Intel IXF1104 manual Datasheet, Low watermark for TX FIFO Port 0. The

IXF1104 4-Port Gigabit Ethernet Media Access Controller

Table 133. TX FIFO Low Watermark Register Ports 0 - 3 ($0x60A – 0x60D)

Name	Description	Address	Type1	Default
	Low watermark for TX FIFO Port 0. The
	default value of 0x0D0 represents 208 8-byte
	locations. This equates to 1664 bytes of data. A
TX FIFO Low	unit entry in this register equates to 8 bytes of
	data. When the amount of data stored in the TX	0x60A	R/W	0x000000D0
Watermark Port 0
	FIFO falls below the low watermark, flow control
	is automatically de-asserted on the SPI3
	interface to allow further data to be sent by the
	switch fabric to the IXF1104.
	Low watermark for TX FIFO Port 1. The
	default value of 0x0D0 represents 208 8-byte
	locations. This equates to 1664 bytes of data. A
TX FIFO Low	unit entry in this register equates to 8 bytes of	0x60B	R/W	0x000000D0
	data. When the amount of data stored in the TX
Watermark Port 1
	FIFO falls below the low watermark, flow control
	is automatically de-asserted on the SPI3
	interface to allow further data to be sent by the
	switch fabric to the IXF1104.
	Low watermark for TX FIFO Port 2. The
	default value of 0x0D0 represents 208 8-byte
	locations. This equates to 1664 bytes of data. A
TX FIFO Low	unit entry in this register equates to 8 bytes of
	data. When the amount of data stored in the TX	0x60C	R/W	0x000000D0
Watermark Port 2
	FIFO falls below the low watermark, flow control
	is automatically de-asserted on the SPI3
	interface to allow further data to be sent by the
	switch fabric to the IXF1104.
	Low watermark for TX FIFO Port 3. The
	default value of 0x0D0 represents 208 8-byte
	locations. This equates to 1664 bytes of data. A
TX FIFO Low	unit entry in this register equates to 8 bytes of	0x60D	R/W	0x000000D0
	data. When the amount of data stored in the TX
Watermark Port 3
	FIFO falls below the low watermark, flow control
	is automatically de-asserted on the SPI3
	interface to allow further data to be sent by the
	switch fabric to the IXF1104.

1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No clear; R/W/C = Read/Write, Clear on Write

Datasheet 203

Document Number: 278757

Revision Number: 007

Revision Date: March 25, 2004