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參數資料
型號: W90221F
廠商: WINBOND ELECTRONICS CORP
英文描述: PA-RISC Embedded Micro-Controller(惠普PA-RISC結構的32位嵌入式微控制器)
中文描述: PA - RISC的嵌入式微控制器(惠普的PA - RISC結構的32位嵌入式微控制器)
文件頁數: 24/174頁
文件大小: 2102K
代理商: W90221F
=
The above information is the exclusive intellectual property of Winbond Electronics and shall not be disclosed, distributed or reproduced without permission from Winbond.
24
Versi on 0. 4, March/2000
CS#
WE#
MCLK
Fig 5.4.3 Fastest EDO memory write/read cycle (32 bits)
MCLK
DQMB
MA[13:0]
MD[0:31]
wdata 2
wdata 3
wdata 4
rdata 1
rdata 2
rdata 3
rdata 4
waddr.2
waddr.1
waddr.3
waddr.4
raddr. 1
raddr. 2
raddr. 3
raddr. 4
wdata 1
RAS#
WE#
Fig 5.4.4 Fastest SDRAM memory write/read cycle (32 bits)
CAS#
MA[13:0]
MD[0:31]
col. 1
row
col. 3
CS#
col. 2
col. 4
col. 1
col. 3
col. 2
col. 4
wd. 1
wd. 3
wd. 2
wd. 4
rd. 1
rd. 3
rd. 2
rd. 4
5.5 VIDEO ACCELERATOR (VA)
Overview :
Display Controller controls the display timing and data to meet the requirements of display devices. The
display controller of W90221 supports RGB monitor output and S-Video, RCA-style composite TV output.
Pseudo color and high-color mode are used for graphics data. The pseudo color modes include 4-clor, 16-
color and 256-color mode, while the high color mode is 565. Furthermore, W90221 supports the opaque
function to save data bandwidth. This Display Controller includes the following modules
to complete its
functions
: FIFO and Flicker-Free filter, Color Space Conversion, Overlay Control, Tune, CRTC, WIN-
KEY, TV-Encoder
Block Diagram :
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