Datasheet

1035
SAM9G25 [DATASHEET]
11032C–ATARM–25-Jan-13
45.6.26.11 Transmit Underrun Errors Register
Name: EMAC_TUND
Address: 0xF802C064
Access: Read-write
• 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.
45.6.26.12 Carrier Sense Errors Register
Name: EMAC_CSE
Address: 0xF802C068
Access: Read-write
• 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.
31 30 29 28 27 26 25 24
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23 22 21 20 19 18 17 16
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15 14 13 12 11 10 9 8
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76543210
TUND
31 30 29 28 27 26 25 24
––––––––
23 22 21 20 19 18 17 16
––––––––
15 14 13 12 11 10 9 8
––––––––
76543210
CSE