LAN9311-NU Standard Microsystems (SMSC), LAN9311-NU Datasheet - Page 194

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LAN9311-NU

Manufacturer Part Number
LAN9311-NU
Description
TWO PORT 10/100 MANAGED ETHERNET SWITCH
Manufacturer
Standard Microsystems (SMSC)
Datasheet

Specifications of LAN9311-NU

Lead Free Status / RoHS Status
Compliant

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Revision 1.7 (06-29-10)
BITS
11:0
GPIO Buffer Type 11-0 (GPIOBUF[11:0])
This field sets the buffer types of the 12 GPIO pins.
0: Corresponding GPIO pin configured as an open-drain driver
1: Corresponding GPIO pin configured as a push/pull driver
As an open-drain driver, the output pin is driven low when the corresponding
data register is cleared, and is not driven when the corresponding data
register is set.
As an open-drain driver used for 1588 Clock Events, the corresponding
GPIO_EVENT_POL_8 and GPIO_EVENT_POL_9 bits determine when the
corresponding pin is driven per the following table:
GPIOx Clock Event Polarity
0
0
1
1
DESCRIPTION
1588 Clock Event
yes
yes
DATASHEET
no
no
194
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
driven low
driven low
not driven
not driven
Pin State
TYPE
R/W
SMSC LAN9311/LAN9311i
DEFAULT
Datasheet
0h

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