
ASIX ELECTRONICS CORPORATION
2
AX88172 PRELIMINARY
CONTENTS
1.0 INTRODUCTION....................................................................................................................... 4
1.1 G
ENERAL
D
ESCRIPTION
:............................................................................................................. 4
1.2 AX88172 B
LOCK
D
IAGRAM
:...................................................................................................... 4
1.3 AX88172 P
IN
C
ONNECTION
D
IAGRAM
....................................................................................... 5
2.0 SIGNAL DESCRIPTION........................................................................................................... 6
3.0 EEPROM MEMORY MAPPING............................................................................................ 9
4.0 USB COMMANDS ................................................................................................................... 11
4.1 USB
STANDARD COMMANDS
.................................................................................................... 11
4.2 USB V
ENDOR
C
OMMANDS
....................................................................................................... 12
5.0 USB CONFIGURATION STRUCTURE .............................................................................. 14
5.1 USB C
ONFIGURATION
.............................................................................................................. 14
5.2 USB I
NTERFACE
....................................................................................................................... 14
5.3 USB E
NDPOINTS
. ..................................................................................................................... 14
6.0 ELECTRICAL SPECIFICATION AND TIMINGS............................................................ 15
6.1 A
BSOLUTE
M
AXIMUM
R
ATINGS
............................................................................................... 15
6.2 G
ENERAL
O
PERATION
C
ONDITIONS
.......................................................................................... 15
6.3 DC C
HARACTERISTICS
............................................................................................................. 15
6.4 A.C. T
IMING
C
HARACTERISTICS
............................................................................................... 16
6.4.1 12M_XIN........................................................................................................................... 16
6.4.2 Reset Timing...................................................................................................................... 16
6.4.3 MII Timing......................................................................................................................... 17
6.4.4 STATION MANAGEMENT TIMING................................................................................. 18
6.4.5 SERIAL EEPROM TIMING.............................................................................................. 19
7.0 PACKAGE INFORMATION.................................................................................................. 20
APPENDIX A: SYSTEM APPLICATIONS................................................................................ 21
A.1 USB
TO
F
AST
E
THERNET
C
ONVERTER
.................................................................................... 21
A.2 USB
TO
F
AST
E
THERNET AND
/
OR
H
OME
LAN C
OMBO SOLUTION
........................................... 21
DEMONSTRATION CIRCUIT A: AX88172 (ED2 VERSION) + ETHERNET PHY(8201L)
........................................................................................................................................................... 22
DEMONSTRATION CIRCUIT B: AX88172 (ED3 VERSION) + ETHERNET PHY
(8201LBL)........................................................................................................................................ 24
REMARK:....................................................................................................................................... 26
REVISIONS HISTORY................................................................................................................. 27