
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
230
Table RDAT Link Sequence Memory
Bits
Parameter
Description
9
msg_status
RDAT message FIFO status. This bit is set by the
RDAT when a message for this link is written to the
RDAT message FIFO. The bit is cleared when a
command for this link is written to the RDAT message
clear command register.
8
Reserved
7:0
Reserved
Receive ICP Cell Buffer
The ICP cell buffer contains the most recently received non-errored ICP cell for
each link. This buffer is provided for the RIPP, but is also read accessible from
the microprocessor. Each buffer is 32 bits wide by 16 words, and is addressed by
the physical link number.
MEM_ADDR = (Physical Link Number X 16) + Word Offset
Table 27
Receive ICP Cell Buffer Structure
Word Bits
Parameter
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
Octet 6
Octet 7
Octet 8
Octet 9
1
Octet 10
Octet 11
Octet 12
Octet 13
2
Octet 14
Octet 15
Octet 16
Octet 17
3
Octet 18
Octet 19
Octet 20
Octet 21
4
Octet 22
Octet 23
Octet 24
Octet 25
5
Octet 26
Octet 27
Octet 28
Octet 29
6
Octet 30
Octet 31
Octet 32
Octet 33
7
icp_data
Octet 34
Octet 35
Octet 36
Octet 37