Sony WX-C55 Service Manual page 27

• IC801 µPD78054GC-A32-8BT (CD SYSTEM CONTROL)
Pin No. Pin Name
1 LEDCLK
2 LEDCKO
3 LEDSO
4 AVSS
5 FL-CE0
6 FL-CE1
7 AVREF1
8 FL-RST
9 FL-SO
10 FL-CKO
11 SRDT
12 NCO
13 SCLK
14 FL-BLK
15 NIL
16 UNISI
17 UNISO
18 UNICKI
19 LINKOFF
20 ILLON
21 CMDON
22 CD-ON
23 SP-SEL
24 SP-C
25 SP-B
26 SP-A
27 CDMUT
28 EMPH-O
29 CD-RST
30 XMODE
31, 32 NIL
33 VSS
34 TBTGSEL
35 – 39 NIL
40 GFS
41 SQ-SI
42 SQ-CKO
43 NIL
44 CD-SO
45 CD-LAT
46 CD-CKO
47 PH2
48 F-OK
49 LD-ON
50 D-SW
51 PH1
52 L-SW
53 LM-LOD
54 LM-EJ
55 PH3
56 CTL1
57 NCO
I/O
— Not used in this set.
— Not used in this set.
— Not used in this set.
— Analog ground
O Display driver chip select output 0
O Display driver chip select output 1 (Not used in this set.)
— Reference power supply for D/A conversion.
O Display driver reset output (Not used in this set.)
O Display driver data output
O Display driver clock output
— Not used in this set.
— Not used.
— Not used in this set.
O Display driver blank control output
— Not used. (Connect to ground in this set.)
I Uni-link serial interface data input
O Uni-link serial interface data output
I Uni-link serial interface clock input
O Link off output
O Illumination power supply control output
O CD mechanism power supply control output
O CD power supply control output
O Signal (L/R channel) select control signal output to spectrum analyzer control IC.
O Frequency select control signal output to spectrum analyzer control IC.
O Frequency select control signal output to spectrum analyzer control IC.
O Frequency select control signal output to spectrum analyzer control IC.
O CD mute control output
O Emphasis control output
O CD signal process IC reset output
— Not used in this set.
— Not used. (Connect to ground in this set.)
— Ground
I CD tracking balance, tracking gain auto adjustment select input.
— Not used. (Connect to ground in this set.)
I GFS signal detection input
I SUB Q data input
O SUB Q clock output
— Not used. (Connect to ground in this set.)
O CD signal process serial data output
O CD signal process latch output
O CD signal process serial clock output
I 8/12 cm disc detection input
I Focus signal detection input
O Laser on/off select control output
I Down switch detection input
I Disc insert detection input
I Sled limit switch input
O Loading motor control output (Loading direction)
O Loading motor control output (Eject direction)
I Disc detect sensor input
O Driver IC control output
— Not used.
Pin Description
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