lan9303 Standard Microsystems Corp., lan9303 Datasheet - Page 33

• Manufacturer Part Number: lan9303
• Description: Small Form Factor Three Port 10/100 Managed Ethernet Switch With Single Mii/rmii/turbo Mii
• Manufacturer: Standard Microsystems Corp.

Small Form Factor Three Port 10/100 Managed Ethernet Switch with Single MII/RMII/Turbo MII
Datasheet
SMSC LAN9303/LAN9303i
PINS
NUM
1
LED 4 Polarity
Configuration
Management
Mode[1] and
GPIO 4
NAME
LED 4
Serial
Strap
Table 3.5 GPIO/LED/Configuration Straps (continued)
MNGT1_LED4P
SYMBOL
GPIO4
LED4
DATASHEET
BUFFER
IS/O12/
OD12/
TYPE
OD12
OS12
O12/
(PU)
(PU)
IS
33
This pin is configured to operate as an LED when
the LED 4 Enable bit in the
Register (LED_CFG)
depends on the setting of the
(LED_FUN[1:0])
Register (LED_CFG)
an push-pull or open-drain/open-source output.
When selected as an open-drain/open-source
output, the polarity of this pin depends up the
MNGT1_LED4P
This pin is configured to operate as a GPIO when
the LED 4 Enable bit of the
Register (LED_CFG)
programmable as either a push-pull output, an
open-drain output, or a Schmitt-triggered input by
writing the
Register (GPIO_CFG)
I/O Data & Direction Register
This strap configures the Serial Management
Mode, as well as the polarity of the LED 4 pin when
it is an open-drain or open-source output. See
Note
If the strap value is 0:
The LED is set as active high, since it is assumed
that a LED to ground is used as the pull-down.
If the strap value is 1:
The LED is set as active low, since it is assumed
that a LED to VDD is used as the pull-up.
3.6.
General Purpose I/O Configuration
field in the
strap value sampled at reset.
DESCRIPTION
and is configured to be either
is set. The buffer type
is clear. The pin is fully
and the
LED Configuration
LED Configuration
LED Configuration
(GPIO_DATA_DIR).
LED Function 1-0
General Purpose
Revision 1.3 (08-27-09)