Sony UP-D70, Service Manual

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4-16 UP-D70/D70A (UC,CE)
Terminal Signal line name I/O Function
31 D0 I Data
32 RESET I Reset (High active)
33 NC
34 NC
35 nWR I Write signal
36 MDB7 I/O Main data bus
37 MDB6 I/O Main data bus
38 MDB5 I/O Main data bus
39 MDB4 I/O Main data bus
40 MDB3 I/O Main data bus
41 MDB2 I/O Main data bus
42 MDB1 I/O Main data bus
43 MDB0 I/O Main data bus
44 nRD I Read signal
c) PPI (IC106) Port map
Terminal Signal line name I/O Function
1 NC
2 nCS I Tip select
3 GND GND
4 A1 I Address
5 A0 I Address
6 nPQC_RESET O PQC IC reset
7 ALRM_LED O Alarm LED
8 FAN_MTR O Fan motor
9 SPLY_MTR0 O Supply motor
10 HED_MTR0 O Head motor
11 HED_MTR1 O Head motor
12 TKUP_MTR0 O Take-up motor
13 SPLY_MTR1 O Supply motor
14 HED_HOM_SENS I Head home sensor
15 HED_POS_SENS I Head position sensor