PM7311 pmc-sierra, PM7311 Datasheet - Page 145
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PM7311
Manufacturer Part Number
PM7311
Description
Freedm 84a1024l Assp Telecom Standard Datasheet
Manufacturer
pmc-sierra
Datasheet
1.PM7311.pdf
(296 pages)
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Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2021832, Issue 2
CRC[1:0]
PROV
The CRC algorithm (CRC[1:0]) configures the HDLC processor to perform CRC generation
on the outgoing HDLC data stream. The value of CRC[1:0] to be written to the channel
provision RAM, in an indirect channel write operation, must be set up in this register before
triggering the write. CRC[1:0] is ignored when DELIN is low. CRC[1:0] reflects the value
written until the completion of a subsequent indirect channel read operation.
Table 19 CRC[1:0] Settings
The indirect provision enable bit (PROV) reports the channel provision enable flag read from
the channel provision RAM after an indirect channel read operation has completed. The
provision enable flag to be written to the channel provision RAM, in an indirect write
operation, must be set up in this register before triggering the write. When PROV is set high,
the HDLC processor will service requests for data from the TCAS-12 block. When PROV is
set low, the HDLC processor will ignore requests from the TCAS-12 block. PROV reflects
the value written until the completion of a subsequent indirect channel read operation.
CRC[1]
0
0
1
1
CRC[0]
0
1
0
1
Operation
No CRC
CRC-CCITT
CRC-32
Reserved
FREEDM 84A1024L ASSP Telecom Standard Product Data Sheet
Released
145
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