參數(shù)資料
型號: MSM7661
廠商: OKI SEMICONDUCTOR CO., LTD.
英文描述: NTSC/PAL Digital Dencoder(NTSC/PAL制式數(shù)字譯碼器)
中文描述: NTSC / PAL數(shù)字Dencoder(的NTSC / PAL制式數(shù)字譯碼器)
文件頁數(shù): 16/40頁
文件大小: 293K
代理商: MSM7661
Semiconductor
MSM7661
16/40
MRB[3]
Sync enable, clamping pulse 0:
HSY outputs "HIGH" level.
HSY outputs active.
*1:
MRB[2]
Data-pass control
*0:
1:
DECIMETER is used at 2X sampling.
No DECIMETER is used.
(Note) This register becomes valid at doube-speed clock input(27 MHz).
MRB[1:0]
Y/C separation mode
*00:
Adaptive comb filter (Operation mode is
selected monitoring the correlation of 3
lines.)
01:
Nonadaptive comb filter (Operation mode
is always fixed.)
10:
Comb filter is not used. (Trap filter is used.)
11:
Undefined
(Note) Adaptive comb filter:
2/3-line comb filter at NTSC
Comb filter/trap filter at PAL
3-line comb filter at NTSC
2-line cosine comb filter at PAL
Non-adaptive comb filter:
Horizontal Sync Trimmer (HSYT) <default: 0x00>
HSYT[7:4]
HSY begin trimmer (8/pixel)
0xC: –4 (–32)
to
0xB: +11 (+88)
HSYT[3:0]
HSY stop trimmer (8/pixel)
0xC: –4 (–32)
to
0xB: +11 (+88)
Sync Threshold level adjust (STHR) <default: 0x00>
STHR[7:0]
Sync depth
0x0: –0
to
*0x37:55 to 0xFF:255
(Note) The sync signal detect threshold level is adjusted.
Horizontal Sync Delay (HSDL) <default: 0x00>
HSDL[7:0]
HSYNC_L delay trimmer (4/pixel)
0x80: –128 (–512)
to
0x7F: +127 (508)
Horizontal Valid Trimmer (HVALT) <default: 0x00>
HVALT[7:0]
HVALID begin trimmer (1/pixel)
0x8: –8
to
0x7: +7
HVALT[3:0]
HVALID stop trimmer (1/pixel)
0x8: –8
to
0x7: +7
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