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LAN9730 Datasheet(PDF) 191 Page - Microchip Technology

Part # LAN9730
Description  High-Speed Inter-Chip USB 2.0 to 10/100 Ethernet Controller
PDF  222 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN9730 Datasheet(HTML) 191 Page - Microchip Technology

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 2012-2015 Microchip Technology Inc.
DS00001946A-page 191
LAN9730/LAN9730i
6.5.12
SPECIAL CONTROL/STATUS INDICATIONS REGISTER
Index (In Decimal):
27
Size:
16 bits
Bits
Description
Type
Default
15
Override AUTOMDIX_EN Strap
0 = AUTOMDIX_EN configuration strap enables or disables HP Auto MDIX
1 = Override AUTOMDIX_EN configuration strap. PHY Register 27.14 and
27.13 determine MDIX function
R/W
NASR
0b
14
Auto-MDIX Enable
Only effective when 27.15 = 1, otherwise ignored.
0 = Disable Auto-MDIX. 27.13 determines normal or reversed connection.
1 = Enable Auto-MDIX. 27.13 must be set to 0.
R/W
NASR
0b
13
Auto-MDIX State
Only effective when 27.15 = 1, otherwise ignored.
When 27.14 = 0 (manually set MDIX state):
0 = No crossover (TPO = output, TPI = input)
1 = Crossover (TPO = input, TPI = output)
When 27.14 = 1 (automatic MDIX) this bit must be set to 0.
Do not use the combination 27.15=1, 27.14=1, 27.13=1.
R/W
NASR
0b
12:5
RESERVED
RO
-
4
XPOL
Polarity state of the 10BASE-T:
0 = Normal polarity
1 = Reversed polarity
RO
0b
3:0
RESERVED
RO
-



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