LAN9313 Datasheet, PDF (152/398 Pages) SMSC Corporation – Three Port 10/100 Managed Ethernet Switch with MII

Three Port 10/100 Managed Ethernet Switch with MII
Datasheet
BITS
DESCRIPTION
TYPE
4 IRQ Polarity (IRQ_POL)
R/W
When cleared, this bit enables the IRQ line to function as an active low
NASR
output. When set, the IRQ output is active high. When the IRQ is configured _{Note 13.1}
as an open-drain output (via the IRQ_TYPE bit), this bit is ignored, and the
interrupt is always active low.
0: IRQ active low output
1: IRQ active high output
3:1 RESERVED
RO
0 IRQ Buffer Type (IRQ_TYPE)
R/W
When this bit is cleared, the IRQ pin functions as an open-drain output for _NASR
use in a wired-or interrupt configuration. When set, the IRQ is a push-pull _{Note 13.1}
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
DEFAULT
0b
-
0b
Note 13.1 Register bits designated as NASR are not reset when the DIGITAL_RST bit in the Reset
Control Register (RESET_CTL) is set.
Revision 1.2 (04-08-08)
152
DATASHEET
SMSC LAN9313/LAN9313i