LAN9313 datasheet(153/398 Pages) SMSC

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Three Port 10/100 Managed Ethernet Switch with MII

Datasheet

SMSC LAN9313/LAN9313i

153

Revision 1.2 (04-08-08)

DATASHEET

13.1.1.2

Interrupt Status Register (INT_STS)

This register contains the current status of the generated interrupts. A value of 1 indicates the

corresponding interrupt conditions have been met, while a value of 0 indicates the interrupt conditions

have not been met. The bits of this register reflect the status of the interrupt source regardless of

whether the source has been enabled as an interrupt in the Interrupt Enable Register (INT_EN). Where

indicated as R/WC, writing a 1 to the corresponding bits acknowledges and clears the interrupt.

Offset:

058h

Size:

32 bits

BITS

DESCRIPTION

TYPE

DEFAULT

Software Interrupt (SW_INT)

This interrupt is generated when the SW_INT_EN bit of the Interrupt Enable

R/WC

Device Ready (READY)

This interrupt indicates that the LAN9313/LAN9313i is ready to be

accessed after a power-up or reset condition.

R/WC

1588 Interrupt Event (1588_EVNT)

This bit indicates an interrupt event from the IEEE 1588 module. This bit

should be used in conjunction with the 1588 Interrupt Status and Enable

event within the 1588 module.

Switch Fabric Interrupt Event (SWITCH_INT)

This bit indicates an interrupt event from the Switch Fabric. This bit should

be used in conjunction with the Switch Global Interrupt Pending Register

(SW_IPR) to determine the source of the interrupt event within the Switch

Fabric.

Port 2 PHY Interrupt Event (PHY_INT2)

This bit indicates an interrupt event from the Port 2 PHY. The source of the

interrupt can be determined by polling the Port x PHY Interrupt Source

Flags Register (PHY_INTERRUPT_SOURCE_x).

Port 1 PHY Interrupt Event (PHY_INT1)

This bit indicates an interrupt event from the Port 1 PHY. The source of the

interrupt can be determined by polling the Port x PHY Interrupt Source

Flags Register (PHY_INTERRUPT_SOURCE_x).

25:20

RESERVED

GP Timer (GPT_INT)

This interrupt is issued when the General Purpose Timer Count Register

(GPT_CNT) wraps past zero to FFFFh.

R/WC

18:13

RESERVED

GPIO Interrupt Event (GPIO)

This bit indicates an interrupt event from the General Purpose I/O. The

source of the interrupt can be determined by polling the General Purpose

I/O Interrupt Status and Enable Register (GPIO_INT_STS_EN)

11:0

RESERVED

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