Sony MZ-N420D Service Manual page 50

MZ-N420D
Pin No. Pin Name
51 ADDT
52 KRCK
53 XBCK
54 FS256
55 NC
56 NC
57 LRCKI
58 XBCKI
59 DATAI
60 NC
61 EXCS
62, 63 NC
64 to 66 MNT0 to 2
67 MNT3
68 SENS
69 TX
70 RECP
71 EFMO
72 FMCK
73 OFTRK
74 XSKH
75 XSKL
76 DCLSOUTL
77 DCLSOUTR
78 to 85 TD0 to 7
86 TREQ
87 TACK
88 STOP_KEY
89 PROTECT
90 OPT_DET
91 XJACK_DET
92 XMIC_DET
93 OPEN_CLOSE_SW
94 XCS_ADC
95 XPD_ADC
96 XCHG_CTL
97 LCD_RST
98 XMUTE
99 XPATCH
100 SI0
101 SO0
102 SCK0
103 XGUM_ON
104 BEEP
105 XOPT_CTL
106 XHP_STBY
107 AOUT_SEL
108 REC_OPR_LED
109 NC
110 NC
50
I/O
I Data input from the external A/D converter (fixed at "L" in this set)
O L/R sampling clock (44.1KHz) output to the external A/D converter Not used (open)
O Bit clock (2.8224MHz) output to the external A/D converter Not used (open)
O 11.2896MHz clock output
O Filter cutoff control signal output Not used (open)
I Clock input from the external VCO Not used (open)
I Input terminal for the PCM data I/F/ ATRAC data I/F Not used (open)
I Input terminal for the PCM data I/F/ ATRAC data I/F Not used (open)
I Input terminal for the PCM data I/F/ ATRAC data I/F Not used (open)
— Not used (open)
O Chip select signal output teminal for the external SDRAM Not used (open)
— Not used (open)
O DSP monitor (0) to (2) output terminal Not used (open)
O DSP monitor (3) output terminal
O DSP internal status (DSP SENS monitor) signal output terminal Not used (open)
O Record data output enable signal output Not used (open)
O Laser power changeover signal output Not used (open)
O EFM encode data output for the record to the REC driver
I FMCK signal input Not used (connected to the ground)
I/O Tracking signal input/output Not used (open)
O L circuit signal output Not used (open)
O K-SHOCK circuit signal output Not used (open)
O PWM modulator signal output for the D class headphone amplifier Not used (open)
O PWM modulator signal output for the D class headphone amplifier Not used (open)
— TigerI/F data 0 to 7 terminal Not used (open)
— TigerI/F REQUEST terminal Not used (connected to the ground)
— TigerI/F ACK terminal
I Stop key detection input terminal from the switch & liquid crystal display module Not used (open)
I Detection signal input terminal of the record check claw from the protect detection switch "H": protect
I DIN plug detection signal input "H": DIN plug detect Not used (open)
I LINE IN plug detection signal input "L": LINE or OPT plug detect Not used (open)
I Microphone plug detection signal input "L": microphone plug detect Not used (open)
I Open/close detection switch of the upper panel input terminal
O Chip select signal output to the A/D converter Not used (open)
O Power supply control signal output to the A/D converter Not used (open)
O Charge ON/OFF control signal output Not used (open)
O Reset control signal output to the liquid crystal display module
O Analog muting control signal output to the headphone amplifier "L": muting ON Not used (open)
I Patch function detection terminal "L": patch function (fixed at "L" in this set)
I Serial data input from the nonvolatile memory
O Serial data output to the nonvolatile memory, liquid crystal display module and power control
O Serial clock output to the nonvolatile memory, liquid crystal display module and power control
I Rechargeable battery detection switch input terminal "L": rechargeable battery in detect Not used (open)
O Beep sound control signal output to the headphone amplifier Not used (open)
O Power supply ON/OFF control signal output for the DIN PD drive Not used (open)
O Power supply control signal output to the headphone amplifier Not used (open)
O HP/LINE changeover signal output to the headphone amplifier Not used (open)
O LED ON/OFF control signal output for the REC display Not used (open)
O Power supply control signal output for the OP modulation Not used (open)
O Power supply control signal output for the OP laser Not used (open)
Description
Not used (connected to the ground)
"L": when upper panel close