Datasheet

20.8.7 Quality of Service Control

Name: QOSCTRL

Offset: 0x0E

Reset: 0x2A

Property: PAC Write-Protection

Bit 7 6 5 4 3 2 1 0

DQOS[1:0] FQOS[1:0] WRBQOS[1:0]

Access

R/W R/W R/W R/W R/W R/W

Reset 1 0 1 0 1 0

Bits 5:4 – DQOS[1:0] Data Transfer Quality of Service

These bits define the memory priority access during the data transfer operation.

DQOS[1:0] Name Description

0x0 DISABLE Background (no sensitive operation)

0x1 LOW Sensitive Bandwidth

0x2 MEDIUM Sensitive Latency

0x3 HIGH Critical Latency

Bits 3:2 – FQOS[1:0] Fetch Quality of Service

These bits define the memory priority access during the fetch operation.

FQOS[1:0] Name Description

0x0 DISABLE Background (no sensitive operation)

0x1 LOW Sensitive Bandwidth

0x2 MEDIUM Sensitive Latency

0x3 HIGH Critical Latency

Bits 1:0 – WRBQOS[1:0] Write-Back Quality of Service

These bits define the memory priority access during the write-back operation.

WRBQOS[1:0] Name Description

0x0 DISABLE Background (no sensitive operation)

0x1 LOW Sensitive Bandwidth

0x2 MEDIUM Sensitive Latency

0x3 HIGH Critical Latency