- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384998 > TMC22051 (RAYTHEON SEMICONDUCTOR) 8-Bit Digital Video Decoder(8位數(shù)字視頻譯碼器) PDF資料下載
參數(shù)資料
| 型號： | TMC22051 |
| 廠商： | RAYTHEON SEMICONDUCTOR |
| 元件分類： | 顏色信號轉(zhuǎn)換 |
| 英文描述： | 8-Bit Digital Video Decoder(8位數(shù)字視頻譯碼器) |
| 中文描述： | COLOR SIGNAL DECODER |
| 文件頁數(shù)： | 50/84頁 |
| 文件大小： | 414K |
| 代理商： | TMC22051 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁當(dāng)前第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁
TMC22x5y
PRODUCT SPECIFICATION
50
P
line comb to switch directly to simple. The switching
between these two comb architectures is independent of the
mix signal, K. For 3-line Y/C comb filters, an external 1H
delay is required in the uncombed channel to compensate for
the comb filter delay.
This principle is equally true for NTSC frame and field based
comb decoders. The feature is not available for any of the
PAL comb filter architectures.
The Comb filter Adaption Threshold register bits CAT[1:0]
determine if 5%, 15%, 25%, or 50% errors in picture correla-
tion is required to adapt the NTSC comb filter. In NTSC, due
to the 180 degree advance in subcarrier phase per line, it is
possible to switch between the 3 line comb and the choice of
either the upper two line comb or the lower two line comb. If
this switching occurs on a pixel by pixel basis the picture
will contain vertical alias components. This artifact can be
reduced by either setting the FAST register bit LOW, which
filters the comb filter selection, and/ or setting the CAT[1:0]
register bits to a higher percentage threshold.
The comb filter adaption is further controlled by the
ADAPT[1:0] register bit selection, when the COMB[3:0]
register bits select a 3 line comb. These bits control if the
comb filter adapts from a 3 line comb to the best of the upper
or lower 2 line combs, from a 3 line comb to just the lower 2
line comb, performs a fixed 3 line comb, or implements a
best of two 3 line combs in PAL. If the COMB[3:0] register
bits select one of the 2 line comb filters, the ADAPT[1:0]
register bits are ignored, and no adaption is implemented.
The CFSEL[1:0] signal, shown in Figure 19, controls which
comb filter is selected on a pixel by pixel basis, and can be
externally monitored by reading CFSTAT[1:0] in register
4Bh.
Table 5. Adaption Modes
XLUT
The comb fail signals control both the comb filter adaption
and the cross fade between the adaptive comb filter output
YCOMB
and the
SIMPLE
bandsplit signal. Which of the fail
signals is fed to the XLUT is determined by which comb
filter is selected in NTSC. When a 3 line comb filter is
selected, the larger set of error signals are sent to the XLUT,
when a upper 2 line comb is selected
UYE
,
UME
, and
UPE
error signals are selected, and when a lower two line comb
filter is selected the
LYE
,
LME
, and
LPE
error signals are
selected.
ADAPT[1:0]
00
Function
Adapts to the best of 3 types of line
based comb filters in NTSC only.
3 line (tap) comb always adapts to
lower 2 line (tap) comb, when the 3 line
(tap) comb fails. Normally used with
NTSC field and frame based comb
filters.
3 line (tap) comb only. Never adapts to
a 2 line(tap) filter. The higher set of
comb filter error signals are sent to the
XLUT. NTSC or PAL comb filter.
Adapts to best of two 3 line comb filters
in PAL only.
01
10
11
Figure 19. Comb Filter Selection
ADAPT[1:0]
Comb
Fail
Logic
Filter
2:1
MUX
YCSEL
65-22x5y-60
CFSEL[3:0]
YERR
PERR
MERR
FAST
STA[3:0]
CAT[1:0]
UYE
LYE
UPE
LPE
UME
LME
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TMC22052 | 8-Bit Digital Video Decoder(8位數(shù)字視頻譯碼器) |
| TMC22053 | 8-Bit Digital Video Decoder(8位數(shù)字視頻譯碼器) |
| TMC22152 | 8-Bit/10-Bit Digital Video Decoder(8位/10位數(shù)字視頻譯碼器) |
| TMC22153 | 8-Bit/10-Bit Digital Video Decoder(8位/10位數(shù)字視頻譯碼器) |
| TMC222 | MotionControl Integrated Circuit |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TMC22051 WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| TMC22051AKHC | 功能描述:多媒體雜項(xiàng) RoHS:否 制造商:Texas Instruments 類型: 通道數(shù)量: 轉(zhuǎn)換速率:540 Mbps 分辨率: 封裝 / 箱體:SOIC-16 封裝:Tube |
| TMC22052AKHC | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Multistandard Digital Video Decoder Three-Line Adaptive Comb Decoder Family, 8 & 10 bit |
| TMC22053AKHC | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TMC22053KHC | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Fairchild Semiconductor Corporation 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。