Sony CDX-GT930UI / CDX-GT937UI / CDX-GT980UI Service Manual ▷ View online
CDX-GT930UI/GT937UI/GT980UI
37
• IC Pin Function Description
MAIN BOARD IC303 R5F3640MDZ99FB (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Description
1
DST SEL0
I
Destination setting pin 0
2
FSW IN
I
D/D converter oscillator frequency count control signal input
3
UNI SO
O
SONY bus serial data signal output
4
UNI SI
I
SONY bus serial data signal input
5
UNI CKO
O
SONY bus serial clock signal output
6
BYTE
I
Connect to ground. (Fixed to “L”.)
7
CNVSS
I
Port for fl ash write H (Write switch) Normally operation: “L”
8
XCIN
I
Sub clock signal input (32.768 kHz)
9
XCOUT
O
Sub clock signal output (32.768 kHz)
10
RESET
I
Reset signal input
11
XOUT
O
Main clock signal output (6 MHz)
12
VSS
—
Ground pin
13
XIN
I
Main clock signal input (6 MHz)
14
VCC1
—
Power supply pin (+3.3 V)
15
NMI
I
Non-maskable interruption signal input Fixed to “H” for external pull-up resistor.
16
CDM ON
I
CD mechanism deck power supply control request signal input
17
DAVN
I
AEP, UK model: RDS (Radio data system) data block synchronized detect signal input
Except AEP, UK model: Not used in this set. (Pull down)
Except AEP, UK model: Not used in this set. (Pull down)
18
CLKOUT SEL1
I
Clock out select signal input 1
19
CLKOUT SEL2
I
Clock out select signal input 2
20
BEEP
O
Beep signal output
21
TUNER ATT
O
Tuner mute signal output
22
ZAPPIN
O
Beep signal output
23
EESIO (TU)
I/O
Tuner EEPROM serial data signal input/output (Not used in this set.)
24
EECKO (TU)
O
Tuner EEPROM serial clock signal output (Not used in this set.)
25
ATT
O
Mute signal output
26
NC
O
Not used. (Open)
27
I2C CKO
O
I2C bus serial clock signal output
28
I2C SIO
I/O
I2C bus serial data signal input/output
29
DISP SO/TX
O
Display serial data signal output/Flash write data signal output
30
DISP SI/RX
I
Display serial data signal input/Flash write data signal input
31
DISP CLK/CLK
O
Display serial clock signal output/Flash write clock signal output
32
BUSY
O
Flash write busy signal output Normally operation: “L”
33
CD TX
O
CD MC-bus data signal output
34
CD RX
I
CD MC-bus data signal input
35
E CLK
O
Spectrum analyzer serial clock signal output
36
E DATA
O
Spectrum analyzer serial data signal output
37
CLKOUT
O
Clock signal output
38
EXTATT XEN
O
CD mechanism mute control signal output “L”: valid CD mechanism mute.
39
HOLD
I
External data bus (HOLD) signal input Fixed to “L” for external pull-down resistor.
40
AMP DIAG
I
Amplifi er self-diagnostic test function signal input
41
AMP STB
O
Amplifi er standby signal output
42
NC
O
Not used. (Open)
43
VBUS IN
I
USB power supply request signal input “H”: USB power ON.
44
WRI/WR
I
External data bus (WRI/WR) signal input Fixed to “H” for external pull-up resistor.
45
WAKE UP OUT
O
CD mechanism wake up signal output
46
OPEN REQ
I
CD mechanism open request signal input
47
EJECT OK
O
CD mechanism eject control signal output
48
NC
O
Not used. (Open)
49
CD ON
I
CD servo power supply on/off control signal input
50
Z DET
I
CD zero mute signal input “H”: ATT on
51
ILL IN
I
Illumination detect signal input
52
ACC IN
I
Accessory detect signal input
CDX-GT930UI/GT937UI/GT980UI
38
Pin No.
Pin Name
I/O
Description
53
TEL ATT
I
Telephone mute detect signal input
54
TEST IN
I
Test mode detect signal input
55
RC IN1
I
Rotary commander shift key signal input
56
SYSRESET
O
System reset signal output
57
BUS ON
O
Bus on signal output
58
FSW OUT
O
D/D converter oscillator frequency change signal output
59
B OUT SEL
I
Black out setting signal input “H”: Black out
60
VCC2
—
Power supply pin (+3.3 V)
61
NC
O
Not used. (Open)
62
VSS
—
Ground pin
63
MOTOR ON
O
Front panel motor drive power supply switch signal output
64
MOT–
O
Front panel open/close control signal output (Motor close)
65
MOT+
O
Front panel open/close control signal output (Motor open)
66
CLOSE SW
I
Front panel close detect signal input
67
OPEN SW
I
Front panel open detect signal input
68
P SNSR
I
Drive mechanism gear rotary information signal input
69
USB ON
O
USB power supply oscillator on/off signal output “H”: USB on
70
DST SEL1
I
Destination setting pin 1
71
DST SEL2
I
Destination setting pin 2
72
FL ON
O
Fluorescent indicator tube power supply on/off signal output
73
BU IN
I
Backup power supply detect signal input
74
FLD ON
O
Fluorescent indicator tube driver power supply on/off signal output
75
HS EN
O
USB high side switch control signal output
76
HS OC
I
USB high side switch overcurrent detection signal input
77
RE 1
I
Rotary encoder signal input 1
78
RE 0
I
Rotary encoder signal input 0
79
FP IDET
I
Front panel overcurrent detection signal input
80
TEMP TR
I
Temperature detect signal input
81, 82
NC
O
Not used. (Open)
83
VSM
I
S meter voltage signal input
84
KEY IN0
I
Key signal input 0
85
SP IN
I
Spectrum analyzer signal input from electronic volume
86
RC IN0
I
Rotary commander signal input 0
87
KEY ACK2
I
Rotary commander acknowledge signal input 2
88
KEY ACK0
I
Key acknowledge signal input 0
89
NC
O
Not used. (Open)
90
DISP RESET
O
Reset signal output to display IC
91
NOSE SW
I
Front panel detect signal input
92
NC
O
Not used. (Open)
93
DISP CE
O
Chip enable signal output for display IC
94
AVSS
—
Ground pin
95
DOOR IND
O
Sub panel LED power supply control signal output
96
VREF
—
Reference voltage pin for A/D converter
97
AVCC
—
Power supply pin (+3.3 V)
98 to 100
NC
O
Not used. (Open)
CDX-GT930UI/GT937UI/GT980UI
39
Pin No.
