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參數資料
型號: W83697HF
廠商: WINBOND ELECTRONICS CORP
元件分類: 外設及接口
英文描述: WINBOND I/O
中文描述: MULTIFUNCTION PERIPHERAL, PQFP128
封裝: PLASTIC, QFP-128
文件頁數: 82/167頁
文件大小: 1094K
代理商: W83697HF
W83697HF/F
Publication Release Date: Feb. 2002
Revision 0.70
- 73 -
6.3.5 cFifo (Parallel Port Data FIFO) Mode = 010
This mode is defined only for the forward direction. The standard parallel port protocol is used by a
hardware handshake to the peripheral to transmit bytes written or DMAed from the system to this FIFO.
Transfers to the FIFO are byte aligned.
6.3.6 ecpDFifo (ECP Data FIFO) Mode = 011
When the direction bit is 0, bytes written or DMAed from the system to this FIFO are transmitted by a
hardware handshake to the peripheral using the ECP parallel port potocol. Transfers to the FIFO are
byte aligned.
When the direction bit is 1, data bytes from the peripheral are read under automatic hardware handshake
from ECP into this FIFO. Reads or DMAs from the FIFO will return bytes of ECP data to the system.
6.3.7 tFifo (Test FIFO Mode) Mode = 110
Data bytes may be read, written, or DMAed to or from the system to this FIFO in any direction. Data in
the tFIFO will not be transmitted to the parallel port lines. However, data in the tFIFO may be displayed
on the parallel port data lines.
6.3.8 cnfgA (Configuration Register A) Mode = 111
This register is a read-only register. When it is read, 10H is returned. This indicates to the system that
this is an 8-bit implementation.
6.3.9 cnfgB (Configuration Register B) Mode = 111
The bit definitions are as follows:
7 6 5 4 3 2 1 0
1 1 1
intrValue
compress
IRQx 0
IRQx 1
IRQx 2
Bit 7: This bit is read-only. It is at low level during a read. This means that this chip does not support
hardware RLE compression.
Bit 6: Returns the value on the ISA IRQ line to determine possible conflicts.
相關PDF資料
PDF描述
W83697 WINBOND I/O
W83697F WINBOND I/O
W83697SF WINBOND I/O
W83757 SUPER I/O CHIP
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相關代理商/技術參數
參數描述
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