S/UNI-IMA-4 Telecom Standard Product Data Sheet
Released
RA_16_BIT_MODE
When set, the Any-PHY/UTOPIA receive side interface operates in 16-bit mode.
0) 8-bit mode.
1) 16-bit mode.
RA_PREPEND
When set, two bytes are prepended to cells on the Any-PHY/UTOPIA bus. This prepend is
always zero. This prepend is independent of the address prepend used for Any-PHY mode.
0) No additional bytes are prepended to the cells.
1) Two additional bytes are prepended to the cells.
RA_HECUDF
This bit is only valid in Single Address UTOPIA Mode.
0) Place the virtual PHY ID in a prepend.
1) Place the virtual PHY ID in the HECUDF.
RA_DEVID[4:0]
This field provides the device ID that is used for polling and selection in the Any-PHY
mode or in the Single Address UTOPIA Mode. When the address presented on the Any-
PHY/UTOPIA RADR Interface pins matches this address, the S/UNI-IMA-4 will respond
to polls. The S/UNI-IMA-4 is selected for a cell transfer when the address on RADR at the
last cycle that RENB is high matches RA_DEVID.
RA_ENABLE
Enables the Receive Any-PHY/UTOPIA interface. Prior to this bit being set, all outputs are
tristated and all inputs are ignored on the Interface.
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2020889, Issue 2
113
PMC [ PMC-SIERRA, INC ]
