Sony HCD-HDX275 Service Manual page 75

HCD-HDX275/HDX277WC/HDX279W/HDX475/HDX576WF/HDX675
• IC Pin Function Description
MAIN BOARD IC501 R5F3640DDFA (SYSTEM CONTROLLER)
Pin No. Pin Name
1 DAMP_SCD
2 DAMP_SHIFT
3 CEC_RX_IN
4 SIRCS_IN
5 NO USE
6 NO USE
7 NO USE
8 BYTE
9 CNVSS
10, 11 EN_A, EN_B
12 RESET
13 XOUT
14 VSS
15 XIN
16 VCC
17 NMI
18 NO USE
19 A.CAL_OUT_LEVEL
20 AC_CUT
21 FL_CLK/LED_CLK
22 CEC_TX_OUT
23 FL-STB
24 FL_D_OUT/LED_DATA
25 S-AIR_SRC_MUTE
26 MIC_GAIN
27 NO USE
28 DC_CONT
29 DMPORT_RX_IN
30 DMPORT_TX_OUT
31 DVD_SID
32 DVD_SOD
33 DVD_SCO
34 DVD_XIFBUSY
35, 36 NO_USE
37 DVD XIFCS
38 MTK_RST
39 to 41 P_CONT1 to P_CONT3
42 DRIVE_RST (EN)
DRIVE_OCP(DIAG)/
43
POWER_DET
OVERFLOW1,
44, 45
OVERFLOW2
46 CE
EEPROM_SDA/
47
I2C_DATA
EEPROM_SCL/
48
I2C_CLK
49 DAMP_LATCH3
50 DAMP_INIT
51 DAMP_SOFT_MUTE
52 M_ST
53 HP_MUTE
54 S-AIR_ADC_SEL
I/O
O Serial data output to the stream processor
O Serial data transfer clock signal output to the stream processor
I CEC serial data input from the HDMI OUT connector
I SIRCS signal input from the remote control receiver
O Not used
O Not used
O Not used
I External data bus width selection signal input terminal
I Processor mode switch input terminal (for test)
I Jog dial pulse input from the rotary encoder (for VOLUME)
System reset signal input from the reset signal generator
I "L": reset For several hundreds msec. after the power supply rises, "L" is input, then it
change to "H"
O Main system clock output terminal (5 MHz)
- Ground terminal
I Main system clock input terminal (5 MHz)
- Power supply terminal (+3.3V)
I Non-maskable interrupt input terminal
O Not used
I Output level detect terminal for the auto calibration
I AC cut detection signal input terminal
O Serial data transfer clock signal output to the LED driver and fl uorescent indicator tube driver
O CEC serial data output to the HDMI OUT connector
Fluorescent indicator tube driver chip select signal output to the fl uorescent indicator tube
O
driver
O Serial data output to the LED driver and fl uorescent indicator tube driver
O Not used
O MIC gain control signal output terminal
O Not used
O Muting on/off control signal output terminal
I Serial data input from the DMPORT connector
O Serial data output to the DMPORT connector
O Serial data output to the servo DSP
I Serial data input from the servo DSP
I Serial data transfer clock signal input from the servo DSP
O Busy signal output to the servo DSP
O Not used
I Chip select signal input from the servo DSP
O Reset signal output to the servo DSP and fl ash memory
O Power on/off control signal output terminal
O Reset signal output to the digital power amplifi er
I Shut down state input from the digital power amplifi er
I Over fl ow status input from the stream processor
I Flash write CE Not used (Fixed to at "H" (E3.3V))
I/O I2C Two-way data bus with the EEPROM
I/O I2C data transfer clock signal input/output with the EEPROM
O Serial data latch pulse signal output to the stream processor
O Reset signal output to the stream processor
O Soft muting on/off control signal output to the stream processor
O Audio selection signal output to the audio selector
O Muting on/off control signal output terminal
O Selection signal output to the data selector or EZW-T100
Description
Fixed at "L" in this set
Fixed at "L" in this set
Fixed at "H" in this set Not used
"L": AC cut on
"L": reset
"H": power on
"L": reset
"L": shut down
"L": reset
"L": muting on
Not used
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