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參數資料
| 型號： | W90220F |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 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： | 32-BIT, 150 MHz, RISC PROCESSOR, PQFP208 |
| 封裝： | PLASTIC, QFP-208 |
| 文件頁數： | 49/79頁 |
| 文件大小： | 501K |
| 代理商： | W90220F |
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W90220F
49
The above information is the exclusive intellectual property of Winbond Electroncs Corp. and shall not be dsiclosed or distributed or reproduced without permission from
Version 0.84
Winbond.
Bit 7
"Command" pended
0 = Command Register (CMD) contains no command code
1 = A command code is in CMD not been transfered yet
This read-only register reflects the inputs on the Parallel Port Interface and some of device data
FIFO and Command Register status.
Device Control Register (DCR)
Port address : 0xf000037a
Read/write
Power-on Default : 0x0
0
1
2
3
4
5
6
7
Reserved
DOE
nAck_Ien nSELIN#
nINIT
nAUFD#
nSTB#
Bit 2
Data bus output enable
0 = Data bus is drived by PPI for forward transfering
1 = Data bus is drived by peripheral device for reverse transfering
This bit has no effects during "peripheral emulation mode", "standard mode",
"fast standard mode" and "PS2 mode".
Bit 3
nACK interrupt enable
0 = Data bus is drived by PPI for forward transfering
1 = Data bus is drived by peripheral device for reverse transfering
When this bit is set. A low-to-high transition will generate a interrupt request to CPU core.
Bit 4
Complement version of Parallel Port Interface "nSelectIn" signal
Bit 5
Version of Parallel Port Interface "nInit" signal
Bit 6
Complement version of Parallel Port Interface "nAutoFd" signal
Bit 7
Complement version of Parallel Port Interface "nStrobe" signal
This register directly controls several output signals as well as enabling some functions. The power-
on default "0x0" makes {nSelectIn, nInit, nAutoFd, nStrobe} in {high, low, high, high} state, and
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