Sony HCD-ZX50MD, Service Manual, Page: 95 / 136

95
Pin Name I/O
41 TE I Tracking error signal input
42 CE I Center servo analog input
43 RFDC I RF signal input
44 ADI0 O Test pin (Not used)
45 AVSS0 — Analog ground
46 IGEN I Power supply pin operational amplifiers
47 AVDD — Analog power supply
48 ASYO O EFM full swing output
49 ASYI I Asymmetry comparate voltage input
50 RFAC I EFM signal input
51 AVSS1 — Analog ground
52 CLTV I Control voltage input for master VCO
53 FILO O Filter output for master PLL
54 FILI I Filter input for master PLL
55 PCO O Charge-pump output for master PLL
56 AVDD1 — Analog power supply
57 BIAS I Asymmetry circuit constant current input
58 VCTL I Control voltage input for variable pitch PLL
59 V16M I/O 16.9344MHz output (Not used)
60 VPCO O Charge-pump output for variable pitch PLL (Not used)
61 DVDD2 — Digital power supply
62 ASYE I Asymmetry circuit ON/OFF (Connected to +5V.)
63 MD2 I Digital-out ON/OFF control (Connected to +5V.)
64 DOUT O Digital-out output
65 LRCK O 48-bit slot D/A interface, LR clock output
66 PCMD O 48-bit slot D/A interface, Serial deta output
67 BCLK O 48-bit slot D/A interface, bit clock output
68 EMPH O Playback disc output in emphasis mode (Not used)
69 XTSL I X’tal selection input pin
70 DVSS2 — Digital ground
71 XTAI I X’tal oscillator circuit input
72 XTAO O X’tal oscillator circuit output (Not used)
73 SOUT O
74 SOCK O (Not used)
75 XOCT O
76 SQSO O Sub-Q serial output
77 SQCK I Clock input for SQSO read-out
78 SCSY I Sub-code input
79 SBSO O Sub-P through Sub-W serial output (Not used)
80 EXCR I Clock input for SBSO read-out
Pin No. Function