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参数资料
| 型号： | LC74798M |
| 元件分类： | 画面叠加 |
| 英文描述： | ON-SCREEN DISPLAY IC, PDSO30 |
| 封装： | 0.375 INCH, MFP-30 |
| 文件页数： | 15/32页 |
| 文件大小： | 322K |
| 代理商： | LC74798M |
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No. 5833-22/32
LC74798, 74798M
COMMAND14 (VPS/PDC control setup command)
First byte
DA
Register
Contents
Notes
0 to 7
State
Function
7—
1
6—
1
5—
1
4—
1
3—
0
2—
1
1—
1
0—
1
Command 7 identification code.
Display control setup.
Extended command 7 identification code
Note: All registers are set to 0 when the LC74798/M is reset by the RST pin.
Second byte
DA
Register
Contents
Notes
0 to 7
State
Function
7—
0Second byte identification bit
6
VMWSE2
0V mask period start - From the retrace period
1V mask period start - From 10H before the retrace period
5
VMWSEL
0The V mask period is the retrace period
1The V mask period is 9H
4
HBS2
0Discrimination mode 1
1Discrimination mode 2
3
HBS1
0Discrimination mode 1
1Discrimination mode 2
2BMS
0
1
1EMS
0Data hold
1
0
DCE
1
CPOUT pin (pin 13) V mask period switching
Clock line
Framing code
When set to 0, if there are no errors in bytes for
which error checking is turned on, those bytes are
written to P-S. When set to 1, all bytes are written
to P-S regardless of the error status.
Specifies handling of bytes for which error
checking is set to off but in which an error occurred
when error checking is turned on.
Error checking setting for unused data bytes.
Biphase (VPS), Hamming (PDC), and odd parity
(header).
Error check valid (Error checking can be turned on or off on a per-byte
basis.)
Error check invalid (Applications can select whether data for which an
error is detected is held or writing on a per-byte basis.)
Data write
(When the error bit is 0 in VPS mode.)
Error checking enabled for unused data bytes.
VPS: bytes 3, 4, and 6 to 10, PDCC (8/30/2): bytes 7 to 12, header 1:
bytes 14 to 37, header 2: bytes 14 to 29, header 3: bytes 14 to 21,
status 1 (3): bytes 7 to 25, status 2 (4): bytes 7 to 35
Error checking disabled for unused data bytes.
VPS: bytes 3, 4, and 6 to 10, PDCC (8/30/2): bytes 7 to 12, header 1:
bytes 14 to 37, header 2: bytes 14 to 29, header 3: bytes 14 to 21,
status 1 (3): bytes 7 to 25, status 2 (4): bytes 7 to 35
CPOUT pin (pin 13) V mask period switching 2
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