PM7340 S/UNI-IMA-8
PRELIMINARY
INVERSE MULTIPLEXING OVER ATM
DATA SHEET
PMC-2001723
ISSUE 3
INVERSE MULTIPLEXING OVER ATM
• RIPP RX Link Configuration Record: maps physical Link to Group Tag,
enables RX link interrupts
• TIMA TX Physical Link Context Record: sets ICP offset.
• RDAT Link Context Record: maps physical link to group.
12.4.3.1
Configuring a Group for IMA
IMA groups within the S/UNI-IMA-8 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 a reporting purposes within the S/UNI-IMA-8. 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:
RIPP Group Configuration Record: Initial group options and configuration, After
the group is started, the following configuration options may only be changed
with a RIPP command or in conjunction with a group restart.
• Received OAM Label
• Group Symmetry
• IMA 1.1 versus IMA 1.0
• IMA ID
• M
• Reported Clk Mode (ITC/CTC)
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 the change other fields.
• Minimum # of Links
• Differential delay tolerance and options
• per group Interrupt enables
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
265
PMC [ PMC-SIERRA, INC ]
