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參數(shù)資料
| 型號： | W9925QF-K |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 消費家電 |
| 英文描述： | A High Performance Single-Chip VCD Decoder(高性能的單片VCD解碼器) |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
| 封裝： | PLASTIC, QFP-100 |
| 文件頁數(shù)： | 3/11頁 |
| 文件大?。?/td> | 177K |
| 代理商： | W9925QF-K |
Preliminary
W9925QF-K
Publication Release Date: April, 1998
Revision 1.0
- 3 -
Host may get bitstream information stored in DRAM by this command. When the command is issued,
a specific DRAM address should be placed in ARG0 and ARG1. W9925QF will respond by copy the
content of this specified address to ARG2 and inform host via CACK. The content of DRAM address
+1 and DRAM address + 2 are copied to ARG1 and ARG0 as well.
ARG1(2:0)
ARG0
DRAM address bit 18-16
write
DRAM address bit 15-0
write
ARG0
ARG1
ARG2
DRAM content of
address+2
read
DRAM content of
address+1
read
DRAM content of address
read
Important Notes for DCMR commands
Horizontal_Interpolation of VCR (VCR[5]) should be disabled in 9 frame mode and enabled in 4
frame mode.
In DIGEST mode, CLIP command will be issued automatically by W9925QF-K. HCW set to 352 and
VCW set to 240 for NTSC or 288 for PAL, which depend on the Display Target system.
VCW of Clip Command in Still Picture Decoding Mode
The programming method of Clip Command in W9925QF-K is same as its previous version except
that the VCW should be a value dividable by 5. Otherwise, customer may find the last line on screen
output is not correct.
8.3 Video Control Registers
The purpose of this modification of video register is to control the conversion of NTSC sources played on PAL
systems more easily. In previous versions, users need to issue commands to carry out the conversion. W9925QF-K
can automatically detect the bitstream type and do the necessary resize operations to fill the entire screen, depends
on what television system is being used.
Video Configuration Register
index: A5h
read/write
bit(15:11)
not used
x
bit(6)
TEST1
0
bit(10)
AUTORS
0
bit(5)
HIE
0
bit(9)
TV-NTSC
0
bit(4)
FTEN
0
bit(8)
HI-RES
0
bit(3)
VIE
0
bit(7)
TEST0
0
bit(2)
NT2PAL
0
bit(1)
YSWP
0
bit(0)
USWP
0
AUTORS
Enables W9925QF-K to fill out display screen according to input bitstream format. When this bit is set
to "1", bit(2) in this register (NT2PAL) will be ignored. Setting AUTORS=0 will disable auto-resize
function.
TV-NTSC
Indicates which TV system is used. "1" for NTSC and "0" for PAL.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| W9925 | CONTACT |
| W9925PF | MPEG-1 A/V SYSTEM DECODER |
| W9951TF | TRIP 8-BIT DAC-MUXWITHGENLOCK PLL & ANALOG COLOR KEY |
| W9952 | TV ENCODER |
| W9952QP | TV ENCODER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W9945RC | 制造商:Winslow Adaptics Ltd 功能描述:SSOP20/20 DIP programming adaptor |
| W9950P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| W9951TF | 制造商:WINBOND 制造商全稱:Winbond 功能描述:TRIP 8-BIT DAC-MUXWITHGENLOCK PLL & ANALOG COLOR KEY |
| W9952 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:TV ENCODER |
| W9952QP | 制造商:WINBOND 制造商全稱:Winbond 功能描述:TV ENCODER |
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