18
XT-P50V
4-10.
IC PIN FUNCTION DESCRIPTION
•
IC108 M38039FFFP-081 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1, 2
N.C.O
I
Not used
3
AFT
I
Auto fine tuning detection signal input from the TV tuner unit
4
ACC IN
I
Accessory detection signal input “L”: accessory on
5
N.C.O
I
Not used
6
LINKOFF
O
Link on/off control signal output for the SONY bus “H”: link off
7, 8
N.C.O
I
Not used
9
UNI CLK
I
Serial data transfer clock signal input from the SONY bus interface
10
UNI SO
O
Serial data output to the SONY bus interface
11
UNI SI
I
Serial data input from the SONY bus interface
12
BUSY
I
Busy signal input terminal
13
SCLK
O
Serial data transfer clock signal output terminal
14
N.C.O
I
Not used
15
SDA
I/O
Two-way data bus terminal
16
BUSON
I
Bus on/off control signal input from the SONY bus interface “L”: bus on
17
BUCKUP
I
Battery detection signal input “H”: battery on
18
VPP
I
VPP signal input terminal
19
RESET
I
System reset signal input from the SONY bus interface and reset signal generator “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
20
VSYNC
I
Vertical sync signal input from the sync separator
21
HSYNC
I
Horizontal sync signal input from the sync separator
22
XIN
I
Main system clock input terminal (8 MHz)
23
XOUT
O
Main system clock output terminal (8 MHz)
24
VSS
—
Ground terminal
25
IR IN
I
IR data input
26
OSD CE
O
Chip enable signal output to the on screen display controller “H” active
27
OSD CLK
O
Serial data transfer clock signal output to the on screen display controller
28
OSD DATA
O
Serial data output to the on screen display controller
29
PLLCE
O
Chip enable signal output to the TV tuner unit “H” active
30
PLLCLK
O
Serial data transfer clock signal output to the TV tuner unit
31
PLLDAT
O
Serial data output to the TV tuner unit
32
N.C.O
I
Not used
33 to 35
SEL 1 to SEL 3
I
TV SYSTEM switch input terminal
36
N.C.O
I
Not used
37
POWER
O
System power supply on/off control signal output “H”: power on
38
N.C.O
I
Not used
39
SONYBUS
I
SONY bus detection signal input “L”: SONY bus connected
40 to 43
N.C.O
I
Not used
44
SDA
I/O
Two-way data bus with the EEPROM
45
SCL
O
Serial data transfer clock signal output to the EEPROM
46
A SEL
O
TV/CD changer audio selection signal output “L”: TV, “H”: CD/DVD changer
47
VMUTE
O
Video line muting on/off control signal output “H”: muting on
48
AMUTE
O
Audio line muting on/off control signal output “H”: muting on
49
OE
O
Output enable signal output terminal “L” active
50
VATT2
O
Video line muting on/off control signal output “H”: muting on
51
N.C.O
I
Not used