Pin Name
I/O
Description
1
SYS CE
I
Main chip enable signal input
2
NC
O
Not used. (Open)
3
VDC0
—
Connect to capacitor
4
NC
I
Not used. (Fixed to “L” for external pull-down resistor.)
5
VDC1
—
Connect to capacitor
6
NSD
I/O
Port pin
7
CNVSS
I
Port for fl ash write H (write switch) Normally operation: “L”
8, 9
NC
O
Not used. (Open)
10
RESET
I
Reset signal input
11
XOUT
O
Main clock signal output (8 MHz)
12
VSS
—
Ground pin
13
XIN
I
Main clock signal input (8 MHz)
14
VCC1
—
Power supply pin (+3.3 V)
15
NMI
I
Non-maskable interruption signal input Fixed to “H” for external pull-up resistor.
16 to 18
NC
O
Not used. (Open)
19
GCP TA4 IN
I
Fluorescent indicator tube GCP TA4 signal input
20, 21
NC
O
Not used. (Open)
22
BK TA3 OUT
O
Fluorescent indicator tube BK TA3 signal output
23
NC
O
Not used. (Open)
24
LAT TA2 OUT
O
Fluorescent indicator tube latch TA2 signal output
25 to 27
NC
O
Not used. (Open)
28
GCP TA0 OUT
O
Fluorescent indicator tube GCP TA0 signal output
29
SYS SO
O
Main serial data signal output
30
SYS SI
I
Main serial data signal input
31
SYS CLK
I
Main serial clock signal input
32
BUSY
O
Busy signal output for fl ash write Normally operation: “L”
33
FL DAT1
O
Fluorescent indicator tube serial data signal output 1
34
NC
O
Not used. (Open)
35
FL CLK IN
I
Fluorescent indicator tube serial clock signal input
36 to 38
NC
O
Not used. (Open)
39
HOLD
I
External data bus (Hold) signal input Fixed to “L” for external pull-down resistor.
40
NC
O
Not used. (Open)
41
CLKOUT
O
Main serial clock signal output (for monitor)
42, 43
NC
O
Not used. (Open)
44
WRI/WR
I
External data bus (WRI/WR) signal input Fixed to “H” for external pull-up resistor.
45
FL DAT3
O
Fluorescent indicator tube serial data signal output
46
NC
O
Not used. (Open)
47
FL CLK IN
I
Fluorescent indicator tube serial clock signal input
48 to 59
NC
O
Not used. (Open)
60
VCC2
—
Power supply pin (+3.3 V)
61
NC
O
Not used. (Open)
62
VSS
—
Ground pin
63 to 69
NC
O
Not used. (Open)
70
CLKOUT SEL
O
Serial clock out select signal output
71 to 76
NC
O
Not used. (Open)
77
KEY PUSH
I
Rotary encoder push key detect signal input
78 to 84
NC
O
Not used. (Open)
85
KEY 1
I
Key signal input 1
86
KEY 2
I
Key signal input 2
87, 88
NC
O
Not used. (Open)
89
SIRCS
I
SIRCS data signal input
90
ILL GREEN
O
Illumination (green) change control signal output
91
ILL BLUE
O
Illumination (blue) change control signal output
92
ILL RED
O
Illumination (red) change control signal output
93
NC
O
Not used. (Open)
DISPLAY BOARD IC901 R5F64116DA01FB (DISPLAY CONTROL)
CDX-GT930UI/GT937UI/GT980UI
40
Pin No.
Pin Name
I/O
Description
94
AVSS
—
Ground pin
95
NC
O
Not used. (Open)
96
VREF
—
Reference voltage power supply pin (+3.3 V)
97
AVCC
—
Power supply pin (+3.3 V)
98
BLINK
O
Ring LED blink control signal output Normally: “H”
99
FL DAT2
O
Fluorescent indicator tube serial data signal output 2
100
FL CLK OUT
O
Fluorescent indicator tube serial clock signal output
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