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DM9621 Datasheet(PDF) 4 Page - Davicom Semiconductor, Inc.

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

DM9621 Datasheet(HTML) 4 Page - Davicom Semiconductor, Inc.

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DM9621
USB2.0 to Fast Ethernet Controller
Preliminary
4
Version: DM9621 -14-DS-P02
February 23, 2011
6.14 Power Saving Control Register (PSCR) – 1DH ...................................................... 38
7. Functional description........................................................................................................ 39
7.1 USB Functional description ...................................................................................... 39
7.1.1 USB Standard Command ............................................................................... 39
7.1.2 Vendor commands ......................................................................................... 40
7.1.2.1 Register Type .............................................................................................. 40
7.1.2.2 Memory Type............................................................................................... 41
7.1.3 Interface 0 Configuration ................................................................................ 42
7.1.4 Descriptor Values ........................................................................................... 43
7.1.5 Descriptors of string/1/2/3 are loaded from EEPROM .................................... 48
7.2 Ethernet Functional Description................................................................................ 49
7.2.1 Serial Management Interface ......................................................................... 49
7.2.2 100Base-TX Operation................................................................................... 50
7.2.3 4B5B Encoder ................................................................................................ 50
7.2.4 Scrambler ....................................................................................................... 50
7.2.5 Parallel to Serial Converter............................................................................. 50
7.2.6 NRZ to NRZI Encoder .................................................................................... 50
7.2.7 MLT-3 Converter ............................................................................................ 50
7.2.8 MLT-3 Driver .................................................................................................. 50
7.2.9 4B5B Code Group .......................................................................................... 51
7.2.10 100Base-TX Receiver .................................................................................. 52
7.2.11 Signal Detect ................................................................................................ 52
7.2.12 Adaptive Equalization ................................................................................... 52
7.2.13 MLT-3 to NRZI Decoder ............................................................................... 52
7.2.14 Clock Recovery Module................................................................................ 52
7.2.15 NRZI to NRZ................................................................................................. 52
7.2.16 Serial to Parallel ........................................................................................... 52
7.2.17 Descrambler ................................................................................................. 52
7.2.18 Code Group Alignment ................................................................................. 53
7.2.19 4B5B Decoder .............................................................................................. 53
7.2.20 10Base-T Operation ..................................................................................... 53
7.2.21 Collision Detection........................................................................................ 53
7.2.22 Carrier Sense ............................................................................................... 53
7.2.23 Auto-Negotiation........................................................................................... 53


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