LAN9252SLASHML datasheet(58/329 Pages) MICROCHIP

58 / 329 page

LAN9252

DS00001909A-page 58

 2015 Microchip Technology Inc.

Note 1:

(RESET_CTL) is set.

IRQ Polarity (IRQ_POL)

When cleared, this bit enables the IRQ line to function as an active low out-

put. When set, the IRQ output is active high. When the IRQ is configured as

an open-drain output (via the IRQ_TYPE bit), this bit is ignored and the inter-

rupt is always active low.

0: IRQ active low output

1: IRQ active high output

R/W

NASR

Note 1

3:2

RESERVED

IRQ Clock Select (IRQ_CLK_SELECT)

When this bit is set, the crystal clock may be output on the IRQ pin. This is

intended to be used for system debug purposes in order to observe the clock

and not for any functional purpose.

Note:

When using this bit, the IRQ pin should be set to a push-pull driver.

R/W

IRQ Buffer Type (IRQ_TYPE)

When this bit is cleared, the IRQ pin functions as an open-drain output for

use in a wired-or interrupt configuration. When set, the IRQ is a push-pull

driver.

Note:

When configured as an open-drain output, the IRQ_POL bit is

ignored and the interrupt output is always active low.

0: IRQ pin open-drain output

1: IRQ pin push-pull driver

R/W

NASR

Note 1

Bits

Description

Type

Default

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