參數(shù)資料
型號: 935206750557
廠商: NXP SEMICONDUCTORS
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP80
封裝: PLASTIC, SOT-318, QFP-80
文件頁數(shù): 6/30頁
文件大小: 230K
代理商: 935206750557
1996 Oct 25
14
Philips Semiconductors
Preliminary specication
Progressive scan-Zoom and Noise
reduction IC (PROZONIC)
SAA4990H
Table 3
Read registers
Table 4
Output multiplex control
Table 5
Filter1 characteristic
REGISTER
BIT
NAME
Register 26H (MPD_LSB)
26H
0 to 7
MPD_LSB
Register 27H (MPD_MSB)
27H
0 to 7
MPD_MSB
output_mux[2:0]
THROUGHPUT
000
video
011
grey
111
sawtooth
Tlter1_select[1:0]
Tlter1-TRANSFER (z)
00
1
01
1
2 × z+1+ 12 × z1
10
1
2
11
1
2 × z+ 12 + 12 × z1
Table 6
Adaptive/xed_k selection
Dynamic box signal, active in user dened rectangular
part of the picture, enable with en_box, may be inverted
with inv_box.
Note
1. X = don’t care bits.
_upbox
_adx
box
k
00
X(1)
adapt
00
X(1)
adapt
01
X(1)
xed
01
X(1)
xed
1X(1)
0
xed
1X(1)
1
adapt
1X(1)
0
xed
1X(1)
1
adapt
Fig.8 Characteristic pre-filter TF1.
TF1(z) = 1
2 z+a+ 12 z1.
(1) a = 1.
(2) a = 1
2.
handbook, halfpage
25
20
15
10
5
0
(1)
(2)
5
10
15
1/4 fs
1/2 fs
MGE035
IH_TF1I
(dB)
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