S/UNI-IMA-4 Telecom Standard Product Data Sheet
Released
Transmit IMA Group Context Table (MEM_SELECT=0)
Purpose: Contains state information, statistics, and ICP cell information (delivered by the
RIPP) for each IMA Group.
Usage: IMA Groups only.
Maintained by: TIMA.
Record Size: 16 32-bit words.
MEM_ADDR = (Group Tag X 16) + Word Offset
Table 31 Transmit IMA Group Context Record
Word
0
Bits
31:7
6:0
Parameter
Description
Reserved.
Cell count from the last 2048 cell stuff on the Timing
Reference Link. Each count represents 32 cells and
is used in conjunction with the M value in the ICP cell
to determine when 2048 cells have been transferred.
TRL cell count
This field must be set to 0 by the PM before group
startup. Maintained by TIMA state machine.
1
31:16
Discarded Cells
Number of cells discarded from ATM layer when the
IMA group was in a non-operational state.
15:0
31:0
Reserved.
2
3
Number of Cell Per
Group
Continuously running cell count of all ATM cells read
from the associated group FIFO and sent to link
FIFOs.. Maintained by TIMA state machine.
31:0
Number of ATM Filler Continuously running cell count of ATM filler cells
Cells
(generated when there is no ATM cell to send)
delivered on all links in the group. Maintained by
TIMA state machine.
4
5
31:0
31:24
23:16
15:8
7:0
Reserved
Reserved
ICP octet 11
ICP octet 12
ICP octet 13
ICP cell octets that are maintained by RIPP and
placed into the outgoing ICP cells for all links in the
group.
6
7
31:0
ICP octet 14
ICP octet 15
ICP octet 16
ICP octet 17
ICP octet 18
ICP octet 19
ICP octet 20
ICP octet 21
31:0
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2020889, Issue 2
239
PMC [ PMC-SIERRA, INC ]
