Sony HCD-BC150 Service Manual page 56

HCD-BC150/BC250
Ver 1.3
• MAIN BOARD IC509 uPD703261YGF-S21-JBT-A (SYSTEM CONTROLLER)
Pin No. Pin Name
1 HP SW
2 HP MUTE
3 AVREF0
4 AVSS
5 V CONTROL
6 AC_ON/OFF
7 AVREF1
8 DRIVE_OCP
9 DRIVE_RST
10 FLASH0
11 VDD
12 REGC
13 VSS
14 X1
15 X2
16 RESET
17 XT1
18 XT2
19 DIAT XRST
20 KEY INT
21 RM_INT
22 (Can't USE)
23 AC_CUT
24 NO USE
25 NO USE
26 NO USE
27 FL_D_OUT/LED_DATA
28 NO USE
29 FL_CLK
30 FL_CS/STB
31 LED_RST
32 BACK LIGHT
33 STBY_LED
34 SIRCS_IN
35 EVSS
36 EVDD
37 12C DATA
38 12C CLK
39 MUTE REQ
40 SYS RESET
41 LED LAT/DF INIT
42 DIAT XSCEN
DIAT SDATA
43
DAMP SCDT
DIAT SCLK/
44
DAMP SHIFT
45 DAMP LATCH1
56
I/O
I Switch headphone is insert input
O Control of muting headphone signal output
— Analog reference voltage for A/D converter
— Analog ground
O Voltage control signal output to the switching regulator
O AC power on/off signal output to the switching regulator
— Analog reference voltage for D/A converter
I Over load detect signal input
O System Reset signal output to the power driver
I Flash programing mode (pull down)
— Power supply(+3.3V)
— Regulator control-connect
— Terminal Ground
I Crystal input for main clock
O Crystal output for main clock
I System reset signal input
— Not used
— Not used
— Not used
I Wake up from ECO mode by key input
I Wake up from ECO mode by sircs input
I Can't Use Port
I Detect AC-CUT (primary power off)
— Not used
— Not used
— Not used
O Data output to the FL driver/LED driver
— Not used
O Clock signal output to the FL driver/LED driver
O Chip select signal output to the FL driver
O Reset signal output to the LED driver
O Back light output
O Standby LED control signal output
I Sircs input
— Terminal Ground
— Power supply(+3.3V)
I/O Two-way 12C data bus with the DVD system processor and mechanism controller
I/O Two-way 12C clock bus with the DVD system processor and mechanism controller
O Mute Req signal output to the DSP
O Signal reset signal output to the DSP
O LED LAT signal output to the LED driver
— Not used
O Digital amp serial data output
O Digital amp shift clock signal data output
O Digital amp chip select1 signal output
Description