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LAN8810 Datasheet(PDF) 24 Page - Microchip Technology

Part # LAN8810
Description  GMII 10/100/1000 Ethernet Transceiver
PDF  83 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN8810 Datasheet(HTML) 24 Page - Microchip Technology

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LAN8810/LAN8810I
DS00001870B-page 24
 2009-2015 Microchip Technology Inc.
3.8.1.2.1
Configuring the SMI Address (CONFIG[1:0])
The SMI address may be configured via hardware to any value between 0 and 7. If an address greater than 7 is required,
the user can configure the PHY address using Software Configuration via the PHYADD[4:0] field of the 10/100 Special
Modes Register (after SMI communication at an address is established).
The CONFIG1 pin is used to configure both the SMI address and the value of the Pause Operation (PAUSE) bit in the
Auto Negotiation Advertisement Register. The user must first determine the desired PAUSE value. The configuration
pin values for CONFIG1 and CONFIG0 should then be selected using Table 3-6 (PAUSE=0) or Table 3-7 (PAUSE=1),
respectively.
3.8.1.2.2
Configuring the Mode of Operation (CONFIG[3:2])
This section describes the initial modes of operation that are available using the CONFIG[3:2] configuration pins. The
user may configure additional modes using Software Configuration when the CONFIG[3:2] options do not include the
desired mode.
The CONFIG3 pin is used to configure the values of the MOD field (19.15:11) The configuration pin values for CONFIG3
and CONFIG2 should be selected using Table 3-8. These tables also detail how the MOD field of the Extended Mode
Control/Status Register will be configured.
TABLE 3-7:
SMI ADDRESS CONFIGURATION WITH PAUSE=0
PHYADD[2:0]
CONFIG1
CONFIG0
000
CPV(0)
CPV(0)
001
CPV(0)
CPV(1)
010
CPV(0)
CPV(2)
011
CPV(0)
CPV(3)
100
CPV(1)
CPV(0)
101
CPV(1)
CPV(1)
110
CPV(1)
CPV(2)
111
CPV(1)
CPV(3)
TABLE 3-8:
SMI ADDRESS CONFIGURATION WITH PAUSE=1
PHYADD[2:0]
CONFIG1
CONFIG0
000
CPV(2)
CPV(0)
001
CPV(2)
CPV(1)
010
CPV(2)
CPV(2)
011
CPV(2)
CPV(3)
100
CPV(3)
CPV(0)
101
CPV(3)
CPV(1)
110
CPV(3)
CPV(2)
111
CPV(3)
CPV(3)



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