LAN9117 Datasheet, PDF (36/114 Pages) SMSC Corporation – HIGH PERFORMANCE SINGLE-CHIP 10/100 NON-PCI ETHERNET CONTROLLER

LAN9117
FIGURE 3-12:
MII SWITCHING PROCEDURE
Using SMI, Set
1
Internal PHY and
External PHY to a
Stable State
Set
8 EXT_PHY_SEL to
Desired MII Port
2 ^{Halt Transmitter}
Set
9 ^{PHY_CLK_SEL to}
Desired MII Port
3
TX Stopped?
NO
YES
4 ^{Halt Receiver}
5 ^{RX Stopped?}
NO
YES
Set
PHY_CLK_SEL
6
to 10b
10
Clocks
Running
NO
YES
11
Enable RX
12
Enable TX
13
Complete
7 Clocks Halted?
NO
YES
DS00002267A-page 36
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