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參數(shù)資料
型號: W83637HF
廠商: WINBOND ELECTRONICS CORP
英文描述: LPC I/O
中文描述: LPC的I / O
文件頁數(shù): 115/149頁
文件大小: 936K
代理商: W83637HF
W83637HF
Publication Release Date: June 25, 2003
- 110 -
Revision 1.3
8.3.2 Logical Device 1 (Parallel Port)
CR30 (Default 0x01 if PNPCSV = 0 during POR, default 0x00 otherwise)
Bit 7 - 1 : Reserved.
Bit 0
= 1 Activates the logical device.
= 0 Logical device is inactive.
CR60, CR 61 (Default 0x03, 0x78 if PNPCSV = 0 during POR, default 0x00, 0x00 otherwise)
These two registers select Parallel Port I/O base address.
[0x100:0xFFC] on 4 byte boundary (EPP not supported) or
[0x100:0xFF8] on 8 byte boundary (all modes supported, EPP is only available when the base address
is on 8 byte boundary).
CR70 (Default 0x07 if PNPCSV = 0 during POR, default 0x00 otherwise)
Bit 7 - 4 : Reserved.
Bit [3:0] : These bits select IRQ resource for Parallel Port.
CR74 (Default 0x04)
Bit 7 - 3 : Reserved.
Bit 2 - 0 : These bits select DRQ resource for Parallel Port.
0x00 = DMA0
0x01 = DMA1
0x02 = DMA2
0x03 = DMA3
0x04 - 0x07= No DMA active
CRF0 (Default 0x3F)
Bit 7
: Reserved.
Bit 6 - 3 : ECP FIFO Threshold.
Bit 2 - 0 : Parallel Port Mode (CR28 PRTMODS2 = 0)
= 100 Printer Mode (Default)
= 000 Standard and Bi-direction (SPP) mode
= 001 EPP - 1.9 and SPP mode
= 101 EPP - 1.7 and SPP mode
= 010 ECP mode
= 011 ECP and EPP - 1.9 mode
= 111 ECP and EPP - 1.7 mode.
相關(guān)PDF資料
PDF描述
W83637HF-AW LPC I/O
W83697HF WINBOND I/O
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