62.133 GMAC Screening Type 1 Register x Priority Queue

Screening type 1 registers are used to allocate up to 6 priority queues to received frames based on certain IP or UDP fields of incoming frames.

Name:	GMAC_ST1RPQx
Offset:	0x0500 + x*0x04 [x=0..3]
Reset:	0x00000000
Property:	Read/Write


Bit	31	30	29	28	27	26	25	24
			UDPE	DSTCE	UDPM[15:12]
Access			R/W	R/W	R/W	R/W	R/W	R/W
Reset			0	0	0	0	0	0


Bit	23	22	21	20	19	18	17	16
	UDPM[11:4]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	0


Bit	15	14	13	12	11	10	9	8
	UDPM[3:0]				DSTCM[7:4]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	0


Bit	7	6	5	4	3	2	1	0
	DSTCM[3:0]					QNB[2:0]
Access	R/W	R/W	R/W	R/W		R/W	R/W	R/W
Reset	0	0	0	0		0	0	0

Bit 29 – UDPE UDP Port Match Enable

When UDP port match enable is set (bit 29), the UDP Destination Port of the received UDP frame is matched against bits 27:12.

Bit 28 – DSTCE Differentiated Services or Traffic Class Match Enable

When DS/TC match enable is set (bit 28), the DS (differentiated services) field of the received IPv4 header or TC field (traffic class) of IPv6 headers are matched against bits 11:4.

Bits 27:12 – UDPM[15:0] UDP Port Match

When UDP port match enable is set (bit 29), the UDP Destination Port of the received UDP frame is matched against bits 27:12.

Bits 11:4 – DSTCM[7:0] Differentiated Services or Traffic Class Match

When DS/TC match enable is set (bit 28), the DS (differentiated services) field of the received IPv4 header or TC field (traffic class) of IPv6 headers are matched against bits 11:4.

Bits 2:0 – QNB[2:0] Queue Number (0–5)

If a match is successful, then the queue value programmed in bits 2:0 is allocated to the frame.