KSZ8463ML Datasheet, PDF (121/259 Pages) Micrel Semiconductor – IEEE 1588 Precision Time Protocol-Enabled, Three-Port, 10/100-Managed Switch with MII or RMII

Micrel, Inc.
KSZ8463ML/RL/FML/FRL
TOS Priority Control Registers
TOS Priority Control Register 1 (0x016 – 0x017): TOSR1
The IPv4/IPv6 type-of-service (TOS) priority control registers are used to define a 2-bit priority to each of the 64 possible
values in the 6-bit differentiated services code point (DSCP) field in the IP header of ingress frames.
This register contains the TOS priority control bits for the switch function.
Bit
15 − 14
13 − 12
11 − 10
9−8
7−6
5−4
3−2
1−0
Default
00
00
00
00
00
00
00
00
R/W Description
DSCP[15:14]
RW _{The value in this field is used as the frame’s priority when bits [7:2] of the IP TOS/DiffServ/Traffic}
Class value are 0x1c.
DSCP[13:12]
R/W _{The value in this field is used as the frame’s priority when bits [7:2] of the IP TOS/DiffServ/Traffic}
Class value are 0x18.
DSCP[11:10]
R/W _{The value in this field is used as the frame’s priority when bits [7:2] of the IP TOS/DiffServ/Traffic}
Class value are 0x14.
DSCP[9:8]
R/W _{The value in this field is used as the frame’s priority when bits [7:2] of the IP TOS/DiffServ/Traffic}
Class value are 0x10.
DSCP[7:6]
R/W _{The value in this field is used as the frame’s priority when bits [7:2] of the IP TOS/DiffServ/Traffic}
Class value are 0x0c.
DSCP[5:4]
R/W _{The value in this field is used as the frame’s priority when bits [7:2] of the IP TOS/DiffServ/Traffic}
Class value are 0x08.
DSCP[3:2]
R/W _{The value in this field is used as the frame’s priority when bits [7:2] of the IP TOS/DiffServ/Traffic}
Class value are 0x04.
DSCP[1:0]
R/W _{The value in this field is used as the frame’s priority when bits [7:2] of the IP TOS/DiffServ/Traffic}
Class value are 0x00.
June 11, 2014
121
Revision 1.0