參數(shù)資料
型號: CD1284
廠商: Intel Corp.
英文描述: IEEE 1284-Compatible Parallel Interface Controller with Two High-Speed Asynchronous Serial Ports
中文描述: 符合IEEE 1284兼容并行接口控制器兩個高速異步串行端口
文件頁數(shù): 136/176頁
文件大小: 2255K
代理商: CD1284
CD1284
IEEE 1284-Compatible Parallel Interface Controller
136
Datasheet
7.6.10
Transmit Clock Option Register
The TCOR selects the clock source which drives the TBPR. The value in ClkSel[2:0] selects one of
five possible clocks generated from the master clock (CLK).
7.7
Channel Registers
Parallel Pipeline
7.7.1
Data Error Register
The bits in this read-only register indicate read/write errors involving the DMABUF register and
the Data Pipeline registers. The DataErr bit (PFSR[0]) is the logical OR of these eight Error Status
bits.
Reading this register has no effect on the error status. A write to this register clears all the bits,
which cannot be written by the user. Host software should clear this register (write x
00) after
completing an error service-acknowledge procedure. This bit is provided primarily as an aid to
driver software development. Data errors should never occur under normal circumstances.
This register is cleared during device reset.
Register Name: TCOR
Register Description: Transmit Clock Option
Access: Read/Write
Bit 7
Bit 6
X
X
8-Bit Hex Address: 76
Default Value: 01
Bit 5
X
Bit 4
X
Bit 3
X
Bit 2
ClkSel2
Bit 1
ClkSel1
Bit 0
ClkSel0
ClkSel2
ClkSel1
ClkSel0
Clock Selected
0
0
0
Clk0 (CLK
÷
8)
0
0
1
Clk1 (CLK
÷
32)
0
1
0
Clk2 (CLK
÷
128)
0
1
1
Clk3 (CLK
÷
512)
1
0
0
Clk4 (CLK
÷
2048)
1
0
1
Not used.
1
1
0
1
1
1
Register Name: DER
Register Description: Data Error
Access: Read only
Bit 7
DMAwrerr
8-Bit Hex Address: 33
Default Value: 00
Bit 6
Bit 5
Bufwrerr
Bit 4
Bufrderr
Bit 3
Bit 2
Bit 1
Bit 0
DMArderr
HR1wrerr
HR1rderr
HR2wrerr
HR2rderr
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