LAN9313I SMSC [SMSC Corporation], LAN9313I Datasheet - Page 156

• Manufacturer Part Number: LAN9313I
• Description: Three Port 10/100 Managed Ethernet Switch with MII
• Manufacturer: SMSC [SMSC Corporation]

Revision 1.2 (04-08-08)
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
156
driven low
driven low
not driven
not driven
Pin State
Three Port 10/100 Managed Ethernet Switch with MII
TYPE
R/W
SMSC LAN9313/LAN9313i
DEFAULT
Datasheet
0h