PM7312 pmc-sierra, PM7312 Datasheet - Page 20

• Manufacturer Part Number: PM7312
• Description: Freedm 32a1024l Assp Telecom Standard Datasheet
• Manufacturer: pmc-sierra

Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2021833, Issue 2
2.4
2.5
Frame Relay Features
Statistics
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o Capable of supporting fragment sizes from 4 to 9.6K bytes with the restriction that the
o 10-bit DLCI format supported for channels operating in Frame Relay mode. Alternative
o The lookup algorithm can support a maximum of 16K connection identifiers (CIs) amongst
o FRF.16 Control Frames (Link Integrity Protocol) are identified and forwarded to the Any-
o Support for 3 egress fragmentation sizes (128, 256, and 512 bytes) configurable per
o 12 bit sequence numbers supported.
o Support for fragmentation on a single HDLC channel. (Note – End-to-End fragmentation
o 16 bundles in ingress direction. These bundles are composed of independent HDLC
o 16 bundles in egress direction. These bundles are composed of independent HDLC
o Support for up to 100ms intra-bundle skew within the limits of 12-bit sequence number
o Up to 12 member links per bundle.
o CRC Errors observed by the HDLC framer.
o HDLC framing aborts.
o Non-Octet aligned frames.
o HDLC MRU exceeded.
o Bytes and datagrams received.
o Bytes and datagrams transmitted.
Link layer address lookup can be performed based on HDLC or Any-PHY channel and DLCI
for HDLC channels supporting Frame Relay protocols.
Capable of supporting line rate transfers of frame sizes from 40 to 9.6K bytes.
FRF.16 Multi-link FR bundles and FRF.12 UNI, NNI or End-to-End fragmentation:
FREEDM 32A1024L maintains the following counters on a per-HDLC channel basis:
Additionally, the FREEDM 32A1024L provides the following counters per Ingress CI:
maximum number of fragments per packet is 81.
DLCI formats supported when the lookup is based on HDLC channel only.
all channels in use.
PHY interface
connection. Optionally, full packet transfers are supported on a per connection basis.
is only supported on single HDLC channels, not multilink bundles.)
channels.
channels.
capabilities when supporting the minimum fragment size. Capable of supporting larger
skews (<400ms) with larger fragment sizes.
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Each member link is required to operate at the same speed. Either T1/J1 or E1
rates.
Each member link operates at the same speed either T1/J1 or E1.
FECN, BECN, and DE ingress processing as per FRF.12. The C/R value passed out
in frame out mode is the value received on the Begin fragment.
FREEDM 32A1024L ASSP Telecom Standard Product Data Sheet
Released
20