Datasheet

38.8.109 GMAC Screening Type 2 Register x Priority Queue
Name: GMAC_ST2RPQx
Offset: 0x0540 + x*0x04 [x=0..7]
Reset: 0x00000000
Property: Read/Write
Screening type 2 registers are used to allocate up to 6 priority queues to received frames based on the VLAN priority
field of received Ethernet frames.
Bit 31 30 29 28 27 26 25 24
COMPCE COMPC[4:0] COMPBE
Access
Reset 0 0 0 0 0 0 0
Bit 23 22 21 20 19 18 17 16
COMPB[4:0] COMPAE COMPA[4:3]
Access
Reset 0 0 0 0 0 0 0 0
Bit 15 14 13 12 11 10 9 8
COMPA[2:0] ETHE I2ETH[2:0] VLANE
Access
Reset 0 0 0 0 0 0 0 0
Bit 7 6 5 4 3 2 1 0
VLANP[2:0] QNB[2:0]
Access
Reset 0 0 0 0 0 0
Bit 30 – COMPCE Compare C Enable
Value Description
0
Compare C is disabled.
1
Comparison via the register designated by index COMPC is enabled.
Bits 29:25 – COMPC[4:0] Index of Screening T
ype 2 Compare Word 0/Word 1 register x
COMPC is a pointer to the compare registers GMAC_ST2CW0x and GMAC_ST2CW1x. When COMPCE=1, the
compare is true if the data at the frame offset ANDed with the value MASKVAL is equal to the value of COMPVAL
ANDed with the value of MASKVAL.
Bit 24 – COMPBE Compare B Enable
Value Description
0
Compare B is disabled.
1
Comparison via the register designated by index COMPB is enabled.
Bits 23:19 – COMPB[4:0] Index of Screening T
ype 2 Compare Word 0/Word 1 register x
COMPB is a pointer to the compare registers GMAC_ST2CW0x and GMAC_ST2CW1x. When COMPBE=1, the
compare is true if the data at the frame offset ANDed with the value MASKVAL is equal to the value of COMPVAL
ANDed with the value of MASKVAL.
Bit 18 – COMPAE Compare A Enable
Value Description
0
Compare A is disabled.
1
Comparison via the register designated by index COMPA is enabled.
SAM E70/S70/V70/V71 Family
GMAC - Ethernet MAC
© 2019 Microchip T
echnology Inc.
Datasheet
DS60001527D-page 742