S/UNI-IMA-4 Telecom Standard Product Data Sheet
Released
IMA groups are configured using the following per group tables:
Sꢀ RIPP Group Configuration Record: Group options and configuration.
Sꢀ TIMA TX-LID-to-Physical-Link Mapping Table: maps Group Tag/LID to physical
Link.
Sꢀ TIMA TX Group Configuration Record: maps group to Any-PHY/UTOPIA port ID,
sets stuffing mode and OAM label.
Sꢀ RDAT IMA Group Context Record: maps group to Any-PHY/UTOPIA port ID.
and also the following per link tables:
Sꢀ RIPP TX Link Configuration Record: maps physical Link to Group Tag/LID, enables
TX Link Interrupts.
Sꢀ RIPP RX Link Configuration Record: maps physical Link to Group Tag, enables RX
link interrupts.
Sꢀ TIMA TX Physical Link Context Record: sets ICP offset.
Sꢀ RDAT Link Context Record: maps physical link to group.
Configuring a Group for IMA
IMA groups within the S/UNI-IMA-4 are identified by a “group tag”. The group tag is an
identifier with values from 0 to 3 that uniquely identifies the group for programming and
reporting purposes within the S/UNI-IMA-4. The group tag is completely independent of the
Group ID located within the ICP cells.
Once a group tag is chosen for a group, the following records need to be programmed for the
group:
Sꢀ RIPP Group Configuration Record: Initial group options and configuration. After the
group is started, the following configuration options may be changed only with a RIPP
command or in conjunction with a group restart.
o
o
o
o
o
o
Expected OAM Label.
Group Symmetry.
IMA 1.1 versus IMA 1.0.
IMA ID.
M.
Expected Clk Mode (ITC/CTC).
Sꢀ The following entries within the RIPP Group Configuration Record may be changed
without a group restart of RIPP command. When changing these fields, care must be
taken not to change other fields.
o
o
o
o
Minimum # of Links.
Differential delay tolerance and options.
per group Interrupt enables.
Rx Physical links that are in the group.
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2020889, Issue 2
275
PMC [ PMC-SIERRA, INC ]
