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DM9621 Datasheet(PDF) 49 Page - Davicom Semiconductor, Inc.

Part # DM9621
Description  USB2.0 to 10/100M Fast Ethernet Controller
PDF  66 Pages
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Manufacturer  DAVICOM [Davicom Semiconductor, Inc.]
Direct Link  http://www.davicom.com.tw
Logo DAVICOM - Davicom Semiconductor, Inc.

DM9621 Datasheet(HTML) 49 Page - Davicom Semiconductor, Inc.

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DM9621
USB2.0 to Fast Ethernet Controller
Preliminary
49
Version: DM9621 -14-DS-P02
February 23, 2011
String3 Descriptor/UNICODE String
Offset
Field
Size
Value
Description
0
bLength
1
04H
Descriptor length
1
bDescriptorType
1
03H
STRING Descriptor Type
2~
bString
2
0031H Serial Number
7.2 Ethernet Functional Description
7.2.1 Serial Management Interface
MDC
MDIO
DM9621
PHY
MDC
MDIO
External PHY can be accessed via the MDC, MDIO
MII SMI
SMI - Read Frame Structure
32 "1"s
0
110
A1
A0
R7
R6
R5
R0
Z
0
Idle Preamble
SFD
Op Code
Device Address
Register Address
Turn Around
Data
Idle
Read
Write
SMI_C
SMI_D read
D15
D14
D1
D0
//
//
SMI_R_8203
SMI - Write Frame Structure
32 "1"s
0
1
1
0
A1
A0
R7
R6
R5
R0
1
0
D15
D14
D1
D0
Idle Preamble
SFD
Op Code
Device Address
Register Address
Turn Around
Data
Idle
Write
SMI_C
SMI_D write
SMI_W_8203



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