Datasheet

Bits 17:13 – COMPA[4:0] Index of Screening T
ype 2 Compare Word 0/Word 1 register x
COMPA is a pointer to the compare registers GMAC_ST2CW0x and GMAC_ST2CW1x. When COMPAE=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 12 – ETHE EtherType Enable
Value Description
0
EtherType match is disabled
1
EtherType match with bits [15:0] of the register designated by the value in I2ETH is enabled
Bits 11:9 – I2ETH[2:0] Index of Screening T
ype 2 EtherType register x
When EtherType is enabled (ETHE=1), the EtherType field (last EtherType in the header if the frame is VLAN-
tagged) is compared with bits [15:0] in the register designated by the value of this bit field.
Bit 8 – VLANE VLAN Enable
Value Description
0
VLAN match disabled
1
VLAN match is enabled
Bits 6:4 – VLANP[2:0] VLAN Priority
When VLAN match is enabled (VLANE=1), the VLAN Priority field of the received frame is matched against the value
of this bit field.
Bits 2:0 – QNB[2:0]
Queue Number
If a match is successful, then the queue value programmed in QNB is allocated to the frame.
SAM E70/S70/V70/V71 Family
GMAC - Ethernet MAC
© 2019 Microchip T
echnology Inc.
Datasheet
DS60001527D-page 743