
PRELIMINARY
INVERSE MULTIPLEXING OVER ATM
PM7340 S/UNI-IMA-8
DATA SHEET
PMC-2001723
ISSUE 3
INVERSE MULTIPLEXING OVER ATM
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
166
declared when a timer tick occurs and
the counter equals zero, if the timer is
enabled.
23
GROUP_TIMER_E
N2
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.
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_ACTI
VE
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 a 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_
STATUS
Group inhibiting status.
‘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