Sony MDX-C8970, Руководство по обслуживанию

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56
Pin No. Pin Name I/O Description
33
VSS
—
Ground terminal
34 C —
Connected to coupling capacitor for the power supply
35 RAMBU I
Internal RAM reset detection signal input from the RN5VD33AA-TL (IC507)
Input terminal to check that RAM data are not destroyed due to low voltage
This checking is made within 100 msec after reset
36 MUTE
O Audio line muting on/off control signal output terminal “H”: muting on
37 AUDIO SEL0
O Analog signal source selection output to the CXD2727Q (IC300)
38 DVCC —
Power supply terminal (+5V) (for D/A converter)
39 DVSS —
Ground terminal (for D/A converter)
40 AUDIO SEL1
O Analog signal source selection output to the CXD2727Q (IC300)
41 LCDANG
O
View field angle control signal is output when front panel is fully opened
“H”: front panel is fully opened
42 AVCC
— Power supply terminal (+5V) (for A/D converter)
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 A/D converter)
46
VSM
(S-METER)
I
FM and AM signal meter voltage detection input from the FM/AM tuner unit (TU101)
(A/D input)
47 KEY-IN0
I
Key input terminal (A/D input) (LSW900, S900, LSW901 to LSW904, LSW906)
OFF, SEEK/AMS
+ )
+
= 0
– , SOURCE, SHIFT, MODE, SOUND, DSPL keys
input
48 KEY-IN1 I
Key input terminal (A/D input) (LSW902, LSW905, LSW909 to LSW918)
6
, LIST, 10 to 3 keys input
49 RC-IN0
I Rotary remote commander key input terminal (A/D input)
50 DSTSEL0 I
Destination setting terminal (fixed at “L”)
51 DSTSEL1 I
Destination setting terminal (fixed at “H”)
52, 53 NCO O
Not used (open)
54 VCC —
Power supply terminal (+5V)
55 VOL LOAD
O Serial data latch pulse output to the electrical volume (IC602, IC632)
56 VOL DATA L
O Setting data output (L-ch) to the electrical volume (IC602)
57 VOL DATA R
O Setting data output (R-ch) to the electrical volume (IC632)
58 VOL CLK
O Serial clock signal output to the electrical volume (IC602, IC632)
59 DSP XLAT
O Serial data latch pulse signal output to the CXD2727Q (IC300)
60 RC-IN1
I Rotary remote commander shift key input terminal “L”: shift
61 ACC IN
I Accessory detect signal input terminal “L”: accessory on
62 POW-ON
O Main system power supply on/off control signal output “H”: power on
63 VSS —
Ground terminal
64 BOOT O
Serial data output to the liquid crystal display drive controller (IC701)
“L” is output when writing change
65 PWM IN
I Power supply control signal input from the power control (IC871)
66, 67 NCO O
Not used (open)
68 CD/MD I
Setting for the internal mechanism CD or MD
“L”: CD, “H”: MD (fixed at “H” in this set)
69 CD/MD ON I CD/MD servo power supply input detect terminal
70 I2C-SDA I/O Two-way data bus with the FM/AM PLL (IC151)
71 I2C-SCL O Serial clock signal output to the FM/AM PLL (IC151)
72 SHIFT OUT O Shift clock control signal output of the power control (IC871)
73 X1A O Sub system clock output terminal (32.768 kHz)