CPF-IX001, NAS-IX001P - Sony Audio Service Manual (repair manual). Page 31

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31
NAS-IX001P
PANEL BOARD  IC1518 
µ
PD78F0525GB (S)-401-UET-A (DISPLAY CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
ETHER_POWR
O
Ethernet power on/off control signal output to the ethernet/audio controller    "H": power on
2
ETHER_PDOWN
O
Ethernet power down signal output to the ethernet/audio controller    "L": power down
3
ETHER_RST
O
Ethernet reset signal output to the ethernet/audio controller, ethernet interface and flash ROM
"L": reset
4
SELF_PROG
O
Not used
5
RESET
I
System reset signal input terminal    "L": reset
For several hundreds msec. after the power supply rises, "L" is input, then it change to "H"
6, 7
NC
O
Not used
8
FLMD
I
Not used
9
X2
O
System clock output terminal (10 MHz)
10
X1
I
System clock input terminal (10 MHz)
11
REGC
-
External capacitor connection terminal
12
VSS
-
Ground terminal
13
VDD
-
Power supply terminal (+3.3V)
14
I2C_CLK
I/O
Two-way I2C clock bus with the ethernet/audio controller
15
I2C_DATA
I/O
Two-way I2C data bus with the ethernet/audio controller
16
NC
O
Not used
17
SIRCS
I
Remote control signal input from the remote control receiver
18
LCD_BL
O
Liquid crystal display back light LED control signal output to the LED driver    "H": LED on
19 to 28
NC
O
Not used
29
PDWON_DET
I
Power down detection signal input terminal    "L": power down
30, 31
NC
O
Not used
32
NETWORK_ILLMI
O
Network illumination LED drive signal output terminal     "H": LED on
33
LCD_RS
O
Read strobe signal output to the liquid crystal display
34
LCD_CS
O
Chip select signal output to the liquid crystal display    "L" active
35
LCD_DATA
O
Serial data output to the liquid crystal display
36
SI10
O
Not used
37
LCD_CLK
O
Serial data transfer clock signal output to the liquid crystal display
38
AVREF
I
Reference voltage (+3.3V) input terminal
39
AVSS
-
Ground terminal
40
DEST
I
Setting terminal for the destination
41
KEY2
I
Test mode key input terminal
42
KEY1
I
RESET key input terminal
43 to 50
NC
O
Not used
51
BACKLIGHT_ON
O
Liquid crystal display back light LED ON/OFF control signal output to the LED driver
"H": LED on
52
CHK_LAND1
O
Check terminal for the soft
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