40.6.24 Transmit Underrun Errors Register

EMAC_TUND is an EMAC statistics register. It resets to zero on a read and sticks at all ones when it counts to its maximum value. It should be read frequently enough to prevent loss of data.

Name:	EMAC_TUND
Offset:	0x64
Reset:	0x00000000
Property:	Read/Write


Bit	31	30	29	28	27	26	25	24

Access
Reset


Bit	23	22	21	20	19	18	17	16

Access
Reset


Bit	15	14	13	12	11	10	9	8

Access
Reset


Bit	7	6	5	4	3	2	1	0
	TUND[7:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	0

Bits 7:0 – TUND[7:0] 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.