Ethernet Subsystem Registers
14.5.8.5 PTYPE Register (offset = 10h) [reset = 0h]
PTYPE is shown in
and described in
TRANSMIT PRIORITY TYPE REGISTER
Figure 14-188. PTYPE Register
31
30
29
28
27
26
25
24
Reserved
23
22
21
20
19
18
17
16
Reserved
P2_PRI3_SHAPE_EN P2_PRI2_SHAPE_EN P2_PRI1_SHAPE_EN P1_PRI3_SHAPE_EN P1_PRI2_SHAPE_EN P1_PRI1_SHAPE_EN
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
15
14
13
12
11
10
9
8
Reserved
P2_PTYPE_ESC
P1_PTYPE_ESC
P0_PTYPE_ESC
R/W-0
R/W-0
R/W-0
7
6
5
4
3
2
1
0
Reserved
ESC_PRI_LD_VAL
R/W-0
LEGEND: R/W = Read/Write; R = Read only; W1toCl = Write 1 to clear bit; -n = value after reset
Table 14-205. PTYPE Register Field Descriptions
Bit
Field
Type
Reset
Description
21
P2_PRI3_SHAPE_EN
R/W-0
0
Port 2 Queue Priority 3 Transmit Shape Enable - If there is only one
shaping queue then it must be priority 3.
20
P2_PRI2_SHAPE_EN
R/W-0
0
Port 2 Queue Priority 2 Transmit Shape Enable - If there are two
shaping queues then they must be priorities 3 and 2.
19
P2_PRI1_SHAPE_EN
R/W-0
0
Port 2 Queue Priority 1 Transmit Shape Enable - If there are three
shaping queues all three bits should be set.
18
P1_PRI3_SHAPE_EN
R/W-0
0
Port 1 Queue Priority 3 Transmit Shape Enable - If there is only one
shaping queue then it must be priority 3.
17
P1_PRI2_SHAPE_EN
R/W-0
0
Port 1 Queue Priority 2 Transmit Shape Enable- If there are two
shaping queues then they must be priorities 3 and 2.
16
P1_PRI1_SHAPE_EN
R/W-0
0
Port 1 Queue Priority 1 Transmit Shape Enable- If there are three
shaping queues all three bits should be set.
10
P2_PTYPE_ESC
R/W-0
0
Port 2 Priority Type Escalate -
0 - Port 2 priority type fixed
1 - Port 2 priority type escalate Escalate should not be used with
queue shaping.
9
P1_PTYPE_ESC
R/W-0
0
Port 1 Priority Type Escalate -
0 - Port 1 priority type fixed
1 - Port 1 priority type escalate Escalate should not be used with
queue shaping.
8
P0_PTYPE_ESC
R/W-0
0
Port 0 Priority Type Escalate -
0 - Port 0 priority type fixed
1 - Port 0 priority type escalate Escalate should not be used with
queue shaping.
4-0
ESC_PRI_LD_VAL
R/W-0
0
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.
1429
SPRUH73H – October 2011 – Revised April 2013
Ethernet Subsystem
Copyright © 2011–2013, Texas Instruments Incorporated