Sony WX-C570R, Service Manual

Page: 35 / 70

– 39 –
6-4. IC PIN DESCRIPTIONS
• IC401
µ
PD78054GC-484-3B9 (CD SYSTEM CONTROL)
Pin No. Pin Name I/O Pin Description
1 – 3 NCO I Not used.
4 AVSS — GND for A/D conversion.
5, 6 NCO O Not used.
7 AVREF — Reference voltage power supply for D/A conversion. (+5 V)
8 – 15 NCO O Not used.
16 UNISI I Serial data input (for SONY BUS)
17 UNISO O Serial data output (for SONY BUS)
18 UNICKI I Serial clock input (for SONY BUS)
19 LINKOFF O Link off output
20 NCO O Not used.
21 CDMON O CD mechanism power control output
22 CD-ON O CD power control output
23 – 26 NCO O Not used.
27 CDMUT O CD mute control output
28 EMPHON O Emphasis control output
29 CDRST O CD signal process IC reset output
30 – 32 NCO I Not used.
33 VSS — Microcomputer GND
34 TBTGSEL I CD traverse/tracking gain automatic adjustment select input
35 NCO I Not used.
36 – 38 DBCNT3 – 1 O D-BASS (Digital Bass Boost) IC control output 3 – 1
39 DB RST O D-BASS (Digital Bass Boost) IC reset output
40 GFS I GFS signal detection input
41 SQ SI I SUB Q data input
42 SQ CKO O SUB Q clock output
43 NCO I Not used.
44 CD SO O CD signal process serial data output
45 CD LAT O CD signal process latch output
46 CD CKO O CD signal process serial clock output
47 NCO I Not used.
48 F OK I Focus signal detection input
49 LDON O Laser ON/OFF control output
50 DSW I DOWN switch detection input
51 IN SW I Disc insert detection input
52 LSW I Sled limit switch detection input
53 LMLOD O Loading motor control output (Loading direction)
54 LMEJ O Loading motor control output (Eject direction)
55 NCO I Not used.
56 CTL1 O Driver IC control output 1
57 – 59 NCO O Not used.
60 RST — Reset input
61 SCOR I SCOR signal detection input
62 CNIN I Track jump number count input
63 SELFSW I Disc self store detection input
64 SENS I SENS signal detection input
65 NCO O Not used.
66 BUIN I Backup power detection input
67 BUSON I BUS ON control input
68 VDD — Microcomputer power supply
69 X2 — Main oscillator output (5 MHz)
70 X1 — Main oscillator input (5 MHz)
www. xiaoyu163. com
QQ 376315150
9 9
2
8 9
4 2
9 8
TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com