S/UNI-IMA-4 Telecom Standard Product Data Sheet
Released
WORD
BIT
DATA FIELD
DESCRIPTION
22:20
RESERVED
19:16
GROUP_TIMER2
Group-level timer 2. 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
to zero, if the timer is enabled.
15
GROUP_INT_ACTIVE
Indicates whether there is currently an interrupt
active from the group (including all the links).
This bit is set to ‘1’ by RIPP upon generating an
interrupt and cleared upon PM issuing a
read_event command. No new interrupt will be
generated once this bit is set.
This field will remain at its current value during
a group-restart.
14
GROUP_INHIBIT_STATU Group inhibiting status.
S
‘0’: Group is not inhibited.
‘1’: Group is inhibited.
This field can be programmed by PM during
group record initialization, and can be modified
later using Inhibit_group Not_inhibit_group
commands. Note it is possible to inhibit the
group before actually issuing the add_group
command.
This field will remain at its current value during
a group-restart.
13
12
RESERVED
FE_TRL_STATUS
When set, indicates that the TRL specified in
the last received ICP cell is a link that is “in-
group”. If the TRL received in the last ICP cell is
not “in-group”, this bit is cleared, and the TRL
remains with the last specified valid TRL.
During the period in which the specified TRL is
not “in-group”, the scheduling of the cells played
out to the ATM layer is not accurate and the
depth of the DCB buffers may drift and cause
DCB buffer overruns or underruns. If on group
startup, the TRL is not detected to be “in-
group”, the group will not start up.
11
GROUP_TIMING_ERRO
R
Group timing error. The FE IMA transmit clock
mode does not match the NE transmit clock
mode.
10
9
RESERVED
PM_ADJUST_DELY_INT
PM adjust_delay procedure done interrupt. The
adjust_delay procedure invoked by the PM
command has successfully finished or aborted.
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2020889, Issue 2
166
PMC [ PMC-SIERRA, INC ]
