LAN9500 Datasheet, PDF (19/213 Pages) SMSC Corporation – USB 2.0 to 10/100 Ethernet Controller Promiscuous mode

LAN950x
TABLE 3-4: MISCELLANEOUS PINS (CONTINUED)
Num Pins
Name
Symbol
Buffer
Type
Description
Ethernet Speed
Indicator LED
nSPD_LED
OD12
(PU)
This pin is driven low (LED on) when the Ethernet
operating speed is 100Mbs, or during auto-
negotiation. This pin is driven high during 10Mbs
operation, or during line isolation.
General GPIO10
Purpose I/O 10
1
IS/O12/
OD12
(PU)
This General Purpose I/O pin is fully
programmable as either a push-pull output, an
open-drain output, or a Schmitt-triggered input.
Note 1: (LAN9500A/LAN9500Ai ONLY):
This pin may serve as a wakeup pin
whose detection mode is selectable
when External PHY and PME modes of
operation are in effect. Refer to
Section 6.0 “PME Operation” for addi-
tional information.
2: By default this pin is configured as a
GPIO.
Detect
Upstream
VBUS Power
VBUS_DET
IS_5V
(PD)
Detects state of upstream bus power.
For bus powered applications, this pin must be tied
to VDD33IO.
For self powered applications where the device is
permanently attached to a host, VBUS_DET
should be pulled to VDD33IO. For other self
1
powered applications, refer to the device reference
schematic for additional connection information.
Note:
(LAN9500A/LAN9500Ai ONLY):
This pin may be used to signal bus power
availability when PME mode of operation
is in effect. Refer to Section 6.0 “PME
Operation” for additional information.
Test 1
TEST1
-
This pin must always be connected to VDD33IO
1
for proper operation.
Test 2
TEST2
-
This pin must always be connected to VSS for
1
proper operation.
1
Test 3
TEST3
-
This pin must always be connected to VSS for
proper operation.
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DS00001875A-page 19