39.6 GMAC Transmit Status Register


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
								HRESP
Access								R/W
Reset								0


Bit	7	6	5	4	3	2	1	0
			TXCOMP	TFC	TXGO	RLE	COL	UBR
Access			R/W	R/W	R	R/W	R/W	R/W
Reset			0	0	0	0	0	0

Bit 8 – HRESP System Bus Response

Set when the DMA block sees a system bus error. Writing a one clears this bit.

Bit 5 – TXCOMP Transmit Complete

Set when a frame has been transmitted. Writing a one clears this bit.

Bit 4 – TFC Transmit Frame Corruption Due to System Bus Error

Transmit frame corruption due to system bus error. Set if an error occurs while midway through reading transmit frame from the system bus, including system bus errors and buffers exhausted mid frame (if the buffers run out during transmission of a frame then transmission stops, FCS shall be bad and GTXER asserted).

Also set in DMA packet buffer mode if single frame is too large for configured packet buffer memory size.

Writing a one clears this bit.

Bit 3 – TXGO Transmit Go (Read only)

When high, transmit is active. When using the DMA interface, this bit represents the TXGO variable as specified in the transmit buffer description.

Bit 2 – RLE Retry Limit Exceeded

Writing a one clears this bit.

Bit 1 – COL Collision Occurred

Set by the assertion of collision. Writing a one clears this bit. When operating in 10/100 mode, this status indicates either a collision or a late collision.