Atmel Xplained Pro Evaluation Kit ATSAM4E-XPRO ATSAM4E-XPRO Data Sheet
Product codes
ATSAM4E-XPRO
SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
1222
43.7.2 Network Configuration Register
Name:
GMAC_NCFGR
Address:
0x40034004
Access: Read/Write
SPD: Speed
Set to logic one to indicate 100 Mbps operation, logic zero for 10 Mbps.
FD: Full Duplex
If set to logic one, the transmit block ignores the state of collision and carrier sense and allows receive while transmitting.
DNVLAN: Discard Non-VLAN FRAMES
When set only VLAN tagged frames will be passed to the address matching logic.
JFRAME: Jumbo Frame Size
Set to one to enable jumbo frames up to 10240 bytes to be accepted. The default length is 10240 bytes.
CAF: Copy All Frames
When set to logic one, all valid frames will be accepted.
NBC: No Broadcast
When set to logic one, frames addressed to the broadcast address of all ones will not be accepted.
MTIHEN: Multicast Hash Enable
When set, multicast frames will be accepted when the 6-bit hash function of the destination address points to a bit that is
set in the Hash Register.
set in the Hash Register.
UNIHEN: Unicast Hash Enable
When set, unicast frames will be accepted when the 6-bit hash function of the destination address points to a bit that is set
in the Hash Register.
in the Hash Register.
MAXFS: 1536 Maximum Frame Size
Setting this bit means the GMAC will accept frames up to 1536 bytes in length. Normally the GMAC would reject any frame
above 1518 bytes.
above 1518 bytes.
31
30
29
28
27
26
25
24
–
IRXER
RXBP
IPGSEN
–
IRXFCS
EFRHD
RXCOEN
23
22
21
20
19
18
17
16
DCPF
DBW
CLK
RFCS
LFERD
15
14
13
12
11
10
9
8
RXBUFO
PEN
RTY
–
–
–
MAXFS
7
6
5
4
3
2
1
0
UNIHEN
MTI HEN
NBC
CAF
JFRAME
DNVLAN
FD
SPD