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SCD1283 Datasheet(PDF) 48 Page - Intel Corporation

No. de pieza SCD1283
Descripción Electrónicos  IEEE 1284-Compatible Parallel Interface
PDF  94 Pages
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Fabricante Electrónico  INTEL [Intel Corporation]
Página de inicio  http://www.intel.com
Logo INTEL - Intel Corporation

SCD1283 Datasheet(HTML) 48 Page - Intel Corporation

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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
µsec. 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
RCR
= 0
?
N
Y
THIS BY ONE; FOR EXAMPLE,
REVISION F WOULD BE 26, ETC.
NECESSARY, WILL INCREMENT
CLEAR
GFRCR



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