Atmel Evaluation Kit AT91SAM9X25-EK AT91SAM9X25-EK Hoja De Datos
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AT91SAM9X25-EK
1041
SAM9X25 [DATASHEET]
11054E–ATARM–10-Mar-2014
45.6.2 Network Configuration Register
Name:
EMAC_NCFGR
Address:
0xF802C004
Access:
Read-write
• SPD: Speed
Set to 1 to indicate 100 Mbit/s operation, 0 for 10 Mbit/s. The value of this pin is reflected on the speed pin.
• FD: Full Duplex
If set to 1, the transmit block ignores the state of collision and carrier sense and allows receive while transmitting. Also controls
the half_duplex pin.
the half_duplex pin.
• 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.
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.
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.
1518 bytes.
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
IRXFCS
EFRHD
DRFCS
RLCE
15
14
13
12
11
10
9
8
RBOF
PAE
RTY
CLK
–
BIG
7
6
5
4
3
2
1
0
UNI
MTI
NBC
CAF
JFRAME
–
FD
SPD