Intel IXF1104 manual Datasheet

IXF1104 4-Port Gigabit Ethernet Media Access Controller

Table 93. MAC RX Statistics ($ Port_Index + 0x20 – + 0x39) (Sheet 2 of 4)

Name	Description	Address	Type1	Default
	The total number of packets received (including
RxPkts65to127	bad packets) that were 65-127 octets in length.	Port_Index	R	0x00000000
Octets	Incremented for tagged packets with a length of	+ 0x26
	65-127 bytes, including tag field.
	The total number of packets received (including
RxPkts128t0255	bad packets) that were 128-255 octets in length.	Port_Index	R	0x00000000
Octets	Incremented for tagged packets with a length of	+ 0x27
	128-255 bytes, including tag field.
	The total number of packets received (including
RxPkts256to511	bad packets) that were 256-511 octets in length.	Port_Index	R	0x00000000
Octets	Incremented for tagged packets with a length of	+ 0x28
	256-511 bytes, including tag field.
	The total number of packets received (including
RxPkts512to1023O	bad packets) that were 512-1023 octets in	Port_Index	R	0x00000000
ctets	length. Incremented for tagged packets with a	+ 0x29
	length of 512-1023 bytes, including tag field.
	The total number of packets received (including
RxPkts1024to1518	bad packets) that were 1024-1518 octets in	Port_Index	R	0x00000000
Octets	length. Incremented for tagged packet with a	+ 0x2A
	length between 1024-1522, including the tag.
	The total number of packets received (including
RxPkts1519toMaxO	bad packets) that were greater than 1518 octets	Port_Index
	in length. Incremented for tagged packet with a		R	0x00000000
ctets	length between 1523-max frame size, including	+ 0x2B
	the tag.
	Number of frames received with legal size, but
	with wrong CRC field (also called Frame Check
	Sequence (FCS) field).	Port_Index
RxFCSErrors	NOTE: Legal size is 64 bytes through the value		R	0x00000000
		+ 0x2C
	programmed in the “Max Frame Size
	(Addr: Port_Index + 0x0F)” on
	page 165.
RxTagged	Number of OK frames with VLAN tag.	Port_Index	R	0x00000000
	(Type field = 0x8100)	+ 0x2D
RxDataError3	Number of frames received with legal length,	Port_Index
	containing a code violation (signaled with		R	0x00000000
		+ 0x2E
	RX_ERR on RGMII).

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

2. When sending in large frames, the counters can only handle certain limits. The behavior of the LongErrors and VeryLongErrors counters is as follows: VeryLongErrors counts frames that are 2*maxframesize, dependent upon where maxframesize is set. If maxframesize sets greater than half of the available count in RxOctetsBad (2^14-1), VeryLongErrors is never incremented, but LongErrors is incremented. This is due to a limitation in the counter size, which means that an accurate count will not occur in the RxOctetsBAD counter if the frame is larger than 2^14-1.

3. This register is relevant only when configured for copper operation.

4. This register is relevant only when configured for fiber operation (line side interface is SerDes).

174 Datasheet

Document Number: 278757

Revision Number: 007

Revision Date: March 25, 2004