at91sam9g20-cu ATMEL Corporation, at91sam9g20-cu Datasheet - Page 640

• Manufacturer Part Number: at91sam9g20-cu
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

36.5.2
Register Name:
Access Type:
• 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.
• 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.
• CLK: MDC clock divider
640
UNI
31
23
15
–
–
7
AT91SAM9G20 Preliminary
Network Configuration Register
RBOF
MTI
30
22
14
EMAC_NCFG
Read-write
–
–
6
NBC
PAE
29
21
13
–
–
5
RTY
CAF
28
20
12
–
–
4
JFRAME
IRXFCS
27
19
11
–
3
CLK
EFRHD
26
18
10
–
2
–
DRFCS
FD
25
17
–
9
–
1
6384B–ATARM–15-Dec-08
RLCE
SPD
BIG
24
16
–
8
0