Sony MDX-C8970 Service Manual page 56

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