22.8.8 Priority Control 0


Bit	31	30	29	28	27	26	25	24
	RRLVLEN3	QOS3[1:0]		LVLPRI3[4:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	1	0	0	0	0	0	0


Bit	23	22	21	20	19	18	17	16
	RRLVLEN2	QOS2[1:0]		LVLPRI2[4:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	1	0	0	0	0	0	0


Bit	15	14	13	12	11	10	9	8
	RRLVLEN1	QOS1[1:0]		LVLPRI1[4:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	1	0	0	0	0	0	0


Bit	7	6	5	4	3	2	1	0
	RRLVLEN0	QOS0[1:0]		LVLPRI0[4:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	1	0	0	0	0	0	0

Bits 7, 15, 23, 31 – RRLVLEN Level Round-Robin Scheduling Enable

For details on arbitration schemes, refer to Arbitration.

Value	Description
0	Static arbitration scheme for channels with level 0 priority.
1	Round-robin arbitration scheme for channels with level 0 priority.

Bits 5:6, 13:14, 21:22, 29:30 – QOS Level Quality of Service

Value	Description
0x0	Disable Background (no sensitive operation).
0x1	Low Sensitive to bandwidth.
0x2	Medium Sensitive to latency.
0x3	Critical Latency.

Bits 0:4, 8:12, 16:20, 24:28 – LVLPRI Level Channel Priority Number

When round-robin arbitration is enabled (PRICTRL0.RRLVLEN0=1) for priority level 0, this register holds the channel number of the last DMA channel being granted access as the active channel with priority level 0.

When static arbitration is enabled (PRICTRL0.RRLVLEN0=0) for priority level 0, and the value of this bit group is non-zero, it will not affect the static priority scheme.

This bit group is not reset when round-robin arbitration gets disabled (PRICTRL0.RRLVLEN0 written to '0').

Name:	PRICTRL0
Offset:	0x14
Reset:	0x40404040
Property:	PAC Write-Protection