Disc detector input
93 ELVPVO I Voltage input from ELV position sense
94 ELVREF I ELV reference voltage input
95 TRP I Tray position input
96 AVSS I 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
*PD5513A
20
21
40
41 60
61
80
1
Format Meaning
C C MOS
NM Middle resistivity
N channel open drain
TC7SH32FU
1 IN B
2 IN A
3 GND
4 OUT Y
5 VCC
1 30
51 80
100
81 50
31