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OR4E2 Datasheet(PDF) 69 Page - Agere Systems

Part # OR4E2
Description  Field-Programmable Gate Arrays
PDF  124 Pages
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Manufacturer  AGERE [Agere Systems]
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OR4E2 Datasheet(HTML) 69 Page - Agere Systems

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Lucent Technologies Inc.
69
Preliminary Data Sheet
December 2000
ORCA Series 4 FPGAs
FPGA Configuration Modes (continued)
5-5764(F)
Figure 43. Readback Through MPI
ENABLE MICROPROCESSOR
SET READBACK ADDRESS
WRITE RD_CFG TO 0
DATA_RDY = 1?
READ DATA REGISTER
START OF FRAME
INCREMENT ADDRESS
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?
COUNTER IN SOFTWARE
YES
YES
WRITE RD_CFG TO 1
IN CONTROL REGISTER 1
STOP
NO
NO
ERROR
NO
ERROR
NO
READ DATA REGISTER
DATA = 0xFF?
YES
NO
ERROR



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