LAN8810I-AKZE Datasheet, PDF (30/100 Pages) Microchip Technology – GMII 10/100/1000 Ethernet Transceiver with HP Auto-MDIX Support

GMII 10/100/1000 Ethernet Transceiver with HP Auto-MDIX Support
Datasheet
Table 3.6 Hardware Connection Determines Configuration Pin Value (CPV)
CONFIG[X]
CONNECTS TO:
GND
100_LED
1000_LED
VDD
VALUE
CPV(0)
CPV(1)
CPV(2)
CPV(3)
3.8.1.2.1
Using the CPV nomenclature for each CONFIG[3:0] pin, Section 3.8.1.2.1 describes how to configure
the SMI address and Section 3.8.1.2.2 describes how to configure the initial mode of operation.
Note: The HPD pin is also a dedicated configuration pin. HPD forces the entire device to power down
except for the management interface. The Hardware Power-Down mode is described in
Section 3.7.3, "Hardware Power-Down," on page 28.
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 3.7 (PAUSE=0) or Table 3.8 (PAUSE=1), respectively.
Table 3.7 SMI Address Configuration with PAUSE=0
PHYADD[2:0]
000
001
010
011
100
101
110
111
CONFIG1
CPV(0)
CPV(0)
CPV(0)
CPV(0)
CPV(1)
CPV(1)
CPV(1)
CPV(1)
CONFIG0
CPV(0)
CPV(1)
CPV(2)
CPV(3)
CPV(0)
CPV(1)
CPV(2)
CPV(3)
Revision 1.0 (02-06-13)
30
DATASHEET
SMSC LAN8810/LAN8810i