SPRUGZ8D Datasheet, PDF (1266/3016 Pages) Texas Instruments – Technical Reference Manual

DDR2/DDR3 Configuration Registers
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7.8.1.27 Priority to Class of Service Mapping Register (PRI_COS_MAP)
The Priority to Class of Service Mapping Register(PRI_COS_MAP) is shown in the figure and table below.
Figure 7-31. Priority to Class of Service Mapping Register (PRI_COS_MAP)
31
30
16
PRI_COS_MAP_EN
Reserved
R/W-0
R-0
15
14
13
12
11
10
9
8
PRI_7_COS PRI_6_COS PRI_5_COS PRI_4_COS
R/W-0
R/W-0
R/W-0
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
7
6
PRI_3_COS
R/W-0
5
4
PRI_2_COS
R/W-0
3
2
PRI_1_COS
R/W-0
1
0
PRI_0_COS
R/W-0
Table 7-62. Priority to Class of Service Mapping Register (PRI_COS_MAP) Field Descriptions
Bit Field
31 PRI_COS_MAP_
EN
30-16 Reserved
15-14 PRI_7_COS
13-12 PRI_6_COS
11-10 PRI_5_COS
9-8 PRI_4_COS
7-6 PRI_3_COS
5-4 PRI_2_COS
3-2 PRI_1_COS
1-0 PRI_0_COS
Value Description
0
1
0 or 3
1 or 2
0 or 3
1 or 2
0 or 3
1 or 2
0 or 3
1 or 2
0 or 3
1 or 2
0 or 3
1 or 2
0 or 3
1 or 2
0 or 3
1 or 2
Disable mapping
Enable priority to class of service mapping
Reserved
Class of service for commands with priority of 7.
Setting a value of 0 or 3 will not assign any class of service.
Commands with priority 7 is mapped to class of service 1 or 2
Class of service for commands with priority of 6.
Setting a value of 0 or 3 will not assign any class of service.
Commands with priority 6 is mapped to class of service 1 or 2
Class of service for commands with priority of 5.
Setting a value of 0 or 3 will not assign any class of service.
Commands with priority 5 is mapped to class of service 1 or 2
Class of service for commands with priority of 4.
Setting a value of 0 or 3 will not assign any class of service.
Commands with priority 4 is mapped to class of service 1 or 2
Class of service for commands with priority of 3.
Setting a value of 0 or 3 will not assign any class of service.
Commands with priority 3 is mapped to class of service 1 or 2
Class of service for commands with priority of 2.
Setting a value of 0 or 3 will not assign any class of service.
Commands with priority 2 is mapped to class of service 1 or 2
Class of service for commands with priority of 1.
Setting a value of 0 or 3 will not assign any class of service.
Commands with priority 1 is mapped to class of service 1 or 2
Class of service for commands with priority of 0.
Setting a value of 0 or 3 will not assign any class of service.
Commands with priority 0 is mapped to class of service 1 or 2
1266
DDR2 and DDR3 Memory Controller
SPRUGZ8D – 14 November 2011 – Revised April 2013
Copyright © 2011–2013, Texas Instruments Incorporated
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