Datasheet

16-bit Non-PCI Small Form Factor 10/100 Ethernet Controller with Variable Voltage I/O & HP Auto-MDIX Support

Datasheet

SMSC LAN9220 81 Revision 2.9 (03-01-12)

DATASHEET

4 IRQ Polarity (IRQ_POL) – When cleared, enables the IRQ line to

function as an active low output. When set, the IRQ output is active high.

When IRQ is configured as an open-drain output this field is ignored,

and the interrupt output is always active low.

R/W

NASR

3-1 Reserved RO -

0 IRQ Buffer Type (IRQ_TYPE) – When cleared, enables IRQ to function

as an open-drain buffer for use in a Wired-Or Interrupt configuration.

When set, the IRQ output is a Push-Pull driver. When configured as an

open-drain output the IRQ_POL field is ignored, and the interrupt output

is always active low.

R/W

NASR

BITS DESCRIPTION TYPE DEFAULT