參數(shù)資料
型號(hào): LC78711
廠商: Sanyo Electric Co.,Ltd.
英文描述: Graphics Display Processor
中文描述: 圖形顯示處理器
文件頁(yè)數(shù): 5/43頁(yè)
文件大?。?/td> 781K
代理商: LC78711
No. 5476-5/43
LC78711E
Basic Specifications
Pin no.
Pin
Pin type
I/O
Polarity
Pin function
1
TEST1
Test input
I
Positive
Test input. Must be connected to ground during normal operation.
2
TEST2
Test input
I
Positive
Test input. Must be connected to ground during normal operation.
3
TEST3
Test output
O
Positive
Test output
4
TEST4
Test input
I
Positive
Test input. Must be connected to ground during normal operation.
5
TEST5
Test input
I
Positive
Test input. Must be connected to ground during normal operation.
6
TEST6
Test input
I
Positive
Test input. Must be connected to ground during normal operation.
7
DV
DD
1
CE
Power supply (+5 V)
Digital system power supply
8
Enable input
I
Positive
Serial I/O data control input
9
DO
Data output
O
Positive
Serial data output
10
DI
Data input
I
Positive
Serial data input
11
CL
Clock input
I
Positive
Serial data I/O clock input
12
PSC1
Monitor 1 output
O
Positive
Serial input monitor signal output
13
PSC2
Monitor 2 output
O
Positive
Command monitor signal output
14
WAIT
Wait signal output
O
Negative
Serial input wait signal output (for use with bit maps)
15
INT
Wait signal output
O
Negative
Serial input wait signal output (for use with the sprite function)
16
TEST7
Test input
I
Positive
Test input. Must be connected to ground during normal operation.
17
DV
SS
1
WE
Ground
Digital system ground
18
DRAM output
O
Negative
DRAM write enable signal output
19
RAS
DRAM output
O
Negative
DRAM row address strobe signal output
20
A0
DRAM output
I/O
Positive
DRAM address (A0) output (Functions as an input in test mode.)
21
A1
DRAM output
I/O
Positive
DRAM address (A1) output (Functions as an input in test mode.)
22
A2
DRAM output
I/O
Positive
DRAM address (A2) output (Functions as an input in test mode.)
23
A3
DRAM output
I/O
Positive
DRAM address (A3) output (Functions as an input in test mode.)
24
A4
DRAM output
I/O
Positive
DRAM address (A4) output (Functions as an input in test mode.)
25
A5
DRAM output
I/O
Positive
DRAM address (A5) output (Functions as an input in test mode.)
26
A6
DRAM output
I/O
Positive
DRAM address (A6) output (Functions as an input in test mode.)
27
A7
DRAM output
I/O
Positive
DRAM address (A7) output (Functions as an input in test mode.)
28
DB0
DRAM input and output
I/O
Positive
DRAM data (D0) input and output
29
CAS
DRAM output
O
Negative
DRAM column address strobe signal output
30
DB1
DRAM input and output
I/O
Positive
DRAM data (D1) input and output
31
OE
DRAM output
O
Negative
DRAM read enable signal output
32
DB2
DRAM input and output
I/O
Positive
DRAM data (D2) input and output
33
DB3
DRAM input and output
I/O
Positive
DRAM data (D3) input and output
34
CB
Color bar selection
I
Positive
Low: normal mode, high: color bar output
(A pull-down resistor is built in.)
35
TEST8
Test output
O
Positive
Test output
36
AV
SS
1
AV
DD
1
VIDEO1
Ground
Analog system ground
37
Power supply (+5 V)
Analog system power supply
38
Video signal (Y) output
O
Video (luminance) signal (analog) output (D/A converter output)
39
BIAS
Capacitor connection
O
Connections for a ripple exclusion capacitor
40
VIDEO2
Video signal (C) output
O
Video (chrominance) signal (analog) output (D/A converter output)
41
BFP
Burst flag signal output
O
Positive
Burst signal output timing flag output
Line count selection
NTSC mode - Low: 263H, high: 262H
PAL mode - Low: 314H, high: 312H
42
LINE
Line count selection
I
43
FSCIN
Clock input
I
Positive
Superimpose subcarrier clock input (A feedback resistor is built in.)
44
VSYNC
Vertical synchronization output
O
Negative
Vertical synchronizing signal output
45
TEST9
Test input
I
Positive
Test input. Must be connected to ground during normal operation.
(A pull-down resistor is built in.)
46
YS
Superimpose output
O
Negative
Superimpose control output
47
CSYNC
Composite synchronization output
O
Negative
Composite synchronizing signal output
48
4FSC2
Clock input
I
Positive
External clock input for the superimpose function
(A feedback resistor is built in.)
49
TEST10
Test output
O
Positive
Test output
50
TEST11
Test output
O
Positive
Test output
Continued on next page.
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