Datasheet

458
AT32UC3A
29.7.2 Network Configuration Register
Register Name: NCFGR
Access Type: 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 con-
trols the half_duplex pin.
• Bit rate:
If set to 1 to configure the interface for serial operation. Must be set before receive and transmit enable in the network con-
trol register. If set a serial interface is configured with transmit and receive data being driven out on txd[0] and received on
rxd[0] serially. Also the crs and rx_dv are logically ORed together so either may be used as the data valid signal.
• 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 MACB receives frames up to 1536 bytes in length. Normally, the MACB would reject any frame
above 1518 bytes.
• EAE: External address match enable
When set, the eam pin can be used to copy frames to memory.
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 EAE BIG
7 6 5 4 3 2 1 0
UNI MTI NBC CAF JFRAME Bit rate FD SPD
32058K
AVR32-01/12