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參數資料
| 型號： | SAA4945H |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | LIne MEmory noise Reduction IC LIMERIC |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP44 |
| 文件頁數： | 2/20頁 |
| 文件大?。?/td> | 116K |
| 代理商： | SAA4945H |
1997 Jun 10
2
Philips Semiconductors
Preliminary specification
LIne MEmory noise Reduction IC
(LIMERIC)
SAA4945H
FEATURES
2-D adaptive vertically recursive noise reduction
Noise reduction for Y, U and V signals in 4 : 1 : 1 format
Single 5 V
±
10% power supply
Communication by means of serial communication
protocol 83C654 (SNERT bus)
Via SNERT bus, 10 different types of noise reduction
selectable; the noise reduction function can also be
disabled
Phase relation write enable input/output signal
simultaneously switchable over one clock period w.r.t.
input/output samples
8-bit wide data processing for Y, U and V; in unsigned
format (Y signal) and in 2’s complement (U and V
signals)
One fixed line locked clock operation frequency up to
16 MHz (typical)
Exactly one line delay.
GENERAL DESCRIPTION
The SAA4945H, LIMERIC (LIne MEmory noise Reduction
IC) is a 2-D recursive noise reduction filter for both
luminance and colour difference signals. The noise
reduction is automatically adapted to the global noise level
in the image. Ten different preferences of noise reduction
can be set using a synchronous receiver transmitter bus;
SNERT (Synchronous No parity Eight bit Receive
Transmit) bus. Alternatively, the noise reduction can be
switched off. The LIMERIC is generally placed directly
after the ADC in the feature box and works fully in the 1f
h
(50/60 Hz) domain.
QUICK REFERENCE DATA
Note
1.
Maximum number of clocks per line is 1024.
ORDERING INFORMATION
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
DD
I
DD
P
f
CLK
f
SNERT
T
amb
supply voltage (pins 5, 29 and 30)
supply current
power dissipation
clock frequency
bus clock frequency
operating ambient temperature
4.5
10
0
5.0
70
350
16
5.5
17.1
1
70
V
mA
mW
MHz
MHz
°
C
±
7%; note 1
TYPE
NUMBER
PACKAGE
NAME
QFP44 plastic quad flat package; 44 leads (lead length 1.3 mm); body 10
×
10
×
1.75 mm SOT307-2
DESCRIPTION
VERSION
SAA4945H
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相關代理商/技術參數 |
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|---|---|
| SAA4951 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Memory controller |
| SAA4951WP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Memory controller |
| SAA4952WP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Memory controller |
| SAA4955 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2.9-Mbit field memory |
| SAA4955TJ | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2.9-Mbit field memory |
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