SAM7X128_14 Datasheet, PDF (576/662 Pages) ATMEL Corporation – ARM-based Flash MCU

37.5.26.11Transmit Underrun Errors Register
Register Name:
EMAC_TUND
Access Type:
Read-write
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
–
–
–
–
–
–
–
–
7
6
5
4
3
2
1
0
TUND
• TUND: Transmit Underruns
An 8-bit register counting the number of frames not transmitted due to a transmit DMA underrun. If this register is incremented,
then no other statistics register is incremented.
37.5.26.12Carrier Sense Errors Register
Register Name:
EMAC_CSE
Access Type:
Read-write
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
–
–
–
–
–
–
–
–
7
6
5
4
3
2
1
0
CSE
• CSE: Carrier Sense Errors
An 8-bit register counting the number of frames transmitted where carrier sense was not seen during transmission or where car-
rier sense was deasserted after being asserted in a transmit frame without collision (no underrun). Only incremented in half-
duplex mode. The only effect of a carrier sense error is to increment this register. The behavior of the other statistics registers is
unaffected by the detection of a carrier sense error.
SAM7X Series [DATASHEET]
6120K–ATARM–11-Feb-14
576