
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
245
Word
Bits
Parameter
Description
2
31:0
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.
3
31:0
Number of ATM
Filler Cells
Continuously running cell count of ATM
filler cells (generated when there is no ATM
cell to send) delivered on all links in the
group. Maintained by TIMA state machine.
4
31:0
Reserved
31:24
Unused
Configuration bit maintained by RIPP to
denote the current GTSM state for the
associated group. When set to 1 the group
is considered active. When set to 0 the
group is inactive and all enabled links will
have filler cells sent on them regardless of
whether they are active or inactive.
23:16
ICP octet 11
15:8
ICP octet 12
5
7:0
ICP octet 13
6
31:0
ICP octet 14
ICP octet 15
ICP octet 16
ICP octet 17
7
31:0
ICP octet 18
ICP octet 19
ICP octet 20
ICP octet 21
8
31:0
ICP octet 22
ICP octet 23
ICP octet 24
ICP octet 25
ICP cell octets that are maintained by RIPP
and placed into the outgoing ICP cells for
all links in the group.