2. Serial RapidIO Interface > Lookup Tables
40
Tsi576 User Manual
June 6, 2016
Integrated Device Technology
www.idt.com
2.3.2
LUT Modes
The LUT mode, flat or hierarchical, is selected on a per-port basis through the LUT_512 field value in
the
“RapidIO Port x Mode CSR” on page 312
.
2.3.3
Flat Mode
A flat mode LUT is a table that maps destination IDs 0 to 511 to user selectable egress ports.
Destination IDs that fall outside this range are sent to the egress port identified in the RIO Route LUT
Attributes CSR (see
“RapidIO Route LUT Attributes (Default Port) CSR”
shows the configuration of the Local and Global Lookup tables (LUT) in Flat mode.
Flat mode is the default mode of operation of the LUT.