參數(shù)資料
型號: SAA7120H
廠商: NXP SEMICONDUCTORS
元件分類: 顏色信號轉換
英文描述: Digital video encoder
中文描述: COLOR SIGNAL ENCODER, PQFP44
封裝: 10 X 10 MM, 1.75 MM HEIGHT, PLASTIC, SOT-307-2, QFP-44
文件頁數(shù): 9/36頁
文件大?。?/td> 165K
代理商: SAA7120H
2002 Oct 11
9
Philips Semiconductors
Product specification
Digital video encoder
SAA7120H; SAA7121H
7.5
I
2
C-bus interface
The I
2
C-bus interface is a standard slave transceiver,
supporting 7-bit slave addresses and 400 kbits/s
guaranteed transfer rate. It uses 8-bit subaddressing with
an auto-increment function. All registers are write only,
except one readable status byte.
The I
2
C-bus slave address is defined as 88H with pin 21
(SA) tied LOW and as 8CH with pin 21 (SA) tied HIGH.
7.6
Input levels and formats
The SAA7120H; SAA7121H expects digital Y, C
B
and C
R
data with levels (digital codes) in accordance
with “CCIR 601”
For C and CVBS outputs, deviating amplitudes of the
colour difference signals can be compensated by
independent gain control setting, while gain for luminance
is set to predefined values, distinguishable for 7.5 IRE
set-up or without set-up.
Reference levels are measured with a colour bar,
100% white, 100% amplitude and 100% saturation.
Table 1
“CCIR 601”signal component levels
COLOUR
SIGNALS
Y
C
B
128
16
166
54
202
90
240
128
C
R
128
146
16
34
222
240
110
128
White
Yellow
Cyan
Green
Magenta
Red
Blue
Black
235
210
170
145
106
81
41
16
Table 2
8-bit multiplexed format (similar to “CCIR 601”)
TIME
BITS
0
1
2
3
4
5
6
7
Sample
Luminance pixel number
Colour pixel number
C
B
0
Y0
C
R
0
Y1
C
B
2
Y2
C
R
2
Y3
0
1
2
3
0
2
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相關代理商/技術參數(shù)
參數(shù)描述
SAA7120H-01 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital Video Encoder (ConDENC)
SAA7121 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital Video Encoder (ConDENC)
SAA7121H 制造商:NXP Semiconductors 功能描述:
SAA7121H/V2 制造商:NXP Semiconductors 功能描述:
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