S/UNI-IMA-4 Telecom Standard Product Data Sheet
Released
WORD
BIT
DATA FIELD
DESCRIPTION
22:21
GWP_Active
Group-wide procedure in progress.
“00”: No group-wide procedure is currently in
progress.
“01”: Group start-up procedure is in progress.
“10”: LASR is in progress.
Others: reserved
20
19
reserved
LSM_SYNC_TRANS
Indicates whether there has been a transition
on the LSM_SYNC state machine in the last
processing cycle for the group.
‘0’: There was no transition.
‘1’: There was a transition.
18:16
LSM_SYNC
Current state of LSM_SYNC state machine,
which is used to synchronize LSM transition
during group startup and LASR procedure.
"000": IDLE
"001": LSM_SYNC_GETM (Group parameter
negotiation finished).
"010": LSM_SYNC_RX_USABLE (RX ready to
go to usable state, delay evaluation needed).
"011": LSM_SYNC_RX_ACTIVE_RDAT (RX
ready to start receiving, starting RDAT and
IDCC)
"100": LSM_SYNC_RX_ACTIVE (RX ready to
report ACTIVE to FE)
"101": LSM_SYNC_TX_ACTIVE (TX READY
TO REPORT ACTIVE TO FE)
15:12
11:6
5:0
FE_GSM
Far-end GSM states. This is copied from the
group state field in the incoming ICP cells
NUM_TX_LINKS_ACTIVE Total number of tx links that are currently in an
active state.
NUM_RX_LINKS_ACTIV
Total number of rx links that are currently in an
E
active state.
1
31
GROUP_TIMER_EN1
Group timer 1 enable. The enable bit is set
when the timer is loaded; it is cleared when
either a timeout occurs or the timer is disabled.
30:28
27:24
RESERVED
GROUP_TIMER1
Group-level timer 1. Implemented as 4-bit down
counter. The counter is loaded with the
appropriate timeout value when the timer is
enabled, and decrements on every timer tick,
until it reaches zero. A timeout event is declared
when a timer tick occurs and the counter equals
zero, if the timer is enabled.
23
GROUP_TIMER_EN2
Group timer 2 enable. The enable bit is set
when timer is loaded; it is cleared when either a
timeout occurs or the timer is disabled.
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2020889, Issue 2
165
PMC [ PMC-SIERRA, INC ]
