參數(shù)資料
型號: SAA7118
廠商: NXP Semiconductors N.V.
英文描述: Multistandard video decoder with adaptive comb filter and component video input
中文描述: 多標(biāo)準視頻解碼器與自適應(yīng)梳狀濾波器和分量視頻輸入
文件頁數(shù): 52/169頁
文件大?。?/td> 665K
代理商: SAA7118
2001 May 30
52
Philips Semiconductors
Preliminary specification
Multistandard video decoder with adaptive
comb filter and component video input
SAA7118
Remark
: Due to bandwidth considerations XPSC[5:0] and
XACL[5:0] can be chosen different to the previously
mentioned equations or Table 12, as the H-phase scaling
is able to scale in the range from zooming up by factor 3 to
downscale by a factor of
1024
8191
.
Figs 33 and 34 show some resulting frequency
characteristics of the prescaler.
Table 12 shows the recommended prescaler
programming. Other programmings, other than given in
Table 12, may result in better alias suppression, but the
resulting DC gain amplification needs to be compensated
by the BCS control, according to the equation:
Where:
2
XDCG[2:0]
DC gain
DC gain = (XC2_1 + 1)
×
XACL[5:0] + (1
XC2_1).
For example, if XACL[5:0] = 5, XC2_1 = 1, then the
DC gain = 10 and the required XDCG[2:0] = 4.
The horizontal source acquisition timing and the
prescalingratioisidenticalforboththeluminancepathand
chrominance path, but the FIR filter settings can be
defined differently in the two channels.
Fade-in and fade-out of the filters is achieved by copying
an original source sample each as first and last pixel after
prescaling.
Figs 31 and 32 show the frequency characteristics of the
selectable FIR filters.
CONT[7:0]
SATN[7:0]
lower integer of
XDCG[2:0]
64
×
DC gain
=
=
Table 11
FIR prefilter functions
PFUV[1:0] A2H[7:6]
PFY[1:0] A2H[5:4]
LUMINANCE FILTER COEFFICIENTS
CHROMINANCE COEFFICIENTS
00
01
10
11
bypassed
1 2 1
bypassed
1 2 1
3 8 10 8 3
1 2 2 2 1
1 1 1.75 4.5 1.75 1
1
1 2 2 2 1
相關(guān)PDF資料
PDF描述
SAA7118E Multistandard video decoder with adaptive comb filter and component video input
SAA7118H Multistandard video decoder with adaptive comb filter and component video input
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SAA7118E 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard video decoder with adaptive comb filter and component video input
SAA7118E/V1,518 功能描述:視頻 IC COMPONENT VID DECODER W/COMB F RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel
SAA7118E/V1,551 功能描述:視頻 IC COMPONENT VID DECODER W/COMB F RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel
SAA7118E/V1,557 功能描述:視頻 IC COMPONENT VID DECODER W/COMB F RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel
SAA7118E/V1/M5 功能描述:視頻 IC COMPONENT + VIDEO PROCESSOR RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel