62.123 GMAC Transmit Buffer Queue Base Address Register Priority Queue x

These registers hold the start address of the transmit buffer queues (transmit buffers descriptor lists) for the additional queues and must be initialized to the address of valid descriptors, even if the priority queues are not used.

Name:	GMAC_TBQBAPQx
Offset:	0x0440 + (x-1)*0x04 [x=1..5]
Reset:	0x00000000
Property:	Read/Write


Bit	31	30	29	28	27	26	25	24
	TXBQBA[29:22]
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


Bit	23	22	21	20	19	18	17	16
	TXBQBA[21:14]
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


Bit	15	14	13	12	11	10	9	8
	TXBQBA[13:6]
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


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

Bits 31:2 – TXBQBA[29:0] Transmit Buffer Queue Base Address

Written with the address of the start of the transmit queue.

Bit 0 – TXBQDIS Transmit Buffer Queue Disable

Value	Description
0	No effect.
1	Disables the transmit queue. This can be used to reduce the number of active queues and must be changed only while transmit is disabled.