SAM7X256_14 Datasheet, PDF (551/662 Pages) ATMEL Corporation – ARM-based Flash MCU

37.5.2 Network Configuration Register
Register Name:
EMAC_NCFGR
Access Type:
Read-write
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
IRXFCS
EFRHD
DRFCS
RLCE
15
14
RBOF
13
12
PAE
RTY
11
10
CLK
9
8
BIG
7
6
5
4
3
2
UNI
MTI
NBC
CAF
JFRAME
–
1
0
FD
SPD
• SPD: Speed
Set to 1 to indicate 100 Mbit/s operation, 0 for 10 Mbit/s.
• FD: Full Duplex
If set to 1, the transmit block ignores the state of collision and carrier sense and allows receive while transmitting.
• CAF: Copy All Frames
When set to 1, all valid frames are received.
• JFRAME: Jumbo Frames
Set to one to enable jumbo frames of up to 10240 bytes to be accepted.
• NBC: No Broadcast
When set to 1, frames addressed to the broadcast address of all ones are not received.
• MTI: Multicast Hash Enable
When set, multicast frames are received when the 6-bit hash function of the destination address points to a bit that is set in the
hash register.
• UNI: Unicast Hash Enable
When set, unicast frames are received when the 6-bit hash function of the destination address points to a bit that is set in the hash
register.
• BIG: Receive 1536 bytes frames
Setting this bit means the EMAC receives frames up to 1536 bytes in length. Normally, the EMAC would reject any frame above
1518 bytes.
SAM7X Series [DATASHEET]
6120K–ATARM–11-Feb-14
551