S/UNI-IMA-4 Telecom Standard Product Data Sheet
Released
RIPP Group Context Record Memory
Purpose: Contains the current state machine states and status information for the corresponding
groups.
Usage: IMA Groups only.
Maintained by: RIPP.
Record Size: 16 32-bit words.
MEM_ADDR = Area_base_address + Group_tag * 0x10 + Word Offset
Unless otherwise specified, all data and the reserved fields should be cleared (to all ‘0’s) by PM
prior to adding the group; they will be cleared by RIPP during a group restart process
Table 12 RIPP Group Context Record Structure
WORD
BIT
DATA FIELD
DESCRIPTION
0
31
GROUP_EN
Indicates if the current group is enabled. This bit
is set by PM using the add_group command,
and cleared by PM using the Delete_group
command.
‘0’: not enabled (group in NOT_CONFIGURED
state)
‘1’: the group is enabled and currently active.
This field will remain at its current value during
a group-restart.
30:27
GSM
Group state machine state.
“0000”: Start-up
“0001”: Start-up-Ack
“0010”: Config-Aborted – Unsupported M
“0011”: Config-Aborted – Incompatible group
symmetry
“0100”: Config-Aborted – Unsupported IMA
versions
“0111”: Config-Aborted – Other reasons
“1000”: Insufficient-links
“1001”: Blocked
“1010”: Operational
Others: Reserved
26:24
23
RESERVED
GTSM
Group traffic state machine state
“0”: down (no ATM data transmission is
allowed)
“1”: up (ATM data transmission is allowed)
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2020889, Issue 2
164
PMC [ PMC-SIERRA, INC ]
