– 30 –
VIDEO BOARD IC901
µ
PD780016YGF-012-3BA (IIC INTERFACE CONTROLLER)
Pin No.
Pin Name
I/O
Function
1 to 8
P80 to P87
I
Not used (fixed at “L”)
9
TEST
I
Test terminal (fixed at “L”)
10
X2
O
Main system clock output terminal (5 MHz)
11
X1
I
Main system clock input terminal (5 MHz)
12
VDD
—
Power supply terminal (+5V)
13
XT2
O
Sub system clock output terminal Not used (open)
14
XT1
I
Sub system clock input terminal Not used (fixed at “H”)
15
RESET
I
Reset signal input from the master controller (IC301) “L”: reset
16
P00
I
Inputs the boundary point control (phase fix) for CXD1854Q (IC301) (fixed at “L”)
17
P01
I
Inputs the boundary point control (phase switch) for CXD1854Q (IC301) (fixed at “L”)
18
QINT
I
Interrupt status input from the CD mechanism controller (IC701)
19 to 22
P03 to P06
I
Inputs the boundary point control (phase 0 to 3) for CXD1854Q (IC301) (fixed at “L”)
23
VDD
—
Power supply terminal (+5V)
24
AVDD
—
Power supply terminal (+5V) (for A/D conversion)
25 to 32
P10 to P17
I
Not used (fixed at “L”)
33
AVSS
—
Ground terminal (for A/D conversion)
34
CMD0
I/O
35
CMD1
I/O
36
CMD2
I/O
37
CMD3
I/O
38
P24
I
Not used (fixed at “L”)
39
P25
I
Not used (fixed at “L”)
40
VSS
—
Ground terminal
41
P26
I
Not used (fixed at “L”)
42
P27
I
Not used (fixed at “L”)
43
MREQ
O
Communication request signal output to the CD mechanism controller (IC701)
44
SACK
I
Data acknowledge input from the CD mechanism controller (IC701)
45
CDGM
I
Not used (fixed at “L”)
46
P93
I
Not used (fixed at “L”)
47
MDATA
O
Serial data output to the on screen display controller (IC271) and video noise reduction (IC301)
48
MCLK
O
Serial data transfer clock signal output to the on screen display controller (IC271) and video
noise reduction (IC301)
49
OS-XLAT
O
Serial data latch pulse output to the on screen display controller (IC271)
50
G-XLAT
O
Serial data latch pulse output terminal Not used (open)
51
G-XRST
O
Reset signal output terminal Not used (open)
52
CD-XRST
O
Reset signal output to the CD/video CD circuit “L”: reset
53
CDPOW
O
Power on/off selection signal output terminal Not used (open)
54
DOUT
O
Digital output terminal Not used (open)
55
IIC-DATA
I/O
Communication data bus with the master controller (IC301) and fluorescent indicator tube
driver (IC601)
56
IIC-CLK
I/O
Communication data reading clock signal input or transfer clock signal output with the master
controller (IC301) and fluorescent indicator tube driver (IC601)
57 to 64
P40 to P47
I
Not used (fixed at “L”)
65
NRON
O
Video noise reduction system on/off selection signal output terminal Not used (open)
66
LEVEL0
O
Level control signal output terminal Not used (open)
67
LEVEL1
O
Level control signal output terminal Not used (open)
Two-way data bus with the mechanism controller (IC701)
