KSZ8895 INFINEON [Infineon Technologies AG], KSZ8895 Datasheet - Page 82

• Manufacturer Part Number: KSZ8895
• Description: Integrated 5-Port 10/100 Managed Ethernet Switch with MII/RMII interface
• Manufacturer: INFINEON [Infineon Technologies AG]

Micrel, Inc.
January 2011
Address
Register 177 (0xB1): Port 1 Control 9
Register 193 (0xC1): Port 2 Control 9
Register 209 (0xD1): Port 3 Control 9
Register 225 (0xE1): Port 4 Control 9
Register 241 (0xF1): Port 5 Control 9
7 – 2
1
Register 178 (0xB2): Port 1 Control 10
Register 194 (0xC2): Port 2 Control 10
Register 210 (0xD2): Port 3 Control 10
Register 226 (0xE2): Port 4 Control 10
Register 242 (0xF2): Port 5 Control 10
6 – 0
Register 179 (0xB3): Port 1 Control 11
Register 195 (0xC3): Port 2 Control 11
Register 211 (0xD3): Port 3 Control 11
Register 227 (0xE3): Port 4 Control 11
Register 243 (0xF3): Port 5 Control 11
6 – 0
0
7
7
Enable Port Transmit Queue 3
Ratio
Port Transmit Queue 3
Ratio[6:0]
Enable Port Transmit Queue 2
Ratio
Port Transmit Queue 2
Ratio[6:0]
Name
Reserved
4 Queue Split Enable
Enable Dropping Tag
Description
This bit in combination with Register16/32/48/64/80
bit 0 will select the split of ½/4 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.
0, strict priority, will transmit all the packets from
this priority queue 2 before transmit lower priority
queue.
1, bit[6:0] reflect the packet number allow to
transmit from this priority queue 1 within a certain
time.
Packet number for Transmit Queue 2 for high/low
priority packets in high/low priority packets in four
queues mode.
82
Mode
KSZ8895MQ/RQ/FMQ
R/W
R/W
R/W
R/W
R/W
R/W
RO
M9999-012011-1.2
0000000
0001000
0000100
Default
0
0
1
1