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): 44/176頁
文件大?。?/td> 2255K
代理商: CD1284
CD1284
IEEE 1284-Compatible Parallel Interface Controller
44
Datasheet
NegCh for negotiation changes
SigCh for signal changes on the port status inputs (Manual mode only)
EPPAW for EPP protocol address writes
DirCh for direction changes on the parallel channel
IDReq for slave ID requests from the remote master.
nINIT for initialization pulses from the master (Compatibility mode only)
Any or all of these bits may be set, based on the mode of operation.
The NegCh interrupt is issued whenever the remote master performs a protocol change, such as
moving from Compatibility mode to ECP; the CPU examines the NSR to determine the new state
of the parallel interface. Signal changes can be identified by reading the SSR. In response to the
EPPAW interrupt, the CPU would read the EAR to retrieve the value that was written during the
EPP address write cycle.
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