S/UNI-IMA-4 Telecom Standard Product Data Sheet
Released
Receive ICP Cell Buffer (MEM_SELECT=8)
Purpose: Contains the most recently received non-errored ICP cell (valid or invalid) for each
Physical Link. The RDAT will initialize this buffer with the first cell received during link
addition. This record is provided for read access only.
Usage: IMA Groups only.
Maintained by: RDAT
Record Size: 16 32-bit words.
MEM_ADDR = (Physical Link Number X 16) + Word Offset
Table 27 Receive ICP Cell Buffer Structure
Word Bits
Parameter
icp_data
Description
Octets 6-53 of the payload contained in the last non-errored ICP
cell for this link.
31:24
23:16
15:8
7:0
0
1
Octet 6
Octet 10
Octet 7
Octet 11
Octet 8
Octet 12
Octet 9
Octet 13
2
Octet 14
Octet 18
Octet 22
Octet 26
Octet 30
Octet 34
Octet 38
Octet 42
Octet 46
Octet 50
Reserved.
Octet 15
Octet 19
Octet 23
Octet 27
Octet 31
Octet 35
Octet 39
Octet 43
Octet 47
Octet 51
Octet 16
Octet 20
Octet 24
Octet 28
Octet 32
Octet 36
Octet 40
Octet 44
Octet 48
Octet 52
Octet 17
Octet 21
Octet 25
Octet 29
Octet 33
Octet 37
Octet 41
Octet 45
Octet 49
Octet 53
3
4
5
6
7
8
9
10
11
12
31:10
9
position_error
header_invalid
The current ICP cell was received in an unexpected position
within the IMA frame. If the contents of the cell are valid, then
the ICP cell is considered valid, but the IFSM will transition to
the IMA Hunt state.
The ATM cell header is not a correct ICP cell header. This bit
should only be set when no ICP cells have been received on this
link.
8
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2020889, Issue 2
224
PMC [ PMC-SIERRA, INC ]
