Sony STR-K7100 Service Manual - Page 50

Ic1907 Mb91353apmt-g-112e1 System Control Digital Board 2/3

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STR-K7100 IC1907 MB91353APMT-G-112E1 (SYSTEM CONTROL) (DIGITAL BOARD (2/3)) Pin No. Pin Name I/O Pin Description 1 HDMI MUTE I HDMI mute signal input Not used in this set. (Open) 2 HDMI RESET/HDMI PRE O HDMI reset signal output 3 XM RESET O XM reset signal output XMDACMDI/ 4 O XM D/A converter MDI signal output PCM1609 MDI XMDACMC/ 5 O XM D/A converter MC signal output PCM1609 MC 6 XMDACMS O XM D/A converter MS signal output 7 SUB T O Sub T signal output Not used in this set. (Open) 8 HP DETECT I Headphone detect signal input 9 POWER RY O Power relay control signal output 10 VOL CL O Volume serial clock signal output 11 VOL DA O Volume serial latch signal output 12 PROTECTOR I Protect control signal input 13 BRIDGEABLE RY O Bridgeable relay control signal output 14 FUSE DETECT I Fuse detect signal input 15 VOL ENCODER(B) UP I Volume encoder signal input (up) 16 VOL ENCODER(A) DOWN I Volume encoder signal input (down) 17 FRONT B RY O Front B speakers relay control signal output 18 GND - Ground pin 19 VCC - Power supply pin (+3.3 V) 20 INPUT ENCODER A I Input select encoder signal input A 21 INPUT ENCODER B I Input select encoder signal input B 22 SW RY O Sub woofer relay control signal output 23 HP RY O Headphone relay control signal output 24 C/REAR/SB RY O Center/surround speaker relay control signal output 25 FRONT RY O Front speaker relay control signal output 26 TUN DO I Tuner serial data signal input 27 TUN LAT O Tuner serial latch signal output 28 V MUTE O Video mute control signal output 29 V COMP SW2 O Video component select switch control signal output 2 30 V COMP SW1 O Video component select switch control signal output 1 31 V SW4 O Video input select switch control signal output 4 32 V SW3 O Video input select switch control signal output 3 33 V SW2 O Video input select switch control signal output 2 34 V SW1 O Video input select switch control signal output 1 35 TUNING ENCODER A I Tuning encoder signal input A Not used in this set. 36 TUNING ENCODER B I Tuning encoder signal input B Not used in this set. 37 PCM1609 RESET O A/D and D/A converters reset signal output 38 DIR XMODE O Digital audio interface receiver reset signal output 39 DIR CLK SEL O Digital audio interface receiver serial clock select signal output 40 VSS - Ground pin 41 TC74HC153A O Input select switch control signal output A 42 TC74HC153B O Input select switch control signal output B 43 VSS - Ground pin 44 VCC - Power supply pin (+3.3 V) 45 DIR CLK O Digital audio interface receiver serial clock signal output 46 DIR CE(LAT) O Digital audio interface receiver serial latch signal output 47 DIR DI O Digital audio interface receiver serial data signal output 48 DIR DO I Digital audio interface receiver serial data signal input 50

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50
STR-K7100
IC1907 MB91353APMT-G-112E1 (SYSTEM CONTROL) (DIGITAL BOARD (2/3))
Pin No.
Pin Name
I/O
Pin Description
1
HDMI MUTE
I
HDMI mute signal input
Not used in this set. (Open)
2
HDMI RESET/HDMI PRE
O
HDMI reset signal output
3
XM RESET
O
XM reset signal output
4
XMDACMDI/
O
XM D/A converter MDI signal output
PCM1609 MDI
5
XMDACMC/
O
XM D/A converter MC signal output
PCM1609 MC
6
XMDACMS
O
XM D/A converter MS signal output
7
SUB T
O
Sub T signal output
Not used in this set. (Open)
8
HP DETECT
I
Headphone detect signal input
9
POWER RY
O
Power relay control signal output
10
VOL CL
O
Volume serial clock signal output
11
VOL DA
O
Volume serial latch signal output
12
PROTECTOR
I
Protect control signal input
13
BRIDGEABLE RY
O
Bridgeable relay control signal output
14
FUSE DETECT
I
Fuse detect signal input
15
VOL ENCODER(B) UP
I
Volume encoder signal input (up)
16
VOL ENCODER(A) DOWN
I
Volume encoder signal input (down)
17
FRONT B RY
O
Front B speakers relay control signal output
18
GND
—
Ground pin
19
VCC
—
Power supply pin (+3.3 V)
20
INPUT ENCODER A
I
Input select encoder signal input A
21
INPUT ENCODER B
I
Input select encoder signal input B
22
SW RY
O
Sub woofer relay control signal output
23
HP RY
O
Headphone relay control signal output
24
C/REAR/SB RY
O
Center/surround speaker relay control signal output
25
FRONT RY
O
Front speaker relay control signal output
26
TUN DO
I
Tuner serial data signal input
27
TUN LAT
O
Tuner serial latch signal output
28
V MUTE
O
Video mute control signal output
29
V COMP SW2
O
Video component select switch control signal output 2
30
V COMP SW1
O
Video component select switch control signal output 1
31
V SW4
O
Video input select switch control signal output 4
32
V SW3
O
Video input select switch control signal output 3
33
V SW2
O
Video input select switch control signal output 2
34
V SW1
O
Video input select switch control signal output 1
35
TUNING ENCODER A
I
Tuning encoder signal input A
Not used in this set.
36
TUNING ENCODER B
I
Tuning encoder signal input B
Not used in this set.
37
PCM1609 RESET
O
A/D and D/A converters reset signal output
38
DIR XMODE
O
Digital audio interface receiver reset signal output
39
DIR CLK SEL
O
Digital audio interface receiver serial clock select signal output
40
VSS
—
Ground pin
41
TC74HC153A
O
Input select switch control signal output A
42
TC74HC153B
O
Input select switch control signal output B
43
VSS
—
Ground pin
44
VCC
—
Power supply pin (+3.3 V)
45
DIR CLK
O
Digital audio interface receiver serial clock signal output
46
DIR CE(LAT)
O
Digital audio interface receiver serial latch signal output
47
DIR DI
O
Digital audio interface receiver serial data signal output
48
DIR DO
I
Digital audio interface receiver serial data signal input