Read Sony STR-DE875 / STR-DE975 Service Manual online
33
STR-DE875/DE975
3-21.
IC PIN FUNCTION DESCRIPTION
• IC1101 MB91154PMT2-G-101-E1 (SYSTEM CONTROLLER) (MAIN BOARD)
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
I/O
O
O
O
O
O
O
I
I
—
I
I
I
I
I
O
O
O
O
O
I
I
O
I
I
O
—
—
I
O
O
O
I
O
O
O
O
—
—
—
—
O
O
O
—
O
O
I
I
I
O
Pin Name
2ND_RY
2ND_LAT
2ND_CLK
2ND_DATA
LED_DRV_CL
LED_DRV_CE
CURSOR_JOG_3A
CURSOR_JOG_3B
VSS
FUNCTION_JOG_1A
FUNCTION_JOG_1B
VOL_JOG_2B
VOL_JOG_2A
SPK_SEL
HP_RY
SP_A_RY
CENTER_RY
REAR_RY
WOOFER_RY
PROTECTOR
HP_CTRL
PW_RY
TUNER_STEREO
TUNER_AUTO_STOP
TUNER_MUTE
VSS
VCC
TUNER_DO
TUNER_SERIAL_CLK
T.DATA
T.LAT
RDS_DATA
V.SW1
V.SW2
V.SW3
V.SW4
P61
P62
P63
P64/A20
SUB-T
TC74HC153_A
DIR XMODE
VSS
DIR CKSEL1
DIR CLK
DSP1.HDOUT1
DSP1.PLL1
DSP2.GP3
DSP2.EXLOCK
Description
2nd audio relay control signal output
2nd audio switching IC latch signal output
Serial command clock signal output
Serial command data signal output
LED driver clear signal output
LED driver latch signal output
Jog dial signal input from the rotary encoder
Jog dial signal input from the rotary encoder
Ground
Jog dial signal input from the rotary encoder
Jog dial signal input from the rotary encoder
Volume signal input from the rotary encoder
Volume signal input from the rotary encoder
Speaker ON/OFF switch signal input
Headphone relay control signal output
Front speaker relay control signal output
Center speaker relay control signal output
Rear speaker relay control signal output
Sub woofer relay control signal output
Protector status detect signal input
Headphone switch detect signal input
Power relay control signal output
Stereo tuning signal input from the tuner
Tuner auto stop signal input from the tuner
Muting signal output to the tuner
Ground
Power supply
Frequency data signal input from the tuner
Clock signal output to the tuner
Data signal output to the tuner
Latch signal output to the tuner
RDS data signal input from the tuner
Video switch 1 control signal output
Video switch 2 control signal output
Video switch 3 control signal output
Video switch 4 control signal output
Connected to ground
Connected to ground
Connected to ground
Connected to ground
Sub-trans control signal output
Digital select (IC TC74HC153) control signal output
XMODE signal output to DIR
Ground
CKSEL1 signal output to DIR
Clock signal output to DIR
HDOUT1 signal input from DSP1
PLL1 signal input from DSP1
GP3 signal input from DSP2
EXLOCK signal output to DSP2
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