SCD-XE800 - Sony Audio Service Manual (repair manual). Page 30

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SCD-XE800
30
•  IC Pin Function Description
MAIN  BOARD  IC501  R5F364A6DFA (SYSTEM  CONTROLLER)
Pin No.
Pin Name
I/O
Description
1, 2
No Use
O
Not used
3
No Use
I
CEC serial data input from the HDMI OUT connector    Fixed at “H” in this set
4
SIRCS_IN
I
SIRCS signal input from the remote control receiver
5 to 7
No Use
O
Not used
8
BYTE
I
External data bus width selection signal input terminal    Fixed at “L” in this set
9
CNVSS
I
Processor mode switch input terminal
10
EN_A
I
Jog dial pulse input from the rotary encoder (A phase input)
11
EN_B
I
Jog dial pulse input from the rotary encoder (B phase input)
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
Vcc1
-
Power supply terminal (+3.3V)
17
NMI
I
Non-maskable interrupt input terminal    Fixed at “H” in this set
18
No Use
O
Not used
19
ASDMUTE
I
AC detection signal input terminal
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 fl uorescent indicator tube driver
22
No Use
O
CEC serial data output to the HDMI OUT connector    Not used
23
FL_STB
O
Chip select signal output to the fl uorescent indicator tube driver
24
FL_D_OUT/LED_DATA
O
Serial data output to the fl uorescent indicator tube driver
25
No Use
O
Not used
26
TROPENPWM
O
Tray speed PWM control signal output terminal    Not used
27
CDM_OPEN_SW
I
Disc tray open/close detection switch input terminal    “L”: disc tray is closed
28
DAC_CLK
O
Serial data transfer clock signal output to the D/A converter
29
No Use
I
Not used
30
DAC_DATA
O
Serial data output to the D/A converter
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
34
DVD_XIFBUSY
O
Busy signal output to the servo DSP
35
FWD
O
Loading motor drive signal output terminal (forward direction)
36
REV
O
Loading motor drive signal output terminal (reverse direction)
37
DVD_XIFCS
I
Chip select signal input from the servo DSP
38
MTK RST
O
Reset signal output to the servo DSP and fl ash memory    “L”: reset
39
P_CONT1
O
Power on/off control signal output terminal    “H”: power on
40
P_CONT2
O
Power on/off control signal output terminal    Not used
41
P_CONT0
O
Power on/off control signal output terminal    “H”: power on
42
No Use
O
Not used
43
STT_D/P
I
DSD/PCM signal input from the servo DSP
44
STT_M2
I
Multi/2ch signal input from the servo DSP    Not used
45
DMUTE
I
Audio muting signal input from the servo DSP
46
No Use
I
Not used
47
I2C_DATA
I/O
I2C Two-way data bus terminal    Not used
48
I2C_CLK
I
I2C data transfer clock signal input terminal    Not used
49, 50
No Use
O
Not used
51
No Use
O
Not used
52
MULTI/STEREO
O
Fixed at “L” in this set
53
XAMUTE
O
Muting on/off control signal output terminal    “L”: muting on
54
No Use
O
Not used
55
XDOUT_EN
I
Digital out (CD) on/off signal input terminal    “L”: Digital out (CD) on    Fixed at “L” in this set
56
MULTI_PRIO
I
HDMI priority selection signal input terminal    Not used
57 to 61
No Use
O
Not used
62
Vcc2
-
Power supply terminal (+3.3V)
63
No Use
O
Not used
64
Vss
-
Ground terminal
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