lan9215i Standard Microsystems Corp., lan9215i Datasheet - Page 44
lan9215i
Manufacturer Part Number
lan9215i
Description
Lan9215i 16-bit Non-pci 10/100 Ethernet Controller With Hp Auto-mdix And Industrial Temperature Support
Manufacturer
Standard Microsystems Corp.
Datasheet
1.LAN9215I.pdf
(138 pages)
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Revision 2.3 (08-06-08)
The process is complete. The LAN9215i is now operational using the newly selected MII device.
The above procedure must be repeated each time the MII port is switched. The procedure is identical
when switching from internal PHY to external MII, or vice-versa.
Set EXT_PHY_SEL described in
the desired MII port. This step switches the RXD[3:0], RX_DV, RX_ER, TXD[3:0], TX_EN, CRS
and COL signals to the desired port.
Set PHY_CLK_SEL described in
the desired port. This must be the same port that is selected by EXT_PHY_SEL.
The host must wait a period of time of not less than 5 cycles of the slowest, newly enabled clock
before executing the next step in this procedure.
Enable the LAN9215i transmitter.
Enable the LAN9215i receiver.
and will determine the required wait-time. In this case the TX_CLK and RX_CLK period for
the internal PHY is 400ns, therefore the host must wait 2us (5*400ns) before proceeding. If
the clocks of the device being deselected by the switch are not running, they are not
considered in this calculation.
DATASHEET
Section 5.3.9, "HW_CFG—Hardware Configuration Register"
Section 5.3.9, "HW_CFG—Hardware Configuration Register"
16-bit Non-PCI 10/100 Ethernet Controller with HP Auto-MDIX and Industrial Temperature Support
44
SMSC LAN9215i
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