參數(shù)資料
型號(hào): CD1283
廠商: Intel Corp.
英文描述: IEEE 1284-Compatible Parallel Interface
中文描述: 符合IEEE 1284兼容并行接口
文件頁(yè)數(shù): 48/94頁(yè)
文件大?。?/td> 1237K
代理商: CD1283
CD1283
IEEE 1284-Compatible Parallel Interface
48
Datasheet
useful in slow systems that cannot guarantee that the CPU can check the register after it is
cleared or before it is loaded with the revision code.
This procedure is also used as part of a diagnostic test suite. The device completes internal
initialization within 500
μ
sec. A timer (software or hardware) detects when the operation is not
completed within that time and cues if the device is functional.
Figure 15. Flow Diagram of the CD1283 Master Initialization Sequence
GFRCR
= 0
ISSUE RESET
COMMAND
N
Y
GFRCR
= 25*
N
Y
CONTINUE
INIT PROCESS
* REVISION CODE FOR
REVISION E DEVICE = 25
FUTURE REVISIONS, IF
NECESSARY, WILL INCREMENT
RCR
= 0
N
Y
THIS BY ONE; FOR EXAMPLE,
REVISION F WOULD BE 26, ETC.
CLEAR
GFRCR
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