Sony CDX-GT450U Service Manual page 26

CDX-GT50UMS/GT450U/GT457UE/GT500U/GT500US/GT505U
• IC Pin Function Description
MAIN BOARD (2/3) IC501 R5F3650KBDZ99FA (SYSTEM CONTROL)
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 SYNC_OUT
27
28
29
30
31
32
33
34
35, 36
37
38
39
40
41
42 MODELNAME_SEL0
43 MODELNAME_SEL1
44 MODELNAME_SEL2
45 MODELNAME_SEL3
46
47
48 SA_DATAIN
49 SA_CLKOUT
50
51
52
53 EXTATT_XEN
54, 55
56
57
58
26
Downloaded from www.Manualslib.com
Pin Name I/O
LCD_SO O Serial data output for LCD driver
LCD_CLK O Serial clock signal output for LCD driver
NOSE_SW I Front panel detach detect signal input (Fixed at L in this set)
SIRCS I SIRCS signal input
UNISO O SONY BUS serial data output (Not used in this set)
UNISI I SONY BUS serial data input (Fixed at L in this set)
UNISCK O SONY BUS serial clock signal output (Fixed at L in this set)
BYTE I External data bus width select signal input (Connect to VSS in this set)
CNVSS I Flash writer IF (CNVSS) signal input (L: normally operation, H: fl ash write)
XIN I Low speed operation clock signal input (32.768 kHz)
XOUT O Low speed operation clock signal output (32.768 kHz)
RESET I System reset signal input
OSCOUT O High speed operation clock signal output (7.92 MHz)
VSS — Ground
OSCIN I High speed operation clock signal input (7.92 MHz)
VCC1 — Power supply pin (+3.3 V)
NMI I Non-maskable interrupt signal input (Fixed at H in this set)
RC_IN1 I Rotary commander shift key signal input
BUIN I Backup power supply detect signal input
SYSRST O System reset signal output
BUS_ON O VBUS power control signal output (Not used in this set)
MC_RX I MC-BUS communication MECHA (CMX-101Z) TX signal input
NCO O Not used. (Open)
MC_TX O MC-BUS communication MECHA (CMX-101Z) RX signal output
NCO O Not used. (Open)
O DD converter frequency control signal output
NCO O Not used. (Open)
BEEP O Beep signal output for the power amplifi er IC
I2C_SCK O IIC communication serial clock signal output
I2C_SIO I/O IIC communication serial data input/output
FW_TXD O Flash writer IF (serial data) output
FW_RXD I Flash writer IF (serial data) input
FW_CLK I Flash writer IF (serial clock) signal input
FW_BUSY O Flash writer IF (busy) signal output
NCO O Not used. (Open)
CD_ON I CD mechanism servo power supply control request signal input
CDM_ON I CD mechanism deck power supply control request signal input
WAKE_UP O CD mechanism deck micon wake up signal output
Z_MUTE I Z mute signal input
EPM O EPM signal output (Fixed at L in this set)
I Model name select signal input 0 (Fixed at L in this set)
I Model name select signal input 1 (Fixed at L in this set)
I Model name select signal input 2 (Fixed at L in this set)
I Model name select signal input 3 (Fixed at L in this set)
CE O CE signal output (Fixed at H in this set)
NCO O Not used. (Open)
I Paradisso spectrum analyzer serial data input
O Paradisso spectrum analyzer serial clock signal output
USBON O USB over current detect IC control signal output
VBUS_ON I VBUS power supply control signal input (L: VBUS OFF, H: VBUS ON)
USB_OVR I USB over current detect signal input
L is sent when electronic volume IC has the status of CD/USB (H is sent when it has the
O
status of other source) (Not used in this set)
NCO O Not used. (Open)
TELATT I Telephone attenuator detect signal input (AEP, UK, Russian model)
ACC_IN I Accessory power supply detect signal input
ATT O Audio mute control signal output
manuals search engine
Description