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參數(shù)資料
| 型號： | SAA4960 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 信號分離 |
| 英文描述： | Integrated PAL comb filter |
| 中文描述： | Y/C SEPARATOR IC, PDIP28 |
| 封裝： | 0.600 INCH, PLASTIC, DIP-28 |
| 文件頁數(shù)： | 8/24頁 |
| 文件大?。?/td> | 194K |
| 代理商： | SAA4960 |
1996 Oct 15
8
Philips Semiconductors
Preliminary specification
Integrated PAL comb filter
SAA4960
The input signals of the control and clock processing
(CLOCK CONTROL) are:
H
DET
: analog horizontal pulse from sync separator
V
DET
: analog vertical pulse from sync separator
FSC: subcarrier frequency (f
sc
or 2
×
f
sc
)
FSCSW: reference frequency selection
BYP: BYPASS control signal
SSYN: vertical synchronous mode selection for BYP
and polarity selection of BYP.
The output signals are:
CL3: system clock (3
×
f
sc
)
HSEL’s: line start signals for the delay lines
STOPS: forces the comb filter via the switches S2A,
S2B and S2C into the BYPASS-mode (always
asynchronous) or COMB-mode (synchronous or
asynchronous with V
INT
; depending on SSYN)
COMBENA: HIGH during COMB-mode; otherwise
LOW.
Table 10
Function of STOPS signal
H
ORIZONTAL AND VERTICAL SYNC SEPARATOR
A build-in sync separator circuit generates the H
DET
and
V
DET
signals from the Y
ext
/CVBS input signal. This circuit
is still working properly at input signals with a 12 dB
attenuated sync in a normal 700 mV black-to-white video
signal (see Fig.4).
C
LAMP
The black level clamping of the video input signal is
performed by the sync separator stage. The clamping level
is nearly adequate to the voltage at REFDL (pin 24).
S
IGNAL SWITCH
S1
The switch is included to bypass the low-pass input filter.
For the CVBS input of the delay line block two signals can
be selected via the slow signal switch S1.
STOPS-STATE
SELECTED MODE
LOW
HIGH
COMB
BYPASS
Table 11
Function of signal switch S1
S
IGNAL SWITCH
S2A
For the CVBSO output two signals can be selected via the
signal switch S2A.
Table 12
CVBSO output signal
S
IGNAL SWITCHES
S2B
AND
S2C
Two switches are included to bypass the comb filter signal
processing. The input video signal C
ext
for the switch S2C
is internally biased.
For the Y
O
output two signals can be selected via S2B.
Table 13
Y
O
output signal
For the C
O
output two signals can be selected via S2C.
Table 14
C
O
output signal
LPFION-STATE
DELAY LINE INPUT
LOW
non-pre-filtered input signal
Y
ext
/CVBS
pre-filtered input signal Y
ext
/CVBS
pre-filtered input signal Y
ext
/CVBS
HIGH
Floating
STOPS-STATE
CVBSO OUTPUT
SIGNAL
MODE
LOW
HIGH
delayed input CVBSDL
non-delayed input
Y
ext
/CVBS
COMB
BYPASS
STOPS-STATE
Y
O
OUTPUT SIGNAL
YCOMB
(combed luminance)
input Y
ext
/CVBS
MODE
LOW
COMB
HIGH
BYPASS
STOPS-STATE
C
O
OUTPUT SIGNAL
CCOMB
(combed chrominance)
input C
ext
MODE
LOW
COMB
HIGH
BYPASS
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAA4963 | Integrated NTSC comb filter |
| SAA4963T | Integrated NTSC comb filter |
| SAA4970T | Economical video processing IC ECOBENDIC |
| SAA4974 | Besic without ADC |
| SAA4974H | Besic without ADC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA4963 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Integrated NTSC comb filter |
| SAA4963T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Integrated NTSC comb filter |
| SAA4970T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Economical video processing IC ECOBENDIC |
| SAA4974 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Besic without ADC |
| SAA4974H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Besic without ADC |
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