PM7340 S/UNI-IMA-8
PRELIMINARY
INVERSE MULTIPLEXING OVER ATM
DATA SHEET
PMC-2001723
ISSUE 3
INVERSE MULTIPLEXING OVER ATM
Figure 8
- 8-bit Receive Cell Transfer Format
Bits 7-0
Byte 0
Address Prepend
(Any-PHY
and single
channel
UL2 only)
Byte 1
Optional Prepend[15:8]
Optional Prepend[7:0]
(Optional)
Byte 2
(Optional)
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7*
H1
H2
H3
H4
HEC
Byte 8
PAYLOAD1
•
•
•
Byte 55
PAYLOAD48
Note: HEC field may contain the address prepend for Single Channel UL2
For Any-PHY mode or single-PHY mode, the address prepend field encoding
indicates the virtual PHY ID. The virtual PHY ID contains 2 sections, the lower 7
bits indicates the virtual PHY ID, while the upper bits indicate the device address.
For UTOPIA multi-PHY mode, the address prepend is not used.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
48
PMC [ PMC-SIERRA, INC ]
