RELEASED
PM7380 FREEDM-32P672
DATA SHEET
PMC-1990262
ISSUE 5
FRAME ENGINE AND DATA LINK MANAGER 32P672
TQB[31:0]:
The transmit queue base bits (TQB[31:0]) provides the base address of the
Transmit Descriptor Reference Free and Transmit Descriptor Reference
Ready queue in PCI host memory. This register is initialised by the host. To
calculate the physical address of a particular transmit queue element, the
TQB bits are added with the appropriate queue start, end, read or write index
registers to form the physical address.
The base address must be dword aligned and thus the least significant two
bits must be written to logic zero.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA,INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
193
PMC [ PMC-SIERRA, INC ]
