lan9303m Standard Microsystems Corp., lan9303m Datasheet - Page 42
lan9303m
Manufacturer Part Number
lan9303m
Description
Small Form Factor Three Port 10/100 Managed Ethernet Switch With Dual Mii/rmii/turbo Mii
Manufacturer
Standard Microsystems Corp.
Datasheet
1.LAN9303M.pdf
(380 pages)
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Revision 1.3 (08-27-09)
PINS
NUM
1
LED 1 Polarity
MDIX Enable
Configuration
Port 2 Auto-
GPIO 1
NAME
LED 1
Strap
and
Table 3.6 GPIO/LED/Configuration Straps (continued)
AMDIX2_LED1P
SYMBOL
GPIO1
LED1
Small Form Factor Three Port 10/100 Managed Ethernet Switch with Dual MII/RMII/Turbo MII
DATASHEET
BUFFER
IS/O12/
OD12/
TYPE
OD12
OS12
O12/
(PU)
(PU)
IS
42
This pin is configured to operate as an LED when
the LED 1 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
AMDIX2_LED1P
This pin is configured to operate as a GPIO when
the LED 1 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 default for the Auto-MDIX
soft-strap for LAN Port 2, as well as the polarity of
the LED 1 pin when it is an open-drain or open-
source output. See
The strap value determines whether or not LAN
Port 2 Auto-MDIX is enables as follows:
0 = Disabled
1 = Enabled
For LED 1, 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.
General Purpose I/O Configuration
field in the
strap value sampled at reset.
DESCRIPTION
Note
and is configured to be either
is set. The buffer type
is clear. The pin is fully
and the
3.8.
SMSC LAN9303M/LAN9303Mi
LED Configuration
LED Configuration
LED Configuration
(GPIO_DATA_DIR).
LED Function 1-0
General Purpose
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