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ASIX ELECTRONICS CORPORATION
4
AX88658AB 8-Port 10/100/1000BASE-T Ethernet Switch
CONFIDENTIAL
CONTENTS
1.0 AX88658A OVERVIEW ...........................................................................................................................................6
1.1 G
ENERAL
D
ESCRIPTION
............................................................................................................................6
1.2 AX88658A B
LOCK
D
IAGRAM
..................................................................................................6
1.3 P
IN
C
ONNECTION
D
IAGRAM
...................................................................................................................7
2.0 I/O DEFINITION.......................................................................................................................................................8
2.1 RGMII/GMII/MII I
NTERFACE
.............................................................................................................8
2.2 M
ISCELLANEOUS
........................................................................................................................................11
3.0 FUNCTIONAL DESCRIPTION............................................................................................................................13
3.1 I
NTRODUCTION
............................................................................................................................................13
3.2 P
ACKET
F
ILTERING AND
F
ORWARDING
P
ROCESS
.....................................................................13
3.3 MAC A
DDRESS
R
OUTING
,
L
EARNING AND
A
GING
P
ROCESS
.............................................13
3.4 F
ULL
D
UPLEX
802.3
X
F
LOW
C
ONTROL
.........................................................................................13
3.5 H
ALF
D
UPLEX
B
ACK
P
RESSURE
C
ONTROL
..................................................................................13
3.6 MII P
OLLING
................................................................................................................................................13
3.7 P
ORT
-B
ASED
Q
O
S: P
ORT
-P
AIR
.........................................................................................................13
3.8 VLAN
AND
B
ROADCAST
S
TORMING
P
REVENTION
................................................................14
3.9 S
ECURITY
O
PERATION
- P
ORT
SA
RESTRICTION
.....................................................................14
3.10 I
NGRESS
/E
GRESS
B
ANDWIDTH
C
ONTROL
S
CHEME
.............................................................14
3.11 P
ORT
M
IRRORING
....................................................................................................................................14
4.0 REGISTER DESCRIPTIONS................................................................................................................................15
5.0 ELECTRICAL SPECIFICATION AND TIMING...............................................................................................23
5.1 A
BSOLUTE
M
AXIMUM
R
ATINGS
........................................................................................................23
5.2 G
ENERAL
O
PERATION
C
ONDITIONS
.................................................................................................23
5.3 DC C
HARACTERISTICS
............................................................................................................................23
5.4 AC
SPECIFICATIONS
..................................................................................................................................24
6.0 PACKAGE INFORMATION.................................................................................................................................29
APPENDIX A: SYSTEM APPLICATIONS ...............................................................................................................32
APPENDIX B: DESIGN NOTE....................................................................................................................................34
APPENDIX C: WEIGHT SETTING FOR QOS ........................................................................................................35
APPENDIX D: RESOLUTION INGRESS/EGRESS FOR BANDWIDTH CONTROL.......................................35