
ASIX ELECTRONICS CORPORATION
18
AX88658AB 8-Port 10/100/1000BASE-T Ethernet Switch
CONFIDENTIAL
4.12 Register 0B
BIT
15
14:12
11
10:8
7
6:4
3
2:0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
DESCRIPTION
All_Bit of PortPair #3 when QoS[0] is high
Port_ID of PortPair #3 when QoS[0] is high
All_Bit of PortPair #3 when QoS[0] is high
Port_ID of PortPair #3 when QoS[0] is high
All_Bit of PortPair #2 when QoS[0] is high
Port_ID of PortPair #2 when QoS[0] is high
All_Bit of PortPair #2 when QoS[0] is high
Port_ID of PortPair #2 when QoS[0] is high
4.13 Register 0C
BIT
15:12
11:10
9:0
R/W
R/W
R/W
R/W
DESCRIPTION
WeightForLowQue: Weight for low priority queues when QoS is active (see Appendix C)
Reserved
LowWaterMark of low priority queues when drop packets
4.14 Register 0D
BIT
15:12
11:10
R/W
R/W
R/W
DESCRIPTION
WeightForHighQue: Weight for high priority queues when QoS is active (see Appendix C)
Maximum number of broadcast frames that can be accumulated in each input frame buffer.
00: disable broadcast storm control
01: 31 frames
10: 47 frames
11: 63 frames
LowWaterMark of high priority queues when drop packets
9:0
R/W
4.15 Register 0E
BIT
15
14
R/W
RO
R/W
DESCRIPTION
RESERVED
802.3x Flow control frame recognition control
0: check for MAC control frame DA MAC address in addition to the MAC control type field
1: check only the MAC control type field
Setting for maximum length of packet that received
0: 1518 byte
1: 1522 byte
RESERVED
Software Reset (Only reset the switch kernel)
0: active
1: disable
Back-off algorithm selection
0: disable. Device will perform the IEEE standard exponential back off algorithm when a
collision occurs.
1: enable. When collisions occur, the MACs will back off up to 7 slots.
Note :: SuperMac v.s. FlowCtrl
0: stop generate JAM patterns after some collision that is defined by MaxJam[5:0]
1: Never stop back-pressure (Note: Only availible for Ethernet..Not FastEternet)
RESERVED
RESERVED
13
R/W
12:11
10
R/W
R/W
9
R/W
8
R/W
7
6
R/W
R/W