Sony PMC-MD55 Service Manual page 183

Pin No. Pin Name
51 SELECT
52 AVSS
53 AVREF
54 AVDD
55
LED-PRESET/AMS
56 LED-SELECT
57 LINE
58 LINE-LEVEL
59 KEY4
60 KEY3
61 KEY2
62 KEY1
63 R-MUTE
64 R-COUNT
65 R-CLK
66 R-DATA
67 R-CE
68 HI-SPEED
69 MD-SRXD
70 MD-STXD
71 to 73 NC
74 CD-CLK
75 CD-XLAT
76 CD-DATA
77 CD-SENSE1
78 CD-SCOR
79 CD-SQSO
80 CD-SHORT
81 CD-SQCK
82 CD-MUTE
83 CD-FOK
84 CD-SENSE2
85 RMC
86 TEX
87 TX
88 VSS
89 VDD
90 NC
91 CD-XRST
92 NC
93 SPEED-L
94 AU-DATA
I/O
I Destination setting terminal
—
Ground terminal (for A/D converter)
I
Reference voltage (+3.3V) input terminal (for A/D converter)
— Power supply terminal (+3.3V) (for A/D converter)
O LED drive signal output of the PRESET/AMS indicator (D553) "H": LED on
O LED drive signal output of the SELECT indicator (D554) "H": LED on
O Function select signal output for the line input signal "L": line in, "H": other function
O
Line in level control signal output
Key input terminal (A/D input) π (MD), fl MD, BAND RADIO, fl CD, π (CD),
I
CD OPEN/CLOSE 6, LINE/LINE IN keys input (S550 to S555 and S579)
Key input terminal (A/D input) DELETE, TUNE ¿ – 0, NO CANCEL, EDIT,
I
YES ENTER, DISPLAY, TUNE + ÷ ), INSERT keys input (S557 to S564)
Key input terminal (A/D input) VOL +/–, BASS/TREBLE, MEGA BASS, MD EJECT 6,
I
MONO/ST REPEAT, AUTO PRESET SHUF/PGM keys input (S565 to S571)
Key input terminal (A/D input) POWER, SLEEP, STANDBY, SYNCHRO REC CD " MD,
I
REC IT TO TOP/END, REC, HIGH SPEED keys input (S572 to S580)
O Muting on/off control signal output for the tuner signal "L": muting on
I PLL serial data input from the LC72137M (IC2)
O PLL serial data transfer clock signal output to the LC72137M (IC2)
O PLL serial data output to the LC72137M (IC2)
O PLL serial chip enable signal output to the LC72137M (IC2)
O High speed recording on/off control signal output "L": high speed recording
I UART communication data input from the MD mechanism controller (IC601)
O UART communication data output to the MD mechanism controller (IC601)
—
Not used (open)
O Serial data transfer clock signal output to the CXD3009Q (IC702)
O Serial data latch pulse signal output to the CXD3009Q (IC702)
O Serial data output to the CXD3009Q (IC702)
I Internal status (SENSE) input from the CXD3009Q (IC702)
I Subcode sync (S0+S1) detection signal input from the CXD3009Q (IC702)
I
Subcode Q data input from the CXD3009Q (IC702)
I
Detection signal input of supplied the power to CD block
O
Subcode Q data reading clock signal output to the CXD3009Q (IC702)
O Muting on/off control signal output for the CD playback signal "L": muting on
I
Focus OK signal input terminal Not used (open)
I Internal status (SENSE) input from the CXA2542AQ (IC701)
I Sircs remote control signal input from the remote control receiver (IC550)
O Sub system clock output terminal (32.768 kHz)
I Sub system clock input terminal (32.768 kHz)
—
Ground terminal
— Power supply terminal (+3.3V)
—
Not used (open)
O Reset signal output to the CXA2542AQ (IC701) and CXD3009Q (IC702) "L": reset
—
Not used (open)
O CD lid open/close motor (M703) drive signal output "L": open
O Serial data output to the electrical volume (IC351)
Description
"L": normal, "H": high
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