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參數(shù)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(shù): 113/174頁
文件大小: 2102K
代理商: W90221F
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The above information is the exclusive intellectual property of Winbond Electronics and shall not be disclosed, distributed or reproduced without permission from Winbond.
113
Versi on 0. 4, March/2000
Bit 3
DMA Terminal-Count Interrupt (Irpt_TC) enable
0 = Mask Irpt_TC
1 = Enable Irpt_TC
Bit 4
Dfifo Empty Interrupt (Irpt_TEMP) enable
0 = Mask Irpt_TEMP
1 = Enable Irpt_TEMP
Bit 5
Dfifo Read Threshold Interrupt (Irpt_RDA) enable
0 = Mask Irpt_RDA
1 = Enable Irpt_RDA
Bit 6
"nFault" Interrupt (Irpt_nFault) enable
0 = Mask Irpt_nFault
1 = Enable Irpt_nFault
Bit 7
Loop back enable
0 = Loop-back disable
1 = Loop-back enable
During Loop-Back mode, {nStrobe, nAutoFd, nInit, nSelectIn} will be fed to
{nAck, Busy, PError, nFault} internally. This mode is used only for test issue.
Interrupt Identification Register (IIR)
Port address : 0xf000037e
Read only
Power-on Default : ---
0
1
2
3
4
5
6
7
Reserved
Irpt_Tout Irpt_TC Irpt_Tem
p
Irpt_RDA Irpt_nFaul
t
Irpt_nAck
Bits 2 Time-Out Interrupt flag
"Set" situation : If IER[2] is set, and "Time out" is occured during parallel port
transferring.
"Reset" situation
: Reset device, or CPU reads Time-Out Register (TOR) or Dfifo
being accessed either by CPU or parallel port interface transferring.
Bits 3 DMA Terminal Count Interrupt flag
"Set" situation : If IER[3] is set, and TC is asserted by DMA controller once DMA
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