7-39
Register Descriptions
HiPrTxDescQueueBaseAddr Register
Type: R/W
Internal Registers Subgroup: Ethernet Functional Registers
Byte Address: 94h - 97h
LoPrTxDescQueueBaseAddr Register
Type: R/W
Internal Registers Subgroup: Ethernet Functional Registers
Byte Address: 98h - 9Bh
Table 7-47. HiPrTxDescQueueBaseAddress Register
Bit(s)
rw
Reset
Value
Description/Function
31:8
r/w
0
HighPriorityTxDescQueueBaseAddress[31:8]:
When written with
a nonzero value, this field indicates the starting address of the queue
in host memory. It is written by the software driver during device
initialization. The address must be aligned to a 256-byte boundary.
The producer and consumer indices are pointing to a doubleword
(8-byte address) in the queue.
7:0
r/w
0
HighPriorityTxDescQueueBaseAddress[7:0]:
Must be 0.
Table 7-48. LoPrTxDescQueueBaseAddress Register
Bit(s)
rw
Reset
Value
Description/Function
31:8
r/w
0
LowPriorityTxDescQueueBaseAddress[31:8]:
When written with a
nonzero value, this field indicates the starting address of the queue
in host memory. It is written by the software driver during device
initialization. The address must be aligned to a 256-byte boundary.
The producer and consumer indices are pointing to a doubleword
(8-byte address) in the queue.
7:0
r/w
0
LowPriorityTxDescQueueBaseAddress[31:8]:
Must be 0.
