SAM3A4C Atmel Corporation, SAM3A4C Datasheet - Page 1314
SAM3A4C
Manufacturer Part Number
SAM3A4C
Description
Manufacturer
Atmel Corporation
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41.6.26.11
Name:
Address:
Access:
• TUND: Transmit Underruns
An 8-bit register counting the number of frames not transmitted due to a transmit DMA underrun. If this register is incre-
mented, then no other statistics register is incremented.
41.6.26.12
Name:
Address:
Access:
• CSE: Carrier Sense Errors
An 8-bit register counting the number of frames transmitted where carrier sense was not seen during transmission or where
carrier 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.
1314
1314
31
23
15
31
23
15
–
–
–
7
–
–
–
7
SAM3X/A
SAM3X/A
Transmit Underrun Errors Register
Carrier Sense Errors Register
EMAC_TUND
0x400B0064
Read-write
EMAC_CSE
0x400B0068
Read-write
30
22
14
30
22
14
–
–
–
6
–
–
–
6
29
21
13
29
21
13
–
–
–
5
–
–
–
5
28
20
12
28
20
12
–
–
–
4
–
–
–
4
TUND
CSE
27
19
11
27
19
11
–
–
–
3
–
–
–
3
26
18
10
26
18
10
–
–
–
2
–
–
–
2
25
17
25
17
–
–
9
–
1
–
–
9
–
1
11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12
24
16
24
16
–
–
8
–
0
–
–
8
–
0
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