Atmel Evaluation Kit AT91SAM9G25-EK AT91SAM9G25-EK Data Sheet
Product codes
AT91SAM9G25-EK
1016
SAM9G25 [DATASHEET]
11032C–ATARM–25-Jan-13
45.6.8 Interrupt Status Register
Name:
EMAC_ISR
Address:
0xF802C024
Access:
Read-write
• MFD: Management Frame Done
The PHY maintenance register has completed its operation. Cleared on read.
• RCOMP: Receive Complete
A frame has been stored in memory. Cleared on read.
• RXUBR: Receive Used Bit Read
Set when a receive buffer descriptor is read with its used bit set. Cleared on read.
• TXUBR: Transmit Used Bit Read
Set when a transmit buffer descriptor is read with its used bit set. Cleared on read.
• TUND: Ethernet Transmit Buffer Underrun
The transmit DMA did not fetch frame data in time for it to be transmitted or
hresp
returned not OK. Also set if a used bit is read
mid-frame or when a new transmit queue pointer is written. Cleared on read.
• RLEX: Retry Limit Exceeded
Cleared on read.
• TXERR: Transmit Error
Transmit buffers exhausted in mid-frame - transmit error. Cleared on read.
• TCOMP: Transmit Complete
Set when a frame has been transmitted. Cleared on read.
• ROVR: Receive Overrun
Set when the receive overrun status bit gets set. Cleared on read.
• HRESP: HRESP not OK
Set when the DMA block sees
a bus error
. Cleared on read.
• PFRE: Pause Frame Received
Indicates a valid pause has been received. Cleared on a read.
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
–
–
PTZ
PFRE
HRESP
ROVR
–
–
7
6
5
4
3
2
1
0
TCOMP
TXERR
RLEX
TUND
TXUBR
RXUBR
RCOMP
MFD