KSZ8462HL Datasheet, PDF (182/279 Pages) Micrel Semiconductor – IEEE 1588 Precision Time Protocol-Enabled Two-Port 10/100Mb/s Ethernet Switch with 8 or 16 Bit Host Interface

Micrel, Inc.
KSZ8462HL/KSZ8462FHL
Port 3 TXQ Rate Control Register 1 (0x0D0 – 0x0D1): P3TXQRCR1
This register contains the q2 and q3 rate control bits for port 3.
Bit
15
14−8
7
6−0
Default Value
1
0x04
1
0x08
R/W Description
Port 3 Transmit Queue 2 (high) Ratio Control
0 = Strict priority. Port 3 will transmit all the packets from this priority queue 2 before transmit
RW lower priority queue.
1 = Bit[14:8] reflect the number of packets allow to transmit from this priority queue 2 within a
certain time.
Port 3 Transmit Queue 2 (high) Ratio
RW _{This ratio indicates the number of packet for high priority packet can transmit within a given}
period.
Port 3 Transmit Queue 3 (highest) Ratio Control
0 = Strict priority. Port 3 will transmit all the packets from this priority queue 3 before transmit
RW lower priority queue.
1 = Bit[6:0] reflect the number of packets allow to transmit from this priority queue 3 within a
certain time.
Port 3 Transmit Queue 3 (highest) Ratio
RW _{This ratio indicates the number of packet for highest priority packet can transmit within a given}
period.
Port 3 TXQ Rate Control Register 2 (0x0D2 – 0x0D3): P3TXQRCR2
This register contains the q0 and q1 rate control bits for port 3.
Bit
15
14−8
7
6−0
Default Value
1
0x01
1
0x02
R/W Description
Port 3 Transmit Queue 0 (lowest) Ratio Control
0 = Strict priority. Port 3 will transmit all the packets from this priority queue 0 after transmit
RW higher priority queue.
1 = Bit[14:8] reflect the number of packets allow to transmit from this priority queue 0 within a
certain time.
Port 3 Transmit Queue 0 (lowest) Ratio
RW _{This ratio indicates the number of packet for lowest priority packet can transmit within a given}
period.
Port 3 Transmit Queue 1 (low) Ratio Control
0 = Strict priority. Port 3 will transmit all the packets from this priority queue 1 before transmit
RW lower priority queue.
1 = Bit[6:0] reflect the number of packets allow to transmit from this priority queue 1 within a
certain time.
Port 3 Transmit Queue 1 (low) Ratio
RW _{This ratio indicates the number of packet for low priority packet can transmit within a given}
period.
0x0D4 – 0x0D5: Reserved
June 11, 2014
182
Revision 1.0