KSZ8864RMNI MICREL [Micrel Semiconductor], KSZ8864RMNI Datasheet - Page 77

• Manufacturer Part Number: KSZ8864RMNI
• Description: Integrated 4-Port 10/100 Managed Switch with Two MACs MII or RMII Interfaces
• Manufacturer: MICREL [Micrel Semiconductor]

September 2011
Address
1
0
Register 177 (0xB1): Reserved
Register 193 (0xC1): Port 1 Control 9
Register 209 (0xD1): Port 2 Control 9
Register 225 (0xE1): Port 3 Control 9
Register 241 (0xF1): Port 4 Control 9
7 - 2
1
0
Register 178 (0xB2): Reserved
Register 194 (0xC2): Port 1 Control 10
Register 210 (0xD2): Port 2 Control 10
Register 226 (0xE2): Port 3 Control 10
Register 242 (0xF2): Port 4 Control 10
7
6 - 0
Name
Insert Source Port PVID for
Untagged Packet Destination
to Second Lowest Egress Port
Note: Enabled by the register
135 bit 2
Reserved
Reserved
4 Queue Split Enable
Enable Dropping Tag
Enable Port Transmit Queue 3
Ratio
Port Transmit Queue 3
Ratio[6:0]
Description
Register 192: insert source Port 1 PVID for
untagged frame at egress Port 2
Register 208: insert source Port 2 PVID for
untagged frame at egress Port 1
Register 224: insert source Port 3 PVID for
untagged frame at egress Port 1
Register 240: insert source Port 4 PVID for
untagged frame at egress Port 1
Reserved
This bit in combination with Register16/32/48/64/80
bit 0 will select the split of 1/2/4 queues:
{Register177 bit 1, Register16 bit 0}=
11, reserved.
10, the port output queue is split into four priority
queues or if map 802.1p to priority 0-3 mode.
01, the port output queue is split into two priority
queues or if map 802.1p to priority 0-3 mode.
00, single output queue on the port. There is no
priority differentiation even though packets are
classified into high and low priority
0 = disable tag drop
1 = enable tag drop
0, strict priority, will transmit all the packets from
this priority queue 3 before transmit lower priority
queue.
1, bit[6:0] reflect the packet number allow to
transmit from this priority queue 3 within a certain
time
Packet number for Transmit Queue 3 for highest
priority packets in four queues mode
77
Mode
R/W
R/W
R/W
R/W
R/W
RO
RO
M9999-092011-1.4
0000000
0001000
Default
0
0
0
0
1