Sony DSX-A50BT Service Manual page 27

• IC Pin Function Description
MAIN BOARD IC101 R5F3650KCDZ98FB (SYSTEM CONTROLLER)
Pin No. Pin Name
1 NOSE_SW
2 SIRCS
3 to 5 NC
6 BYTE
7 CNVSS
8 XIN
9 XOUT
10 RESET
11 OSCOUT
12 VSS
13 OSCIN
14 VCC1
15 NMI
16 CMD_ERR
17 BUSY
18 SYSRST
19 CE
20 SDI
21 SCK
22 SDO
23 USB_IN
24 SYNC_OUT
25 WDT_MON
26 BEEP
27, 28 NC
29 FW_TXD
30 FW_RXD
31 FW_CLK
32 FW_BUSY
33 to 38 NC
39 EPM
DEBUG_1 to
40 to 43
DEBUG_4
44 CE
45 HIT2_SDA
46 HIT2_SCL
47 HIT2_RESET
48 EN_USB
49 NC
50 FLT_USB
51 EN_SYS
52 IPOD
53 NC
54 TELATT
55 ACC_IN
56 ATT
57 AMP_MUTE
58 AMPSTB
59 ILL_ON
60 VCC2
61 NC
62 VSS
63 PIC_ERR
64 NC
65 BT_MUTE (A50)
66 BU_IN
I/O
I Front panel remove/attach detection signal input terminal
I Remote control signal input from the remote control receiver
- Not used
I External data bus width selection signal input terminal
I Processor mode selection signal input terminal
I Sub system clock input terminal (32.768 kHz)
O Sub system clock output terminal (32.768 kHz)
System reset signal input from the reset signal generator
I
For several hundreds msec. after the power supply rises, "L" is input, then it change to "H"
O Main system clock output terminal (7.92 MHz)
- Ground terminal
I Main system clock input terminal (7.92 MHz)
- Power supply terminal (+3.3V)
I Non-maskable interrupt signal input terminal
I Command error signal input from the USB controller
I Busy signal input from the USB controller
O Reset signal output to the USB controller
O Chip enable signal output to the USB controller
I Serial data input from the USB controller
O Serial data transfer clock signal output to the USB controller
O Serial data output to the USB controller
I USB device detection signal input from the USB controller
O Frequency control signal output to the DC/DC converter
I Watch-dog timer status monitor input from the USB controller
O Beep sound output to the power amplifi er
- Not used
O Serial data output terminal for fl ash writing
I Serial data input terminal for fl ash writing
I Serial data transfer clock signal input terminal for fl ash writing
O Busy signal output terminal for fl ash writing
- Not used
O EPM signal output terminal
O Debug terminal Not used
O Chip enable signal output terminal
I/O Two-way serial data bus with the tuner unit
O Serial data transfer clock signal output to the tuner unit
O Reset signal output to the tuner unit
O USB power switch on/off control signal output to the DC/DC converter
- Not used
I USB power supply switch fault status signal input from the DC/DC converter
O VBUS power supply on/off control signal output to the DC/DC converter
O Not used
- Not used
I Telephone attenuator detection signal input terminal
I Accessory power detection signal input terminal
O Audio muting on/off control signal output terminal
O Amplifi er muting on/off control signal output to the power amplifi er
O Standby signal output to the power amplifi er
O Power supply on/off control signal output terminal for illumination LED
- Power supply terminal (+3.3V)
- Not used
- Ground terminal
I Error detection signal input from the power amplifi er
- Not used
I Muting on/off control signal input from the Bluetooth section
I Back-up power detection signal input terminal
Description
"L": front panel is attached
"L": reset
Fixed at "H" in this unit
"L": reset
Fixed at "L" in this unit
Fixed at "H" in this unit
"L": reset
Fixed at "L" in this unit
"H": muting on
"L": standby
"L": error
"H": muting on
DSX-A50BT
"H": switch on
"H": power on
"H": muting on
"H": power on
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