
10-Port 100/1000 Mbps Ethernet MAC — IXF1010
Preliminary Datasheet
101
Document #: 249839
Revision #: 001
Rev. Date: April 29, 2002
6.5.6
TX Block Register Overview
include the TX FIFO High and Low watermark.
Table 76. TX FIFO High Watermark Ports 0 to 9 (Addr: 0x600 - 0x609)
Name2
Description
Address
Type1
Default
TX FIFO High
Watermark Port 0
High watermark for TX FIFO port 0. The default
value is 1584 bytes. When the amount of data
stored in the FIFO exceeds this value, the TX
FIFO indicates “SATISFIED.” This implies
further up in the system that no more data must
be sent to this port.
0x600
R/W
0x00000630
TX FIFO High
Watermark Port 1
High watermark for TX FIFO port 1. The default
value is 1584 bytes. When the amount of data
stored in the FIFO exceeds this value, the TX
FIFO indicates “SATISFIED.” This implies
further up in the system that no more data must
be sent to this port.
0x601
R/W
0x00000630
TX FIFO High
Watermark Port 2
High watermark for TX FIFO port 2. The default
value is 1584 bytes. When the amount of data
stored in the FIFO exceeds this value, the TX
FIFO indicates “SATISFIED.” This implies
further up in the system that no more data must
be sent to this port.
0x602
R/W
0x00000630
TX FIFO High
Watermark Port 3
High watermark for TX FIFO port 3. The default
value is 1584 bytes. When the amount of data
stored in the FIFO exceeds this value, the TX
FIFO indicates “SATISFIED.” This implies
further up in the system that no more data must
be sent to this port.
0x603
R/W
0x00000630
TX FIFO High
Watermark Port 4
High watermark for TX FIFO port 4. The default
value is 1584 bytes. When the amount of data
stored in the FIFO exceeds this value, the TX
FIFO indicates “SATISFIED.” This implies
further up in the system that no more data must
be sent to this port.
0x604
R/W
0x00000630
TX FIFO High
Watermark Port 5
High watermark for TX FIFO port 5. The default
value is 1584 bytes. When the amount of data
stored in the FIFO exceeds this value, the TX
FIFO indicates “SATISFIED.” This implies
further up in the system that no more data must
be sent to this port.
0x605
R/W
0x00000630
TX FIFO High
Watermark Port 6
High watermark for TX FIFO port 6. The default
value is 1584 bytes. When the amount of data
stored in the FIFO exceeds this value, the TX
FIFO indicates “SATISFIED.” This implies
further up in the system that no more data must
be sent to this port.
0x606
R/W
0x00000630
1. RO = Read Only; RR = Clear on Read; W = Write; R/W = Read/Write
2. For all TX FIFO High Watermark Registers, the following bit definitions apply to all ports (0:9):
Bits 31:13 - Reserved and RO.
Bits 12:0 - Described above.