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OR3C80 Datasheet(PDF) 96 Page - Agere Systems

Part # OR3C80
Description  3C and 3T Field-Programmable Gate Arrays
PDF  210 Pages
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Manufacturer  AGERE [Agere Systems]
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OR3C80 Datasheet(HTML) 96 Page - Agere Systems

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96
Lucent Technologies Inc.
Data Sheet
June 1999
ORCA Series 3C and 3T FPGAs
FPGA Configuration Modes (continued)
5-5764(F)
Figure 60. Readback Through MPI
ENABLE MICROPROCESSOR
SET READBACK ADDRESS
WRITE RD_CFG TO 0
DATA_RDY = 1?
READ DATA REGISTER
START OF FRAME
DATA = 0xFF?
YES
YES
READ STATUS REGISTER
IN CONTROL REGISTER 1
INTERFACE IN USER MODE
READ DATA REGISTER
FOUND?
READ UNTIL END OF FRAME
FINISHED
READBACK?
YES
YES
WRITE RD_CFG
CONTROL
STOP
NO
NO
ERROR
NO
ERROR
NO
READ DATA REGISTER
DATA = 0xFF?
YES
NO
ERROR
TO 1 IN
REGISTER 1



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