Sony HCD-M80, Service Manual

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45
HCD-M80
Pin No. Pin Name I/O Description
59 to 66
DRDAT8 to
DRDAT15
I/O
Two-way data bus with the D-RAM Data output to the program ROM
67 IVS4 —
Ground terminal (for I/O)
68 DRCAS O
Column address strobe signal output to the D-RAM
69 LVD4 —
Digital power supply terminal (+2.5V) (for AV decoder block)
70 DRCK O
Clock signal output to the D-RAM
71 IVD5 —
Power supply terminal (+3.3V) (for I/O)
72 DRRAS O
Row address strobe signal output to the D-RAM
73 DRWEL O
Write enable signal output to the D-RAM
74 NVOEL O
Chip select signal output to the D-RAM
75 LVS4 —
Digital ground terminal (for AV decoder block)
76 DRBS O
Bank select signal output to the D-RAM
77, 78
DRDQM0,
DRDQM1
O Mask control signal output to the D-RAM
79 IVS5 — Ground terminal (for I/O)
80 RESERVE — Not used
81 SYSRST I Reset signal input from the system controller “L”: reset
82 IRDIN I IR data input terminal Not used
83 RESERVE —
Not used
84 VDD1 —
Digital power supply terminal (+2.5V) (for CD-DSP block)
85 V16M O
Wide-band EFM PLL VCO2 oscillation output terminal Not used
86 DOUT O
Digital audio signal output terminal Not used
87 L CDLRCK I
L/R sampling clock signal (44.1 kHz) input
88 LRCK O
L/R sampling clock signal (44.1 kHz) output
89 VSS1 —
Digital ground terminal
90 L CDDATA I
Serial data input
91 PCMD O
Serial data output
92 L CDBCK I
Bit clock signal (2.8224 MHz) input
93 BCK O
Bit clock signal (2.8224 MHz) output
94 EMPH O
“L” is output when playback disc is emphasis off
“H” is output when playback disc is emphasis on Not used
95 L SQSO I
Subcode-Q 80-bit, PCM peak and level data, CD text data input
96 SQSO O
Subcode-Q 80-bit, PCM peak and level data, CD text data output
97 VDD2 —
Digital power supply terminal (+2.5V) (for CD-DSP block)
98 L SQCK O SQSO readout clock signal output
99 SQCK I SQSO readout clock signal input
100 SBSO O Subcode P to W serial data output terminal Not used
101 EXCK I SBSO readout clock signal input terminal Not used
102 DATA I Serial data input
103 L DDAT O Serial data output
104 VSS2 — Digital ground terminal
105 L CDXRST O
Reset signal output “L”: reset
106 XRST I
Reset signal input “L”: reset
107 MUTE I
Muting on/off control signal input terminal “H”: muting on Not used
108 L XLAT O
Serial data latch pulse signal output