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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: 57/174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.
57
Versi on 0. 4, March/2000
(xo02d2 delay)
0
2
4
6
8
10
12
14
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
Bit 12 Always precharge all enable.
This bit set SDRAM state machine will always through precharge state and stop in idle state after
each SDRAM read/write access.
Bits 4-15 Reserved
6.2 VIDEO ACCELERATOR REGISTERS
Video accelerator (VA) is consisted of video pre- (VPRE) and post-engine (VPOST). The VPRE handls
the functions about alternative video inputs, like MPEG chips or camera. VPOST handles all the functions
about pictures displaying to TV (interlace) or monitor (non-interlace). There are totally 33 registers using to
set up all functions of VA, 28s are in VPOST with IO space of 0xf0000100 to oxf000019c, and 5s are in
VPRE with IO space of 0xf00001c0 to 0xf00001dc.
6.2.1 VPOST REGISTERS
There are twenty-eight registers, with IO space allocated from 0xf0000100 to 0xf000019c , included in the
VPOST.
Table : VPOST Register Map
(IO
base (BA) : 0xf0000000)
Port Addr.
Symbol
Access
Description
BA + 0x100
VPC
R/W
VPOST Control Register
BA + 0x104
OPWFSR
R/W
Background Stream Fetch Stop/Restart for
Opaque
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