at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 818
at91sam9263
Manufacturer Part Number
at91sam9263
Description
At91 Arm Thumb Microcontrollers
Manufacturer
ATMEL Corporation
Datasheet
1.AT91SAM9263.pdf
(1065 pages)
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40.5.26.11
Register Name:
Access Type:
• 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.
40.5.26.12
Register Name:
Access Type:
• 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.
818
31
23
15
31
23
15
–
–
–
7
–
–
–
7
AT91SAM9263 Preliminary
Transmit Underrun Errors Register
Carrier Sense Errors Register
30
22
14
30
22
14
EMAC_TUND
Read/Write
–
–
–
6
EMAC_CSE
Read/Write
–
–
–
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
6249D–ATARM–20-Dec-07
24
16
24
16
–
–
8
–
0
–
–
8
–
0
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