- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄372109 > SAA4956TJ (NXP SEMICONDUCTORS) 2.9-Mbit field memory with noise reduction PDF資料下載
參數(shù)資料
| 型號： | SAA4956TJ |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 存儲器 |
| 英文描述： | 2.9-Mbit field memory with noise reduction |
| 中文描述： | SPECIALTY MEMORY CIRCUIT, PDSO40 |
| 封裝： | PLASTIC, SOJ-40 |
| 文件頁數(shù)： | 15/36頁 |
| 文件大?。?/td> | 243K |
| 代理商： | SAA4956TJ |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁當(dāng)前第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁
1998 Dec 08
15
Philips Semiconductors
Preliminary specification
2.9-Mbit field memory with noise reduction
SAA4956TJ
Table 6
Write registers
REGISTER
BIT
NAME
DEFAULT
FUNCTION
Subregister 20H to 23H (Ksteps of the look-up tables of luminance and chrominance)
20H
0 to 3
4 to 7
0 to 3
4 to 7
0 to 3
4 to 7
0 to 3
4 to 7
Kstep0
Kstep1
Kstep2
Kstep3
Kstep4
Kstep5
Kstep6
Kstep7
2
3
4
6
4
6
4
6
step in adaptive curve from K =
1
16
to K =
1
8
; weight of 1
step in adaptive curve from K =
1
8
to K =
2
8
; weight of 1
step in adaptive curve from K =
2
8
to K =
3
8
; weight of 2
step in adaptive curve from K =
3
8
to K =
4
8
; weight of 2
step in adaptive curve from K =
4
8
to K =
5
8
; weight of 4
step in adaptive curve from K =
5
8
to K =
6
8
; weight of 4
step in adaptive curve from K =
6
8
to K =
7
8
; weight of 8
step in adaptive curve from K =
7
8
to K =
8
8
; weight of 8
21H
22H
23H
Subregister 24H (K-factor controls of luminance)
24H
0 to 3
4 to 6
Klumafix
Yadapt_gain
15
1
value of the fixed K-factor of the luminance; see Table 3
value of the gain of the adaptive curve of the luminance;
see Table 2
adaptive (lumafix = 0) or fixed K mode (lumafix = 1) of the
luminance
7
lumafix
0
Subregister 25H (K-factor controls of chrominance)
25H
0 to 3
4 to 6
Kchromafix
Cadapt_gain
15
1
value of the fixed K-factor of the luminance; see Table 3
value of the gain of the adaptive curve of the chrominance;
see Table 2
adaptive (chromafix = 0) or fixed K mode (chromafix = 1) of
chrominance
7
chromafix
0
Subregister 26H (miscellaneous)
26H
0
DPCMin
0
if HIGH: converts the chrominance input from DPCM to 4 : 2 : 2
format
if HIGH: converts the chrominance output from 4 : 2 : 2 to DPCM
format
if HIGH: uses luminance K-factor for chrominance path
if HIGH: band splitting is deactivated, complete difference signals
are used
if HIGH: noise shaping is activated
if HIGH: chrominance input signals U and V are inverted
if HIGH: demo mode is activated with noise reduction only at the
right screen side
1
DPCMout
0
2
3
Klumatochroma 0
unfiltered
0
4
5
6
noise_shape
chroma_invert
split_screen
1
0
0
7
reserved
Subregister 27H (miscellaneous)
27H
0
no_refresh
0
if HIGH: disables internal self-refresh to allow T
cy(SWCK)
= 29 ns
for PAN-IC
if HIGH: synchronizes the noise reduction via RSTW (split_screen
and DPCM not possible). Otherwise sync is line related detected
by WE 5 cycle LOW followed by a HIGH cycle.
1
field_sync
0
2 to 7
reserved
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAA4960 | Integrated PAL comb filter |
| SAA4963 | Integrated NTSC comb filter |
| SAA4963T | Integrated NTSC comb filter |
| SAA4970T | Economical video processing IC ECOBENDIC |
| SAA4974 | Besic without ADC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA4960 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Integrated PAL comb filter |
| 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。