RELEASED
PM7380 FREEDM-32P672
DATA SHEET
PMC-1990262
ISSUE 5
FRAME ENGINE AND DATA LINK MANAGER 32P672
TDTB[31:0]:
The transmit descriptor table base bits (TDTB[31:0]) provides the base
address of the Transmit Descriptor Table in PCI host memory. This register is
initialised by the host. To calculate the physical address of a TD, the 15 bit TD
offset must be added to bits 31 to 4 of the Transmit Descriptor Table Base
(TDTB[31:4]).
The table must be on a 16 byte boundary and thus the least significant four
bits must be written to logic zero.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA,INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
190
PMC [ PMC-SIERRA, INC ]
