HCD-HDX275/HDX277WC/HDX279W/HDX475/HDX576WF/HDX675
75
• IC Pin Function Description
MAIN BOARD IC501 R5F3640DDFAR (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
DAMP_SCD
O
Serial data output to the stream processor
2
DAMP_SHIFT
O
Serial data transfer clock signal output to the stream processor
3
CEC_RX_IN
I
CEC serial data input from the HDMI OUT connector
4
SIRCS_IN
I
SIRCS signal input from the remote control receiver
5
NO USE
O
Not used
6
NO USE
O
Not used
7
NO USE
O
Not used
8
BYTE
I
External data bus width selection signal input terminal Fixed at "L" in this set Not used
9
CNVSS
I
Processor mode switch input terminal (for test) Fixed at "L" in this set
10, 11
EN_A, EN_B
I
Jog dial pulse input from the rotary encoder (for VOLUME)
12
RESET
I
System reset signal input from the reset signal generator
"L": reset For several hundreds msec. after the power supply rises, "L" is input, then it
change to "H"
13
XOUT
O
Main system clock output terminal (5 MHz)
14
VSS
-
Ground terminal
15
XIN
I
Main system clock input terminal (5 MHz)
16
VCC
-
Power supply terminal (+3.3V)
17
NMI
I
Non-maskable interrupt input terminal Fixed at "H" in this set Not used
18
NO USE
O
Not used
19
A.CAL_OUT_LEVEL
I
Output level detect terminal for the auto calibration
20
AC_CUT
I
AC cut detection signal input terminal "L": AC cut on
21
FL_CLK/LED_CLK
O
Serial data transfer clock signal output to the LED driver and
fl
uorescent indicator tube driver
22
CEC_TX_OUT
O
CEC serial data output to the HDMI OUT connector
23
FL-STB
O
Fluorescent indicator tube driver chip select signal output to the
fl
uorescent indicator tube
driver
24
FL_D_OUT/LED_DATA
O
Serial data output to the LED driver and
fl
uorescent indicator tube driver
25
S-AIR_SRC_MUTE
O
Not used
26
MIC_GAIN
O
MIC gain control signal output terminal
27
NO USE
O
Not used
28
DC_CONT
O
Muting on/off control signal output terminal
29
DMPORT_RX_IN
I
Serial data input from the DMPORT connector
30
DMPORT_TX_OUT
O
Serial data output to the DMPORT connector
31
DVD_SID
O
Serial data output to the servo DSP
32
DVD_SOD
I
Serial data input from the servo DSP
33
DVD_SCO
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 "L": reset
O
Power on/off control signal output terminal "H": power on
O
Reset signal output to the digital power ampli
fi
er "L": reset
I
Shut down state input from the digital power ampli
fi
er "L": shut down
I
Over
fl
ow status input from the stream processor
I
Flash write CE Not used (Fixed to at "H" (E3.3V))
47
EEPROM_SDA/
I2C_DATA
I/O
I2C Two-way data bus with the EEPROM
48
EEPROM_SCL/
I2C_CLK
I/O
I2C data transfer clock signal input/output with the EEPROM
49
DAMP_LATCH3
O
Serial data latch pulse signal output to the stream processor
50
DAMP_INIT
O
Reset signal output to the stream processor "L": reset
51
DAMP_SOFT_MUTE
O
Soft muting on/off control signal output to the stream processor "L": muting on
52
M_ST
O
Audio selection signal output to the audio selector
53
HP_MUTE
O
Muting on/off control signal output terminal
54
S-AIR_ADC_SEL
O
Selection signal output to the data selector or EZW-T100
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TEL 13942296513
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TEL 13942296513 QQ 376315150 892498299
