PM7340 S/UNI-IMA-8
PRELIMINARY
INVERSE MULTIPLEXING OVER ATM
DATA SHEET
PMC-2001723
ISSUE 3
INVERSE MULTIPLEXING OVER ATM
MEM_ADDR = TC Tag
Table 29
RDAT TC Context Record
Parameter Description
Bits
31:16
vphy_id
Virtual PHY ID. For UTOPIA mode, this identifies which
channel in the RXAPS FIFO cells received for this
group will be written to. For Any-PHY mode, this
identifies the least significant bits of the address which
will be prepended to all cells as they are written to the
single channel RXAPS FIFO.
15:0
read_ptr
Current read pointer for the delay compensation buffers
associated with this TC connection.
Receive ATM Congestion Count Register
The receive ATM congestion count is incremented by the RDAT each time a cell
is dropped due to ATM congestion. This is a global count.
MEM_ADDR is not used for accesses to this register.
Table 30
Receive ATM Congestion Count Register
Bits
Parameter
Description
31:0
cong_count
Count of the total number of cells dropped due to ATM
congestion.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
233
PMC [ PMC-SIERRA, INC ]
