Sony CDX-GT33U Service Manual page 29

Pin No. Pin Name
59 MC_RX
60 MC_TX
61 CLK_IN
62 Z_MUTE
63, 64 NCO
65 VCC
66 VSS
67 NCO
68 AMP_STB
69 DIAG
70 VBUS_ON
71 SA_OUT
72 SA_CLK
73 NCO
74 TU_ATT
75 NCO
76 RDS_ON
77 FLASH_EN0
78 FLASH_EN1
79 to 81 NCO
82 TU_ATTIN
83 BU_CHECK
84 DAVN
85 to 89 NCO
90 VCC
91 VSS
92 OSC_OUT
93 OSC_IN
94 NCO
95 SIRCS
96 NCO
97 BEEP
98 E-VOL_ATT
99 SYNC_OUT
100 DD_ON
I/O
I MC-BUS communication and CD mechanism deck micon communication RX input
O MC-BUS communication and CD mechanism deck micon communication TX output
I Flash programming serial clock signal input
I Z mute signal input
O Not used. (Open)
— Power supply pin (+3.3 V)
— Ground
O Not used. (Open)
O Standby signal output for power regulator IC
I Condition signal input from power amp IC
I VBUS power supply control signal input (L: VBUS OFF, H: VBUS ON)
O Spectrum analyzer serial data output
O Spectrum analyzer serial clock signal output
O Not used. (Open)
O Tuner mute control signal output (Not used in this set)
O Not used. (Open)
O RDS IC power supply control signal output (AEP, UK, IT, RU model)
I Flash writer programming wake up signal input (Fixed at L in this set)
I Flash writer programming wake up signal input
O Not used. (Open)
O Not used. (Open)
I Back up power supply detect signal input
I RDS data block sync detect signal input (AEP, UK, IT, RU model)
O Not used. (Open)
— Power supply pin (+3.3 V)
— Ground
O High speed operation clock signal output (7.92 MHz)
I High speed operation clock signal input (7.92 MHz)
O Not used. (Open)
I Remote control signal input
O Not used. (Open)
O Beep signal output for power amplifi er IC
O Electronic volume mute control signal output
O DC/DC converter oscillation frequency control signal output
O DC/DC converter power supply ON/OFF control signal output
Description
CDX-GT33U
29