PM7340 S/UNI-IMA-8
PRELIMINARY
INVERSE MULTIPLEXING OVER ATM
DATA SHEET
PMC-2001723
ISSUE 3
INVERSE MULTIPLEXING OVER ATM
Register 0x306: RDAT Indirect Memory Data MSB
Bit
Type
Function
Default
15:0
R/W
MEM_DATA_MSB
0
This register should not be written while the MEM_BUSY bit is set.
MEM_DATA_MSB:
The MEM_DAT_MSB represents either: (1) the most significant 16 bits of the
data to be written to internal memory or (2) the most significant 16 bits of the
read data resulting from the previous read operation. The read data is not
valid until after the MEM_BUSY bit has been cleared by the RDAT. The actual
definition of each memory table is described below.
RDAT Link Statistics Memory
The link statistics memory is maintained by RDAT; it stores pertinent cell and
event counts for each link. Each cell may cause the oif_anomalies count to be
incremented, and also may cause one and only one of the other counters to be
incremented. All counters roll over unless otherwise noted. Each record is 4
words deep by 32 bits wide (each word contains two counts for IMA links, one
count for TC Links); they are addressed by the physical link number.
MEM_ADDR = (Physical Link Number X 4) + Word Offset
Table 21
RDAT Link Statistics Record (IMA)
Parameter Description
Word Bits
0
31:16 stuff_events
Count of the number of stuff events
received on this link.
15:0
oif_anomalies
Count of the number of times this link has
transitioned from the IMA Sync state to
the IMA Hunt state in the IFSM.
1
31:16 icp_violations
Count of HEC errored, OCD errored,
invalid, or missing ICP cells received on
this link. This also includes valid ICP
cells received at unexpected positions.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
219
PMC [ PMC-SIERRA, INC ]
