參數(shù)資料
型號(hào)： SAA7114
廠商： NXP Semiconductors N.V.
英文描述： PAL/NTSC/SECAM video decoder with adaptive PAL/NTSC combfilter, VBI-data slicer and high performance scaler
中文描述： PAL / NTSC制式/ SECAM視頻解碼器與自適應(yīng)PAL / NTSC制式梳狀濾波器，供血，數(shù)據(jù)限幅器和高性能縮放器
文件頁(yè)數(shù)： 138/147頁(yè)
文件大小： 759K
代理商： SAA7114
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2004 Mar 03
138
Philips Semiconductors
Product specification
PAL/NTSC/SECAM video decoder with adaptive PAL/NTSC
comb filter, VBI data slicer and high performance scaler
SAA7114
16.4
Scaler and interfaces
Table 132 shows some examples for the scaler
programming with:
prsc = prescale ratio
fisc = fine scale ratio
vsc = vertical scale ratio.
The ratio is defined as:
In the following settings the VBI data slicer is inactive.
To activate the VBI data slicer, VITX[1:0] 86H[7:6] has to
be set to ‘11’. Depending on the VBI data slicer settings,
the sliced VBI data is inserted after the end of the scaled
video lines, if the regions of VBI data slicer and scaler
overlaps.
To compensate the running-in of the vertical scaler, the
vertical input window lengths are extended by
2 to 290 lines, respectively 242 lines for XS, but the scaler
increment calculations are done with 288, respectively
240 lines.
16.4.1
T
RIGGER CONDITION
For trigger condition STRC[1:0] 90H[1:0] not equal to ‘00’.
If the value of (YO + YS) is greater than or equal to 262
(NTSC), respectively 312 (PAL) the output field rate is
reduced to 30 Hz, respectively 25 Hz.
Horizontal and vertical offsets (XO and YO) have to be
used to adjust the displayed video in the display window.
As this adjustment is application dependent, the listed
values are only dummy values.
16.4.2
M
AXIMUM ZOOM FACTOR
The maximum zoom factor is dependent on the back-end
data rate and therefore back-end clock and data format
dependent (8 or 16-bit output). The maximum horizontal
zoom is limited to approximately 3.5, due to internal data
path restrictions.
number of output pixel
--number of input pixel
16.4.3
E
XAMPLES
Table 132
Example of configurations
EXAMPLE
NUMBER
SCALER SOURCE AND REFERENCE EVENTS
INPUT
WINDOW
720
×
240 720
×
240 prsc = 1;
OUTPUT
WINDOW
SCALE
RATIOS
1
analog input to 8-bit I port output, with SAV/EAV codes, 8-bit
serial byte stream decoder output at X port; acquisition trigger
at falling edge vertical and rising edge horizontal reference
signal; H and V gates on IGPH and IGPV, IGP0 = VBI sliced
data flag, IGP1 = FIFO almost full, level
≥
24, IDQ qualifier
logic 1 active
analog input to 16-bit output, without SAV/EAV codes, Yon
I port, C
B
-C
R
on H port and decoder output at X port;
acquisition trigger at falling edge vertical and rising edge
horizontal reference signal; H and V-pulses on IGPH and IGPV,
output FID on IGP0, IGP1 fixed to logic 1, IDQ qualifier logic 0
active
X port input 8-bit with SAV/EAV codes, no reference signals on
XRH and XRV, XCLK as gated clock; field detection and
acquisition trigger on different events; acquisition triggers at
rising edge vertical and rising edge horizontal; I port output
8-bit with SAV/EAV codes like example number 1
X port and H port for 16-bit Y-C
B
-C
R
4 : 2 : 2 input (if no 16-bit
output selected); XRH and XRV as references; field detection
and acquisition trigger at falling edge vertical and rising edge
horizontal; I port output 8-bit with SAV/EAV codes, but Yonly
output
fisc = 1;
vsc = 1
2
704
×
288 768
×
288 prsc = 1;
fisc = 0.91667;
vsc = 1
3
720
×
240 352
×
288 prsc = 2;
fisc = 1.022;
vsc = 0.8333
4
720
×
288 200
×
80
prsc = 2;
fisc = 1.8;
vsc = 3.6
相關(guān)PDF資料
PDF描述
SAA7115 PAL/NTSC/SECAM Video Decoder with Adaptive PAL/NTSC Comb Filter, High Performance Scaler, I2C Sliced Data Readback and SQ PIXEL OUTPUT
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SAA7114E 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:PAL/NTSC/SECAM video decoder with adaptive PAL/NTSC comb filter, VBI data slicer and high performance scaler
SAA7114E/V2,518 功能描述:視頻 IC DIGITAL VIDEO 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
SAA7114H 制造商:NXP Semiconductors 功能描述: 制造商:Philips Semiconductor 功能描述:
SAA7114H/V2 制造商:NXP Semiconductors 功能描述:7114H/V2557
SAA7114H/V2,518 功能描述:視頻 IC DIGITAL VIDEO 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
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