參數(shù)資料
型號: LC74776
元件分類: 畫面疊加
英文描述: ON-SCREEN DISPLAY IC, PDIP30
封裝: SDIP-30
文件頁數(shù): 7/35頁
文件大?。?/td> 253K
代理商: LC74776
No. 6018-15/35
LC74776, 74776M
DA 0 to 7
Register
Contents
Notes
State
Function
7
1
6
1
Command 6 identification code.
5
1
Synchronizing signal control setup.
4
0
3
SEL0
0
1
0
Switches the SEPOUT (pin 19) output
2
MOD0
1
DISLIN
0
12 lines
Switches the number of lines displayed
1
10 lines
0
MUT
0
Normal output
CVOUT switching
1
CVIN is cut and CVOUT is held at the pedestal level
First byte
SEL0
MOD0
SEPOUT
0
DAV
0
1
Sliced data width
1
0
CSYNC
1
ST pulse signal
COMMAND6 (Synchronizing signal detection setup command)
DA 0 to 7
Register
Contents
Notes
State
Function
7
0
Second byte identification bit
6
RN2
0
1
5
RN1
0
1
4
RN0
0
1
3
SN3
0
1
2
SN2
0
1
SN1
0
1
0
SN0
0
1
Second byte
RN2
RN1
RN0
Number of times HSYNC detected
0
0 (32)
0
1
4 (64)
0
1
0
8 (128)
1
0
16 (256)
SN3
SN2
SN1
SN0
Number of times HSYNC detected
0
Not output
0
1
32
0
1
0
64
0
1
0
128
1
0
256
External synchronizing signal detection control.
Signal absent
→ signal present transition
detection.
Sets the sampling period in which SYNC can
be detected continuously in the horizontal
synchronizing signal period (1H).
Values in parentheses apply when RNE0
(COM18) is 1.
External synchronizing signal detection
control.
Signal present
→ signal absent transition
detection.
Sets the sampling period in which SYNC
cannot be detected continuously in the
horizontal synchronizing signal period (1H).
Note: All registers are set to 0 when the LC74776/M is reset by the RST pin.
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