SPRUGZ8D Datasheet, PDF (1502/3016 Pages) Texas Instruments – Technical Reference Manual

Registers
9.4.1.5 CPSW Transmit Priority Type Register (CPSW_PTYPE) (0x010)
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Figure 9-25. CPSW Transmit Priority Type Register (CPSW_PTYPE)
31
Reserved
R-0
23
22
Reserved
R-0
21
P2_PRI3_
SHAPE_EN
R/W-0
20
P2_PRI2_
SHAPE_EN
R/W-0
19
P2_PRI1_
SHAPE_EN
R/W-0
18
P1_PRI3_
SHAPE_EN
R/W-0
17
P1_PRI2_
SHAPE_EN
R/W-0
15
11
10
9
Reserved
P2_PTYPE_
ESC
P1_PTYPE_
ESC
R-0
R/W-0
R/W-0
7
5
4
Reserved
R-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
ESC_PRI_LD_VAL
R/W-0
24
16
P1_PRI1_
SHAPE_EN
R/W-0
8
P0_PTYPE_
ESC
R/W-0
0
Table 9-32. CPSW Transmit Priority Type Register (CPSW_PTYPE) Field Descriptions
Bit
31-22
21
Field
Reserved
P2_PRI3_SHAPE_EN
20 P2_PRI2_SHAPE_EN
19 P2_PRI1_SHAPE_EN
18 P1_PRI3_SHAPE_EN
17 P1_PRI2_SHAPE_EN
16 P1_PRI1_SHAPE_EN
15-11 Reserved
10 P2_PTYPE_ESC
9
P1_PTYPE_ESC
8
P0_PTYPE_ESC
7-5 Reserved
4-0 ESC_PRI_LD_VAL
Value
0
0-1
0-1
0-1
0-1
0-1
0-1
0
0
1
0
1
0
1
0
0-1Fh
Description
Read as zero.
Port 2 Queue Priority 3 Transmit Shape Enable
If there is only one shaping queue then it must be priority 3.
Port 2 Queue Priority 2 Transmit Shape Enable
If there are two shaping queues then they must be priorities 3 and 2.
Port 2 Queue Priority 1 Transmit Shape Enable
If there are three shaping queues all three bits should be set.
Port 1 Queue Priority 3 Transmit Shape Enable
If there is only one shaping queue then it must be priority 3.
Port 1 Queue Priority 2 Transmit Shape Enable
If there are two shaping queues then they must be priorities 3 and 2.
Port 1 Queue Priority 1 Transmit Shape Enable
If there are three shaping queues all three bits should be set.
Read as zero.
Port 2 Priority Type Escalate
Port 2 priority type fixed
Port 2 priority type escalate. Escalate should not be used with queue shaping.
Port 1 Priority Type Escalate
Port 1 priority type fixed
Port 1 priority type escalate. Escalate should not be used with queue shaping.
Port 0 Priority Type Escalate
Port 0 priority type fixed
Port 0 priority type escalate. Escalate should not be used with queue shaping.
Read as zero.
Escalate Priority Load Value When a port is in escalate priority, this is the number of
higher priority packets sent before the next lower priority is allowed to send a packet.
Escalate priority allows lower priority packets to be sent at a fixed rate relative to the
next higher priority.
1502
3PSW Ethernet Subsystem (EMAC)
SPRUGZ8D – 14 November 2011 – Revised April 2013
Copyright © 2011–2013, Texas Instruments Incorporated
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