Sony MDX-C8500R, Service Manual

Page: 54 / 108

54
Pin No. Pin Name I/O Description
35 DSPLAT O Serial data latch pulse output to the CXD2726Q (IC805)
36 DSPRST O Reset signal output to the CXD2726Q (IC805) “L”: reset
37 ANT CUT
O
Tuner system power supply on/off control signal output terminal “H”: tuner power on
Not used (open)
38 DVCC —
Power supply terminal (+5V) (for D/A converter)
39 DVSS —
Ground terminal (for D/A converter)
40, 41 NC O
Not used (open)
42 AVCC
— Power supply terminal (+5V) (for analog system)
43 AVRH
I Reference voltage (+5V) input terminal (for A/D converter)
44 AVRL
I Reference voltage (0V) input terminal (for A/D converter)
45 AVSS
— Ground terminal (for analog system)
46 KEYIN0
I
Key input terminal (A/D input) (LSW901 to LSW908, S901 to S904)
OFF, SOURCE, SOUND EQ, MENU, PTY DSPL (MDX-C8500R), DSPL (MDX-C8500X),
LIST, ENTER, MODE, SEEK/AMS -
. m + > M , DISC/PRST +, PRST/DISC - keys
input
47 KEYIN1 I
Key input terminal (A/D input) (LSW751, LSW909 to LSW917)
Z , DSO, TA, AF, 6 to 3 SHUF 2, REP 1 keys input
(LSW910 TA, LSW911 AF: MDX-C8500R ONLY)
48 RCIN0
I Rotary remote commander key input terminal (A/D input)
49 DSTSEL I
Destination setting terminal (A/D input) “L”: MDX-C8500X/C8500R (TYPE A),
“M”: MDX-C8500R (TYPE C), “H”: MDX-C8500R (TYPE B)
50 QUALITY
I Noise level detection signal input at SEEK mode (A/D input)
51
FMAGC I
FM AGC detection signal input from the FM/AM tuner unit (TUX201) (A/D input)
52 MTP
I
Multi-path detection signal input from the RDS decoder (IC201) (A/D input)
Used for the MDX-C8500R only (MDX-C8500X: Not used open))
53
VSM I
FM and AM signal meter voltage detection input from the FM/AM tuner unit (TUX201)
(A/D input)
54 VCC —
Power supply terminal (+5V)
55 AMPON
O
Standby on/off control signal output terminal
“L”: standby mode, “H”: amplifier on
56 NS-MASK O
Discharge control signal output for the noise detection circuit “H”: discharge
Used for the MDX-C8500R only (MDX-C8500X: Not used open))
57 MTLOUT O
METAL output terminal (METAL on at “L” output) Not used (open)
58 REEL I
Rotation detect signal input terminal Not used (fixed at “L”)
59 POS0 I
60 POS1 I
61 POS2 I
62 POS3 I
63 VSS —
Ground terminal
64 NC I
Not used (fixed at “L”)
65 F OSC I
Frequency count terminal from power control (IC302)
66 LM-LOD O
Loading motor control signal output terminal “H” active
(For the loading direction and forward side operation) Not used (open)
67 CM ON O
Capstan/reel motor control signal output terminal “H”: motor on Not used (open)
68 TAPE ON O
Tape system power supply on/off control signal output terminal “H”: tape on Not used (open)
69
FLASH-W
I
Internal flash memory data write mode detection signal input terminal Not used
70 I2C SDA I/O
Two-way data I2C bus with the FM/AM tuner unit (TUX201), RDS decoder (IC201) and
electrical volume (IC301) (RDS decoder is MDX-C8500R only)
71 I2C CKO O
I2C bus clock signal output to the FM/AM tuner unit (TUX201), RDS decoder (IC201) and
electrical volume (IC301) (RDS decoder is MDX-C8500R only)
Tape position (EJECT/FF/REW/REV/
FWD mode) detect input from the tape
operation switch on the deck mechanism
Not used this function (fixed at “L”)
POS0: “L”: EJECT mode, “H”: others mode
POS1: “L”: FF and FWD mode, “H”: others mode
POS2: “L”: REW mode, “H”: others mode
POS3: “L”: REV and EJECT mode, “H”: others mode