LAN9730 Datasheet, PDF (20/222 Pages) SMSC Corporation – High-Speed Inter-Chip (HSIC) USB 2.0

LAN9730/LAN9730i
TABLE 2-4: MISCELLANEOUS PINS
Num Pins
Name
1
PHY Select
Symbol
PHY_SEL
1
System Reset
nRESET
1
Ethernet
nFDX_LED
Full-Duplex
Indicator LED
General Pur-
pose I/O 8
GPIO8
Buffer
Type
IS
(PD)
IS
(PU)
OD12
(PU)
Description
Selects whether to use the internal Ethernet PHY
or the external PHY connected to the MII port.
0 = Internal PHY is used.
1 = External PHY is used.
Note:
When in External PHY Mode, the
internal PHY is placed into general
power down after a POR. Refer to
Section 4.6, "10/100 Internal Ethernet
PHY" for details.
This active-low pin allows external hardware to
reset the device.
Note:
This pin may be used to signal
PME_CLEAR when PME Mode of
operation is in effect. Refer to Chapter
5.0, "PME Operation" for additional
information.
This pin is driven low (LED on) when the Ethernet
link is operating in Full-Duplex mode.
IS/O12/
OD12
(PU)
This General Purpose I/O pin is fully programma-
ble as either a push-pull output, an open-drain
output or a Schmitt-triggered input.
Note:
This pin may be used to signal PME
when External PHY and PME Modes of
operation are in effect. Refer to Chapter
5.0, "PME Operation" for additional
information.
Note: By default this pin is configured as a
GPIO.
DS00001946A-page 20
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