Intel IXF1104 manual Datasheet, Register Description: TX FIFO Underflow Event

IXF1104 4-Port Gigabit Ethernet Media Access Controller

Table 135. TX FIFO Overflow/Underflow/Out of Sequence Event ($0x61E) (Sheet 1 of 2)

Bit	Name	Description	Type1	Default
Register Description: TX FIFO Out of Sequence Event:
These register bits provide status information, and indicate if out-of-sequence data has been				0x0
received. The bit position equals the port number + 8. These bits are cleared on Read.
Register Description: TX FIFO Underflow Event:
This register provides a status that a FIFO Empty situation has occurred (for example, a FIFO				0x0
under-run). The bit position equals the port number + 4. This register is cleared on Read.
Register Description: TX FIFO Overflow Event:
This register provides a status that a FIFO full situation has occurred (for example, a FIFO				0x0
overflow). The bit position equals the port number. This register is cleared on Read.
31:12	Reserved	Reserved	RO	0x00000
		Port 3
11	FOSE3	0 = FIFO out of sequence event did not occur	R	0
		1 = FIFO out of sequence event occurred
		Port 2
10	FOSE2	0 = FIFO out of sequence event did not occur	R	0
		1 = FIFO out of sequence event occurred
		Port 1
9	FOSE1	0 = FIFO out of sequence event did not occur	R	0
		1 = FIFO out of sequence event occurred
		Port 0
8	FOSE0	0 = FIFO out of sequence event did not occur	R	0
		1 = FIFO out of sequence event occurred
		Port 3
7	FUE3	0 = FIFO underflow event did not occur	R	0
		1 = FIFO underflow event occurred
		Port 2
6	FUE2	0 = FIFO underflow event did not occur	R	0
		1 = FIFO underflow event occurred
		Port 1
5	FUE1	0 = FIFO underflow event did not occur	R	0
		1 = FIFO underflow event occurred
		Port 0
4	FUE0	0 = FIFO underflow event did not occur	R	0
		1 = FIFO underflow event occurred
		Port 3
3	FOE3	0 = FIFO overflow event did not occur	R	0
		1 = FIFO overflow event occurred

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 205

Document Number: 278757

Revision Number: 007

Revision Date: March 25, 2004