LAN9220 datasheet(70/142 Pages) MICROCHIP

70 / 142 page

LAN9220

DS00002417A-page 70

 2006-2017 Microchip Technology Inc.

5.3.3

INT_STS—INTERRUPT STATUS REGISTER

This register contains the current status of the generated interrupts. Writing a 1 to the corresponding bits acknowledges

and clears the interrupt.

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

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

Offset:

58h

Size:

32 bits

Bits

Description

Type

Default

Software Interrupt (SW_INT). This interrupt is generated when the

SW_INT_EN bit is set high. Writing a one clears this interrupt.

R/WC

30-26

Reserved

TX Stopped (TXSTOP_INT). This interrupt is issued when STOP_TX bit

in TX_CFG is set, and the transmitter is halted.

R/WC

RX Stopped (RXSTOP_INT). This interrupt is issued when the receiver is

halted.

R/WC

RX Dropped Frame Counter Halfway (RXDFH_INT). This interrupt is

issued when the RX Dropped Frames Counter counts past its halfway

point (7FFFFFFFh to 80000000h).

R/WC

Reserved

TX IOC Interrupt (TX_IOC). When a buffer with the IOC flag set has

finished being loaded into the TX FIFO, this interrupt is generated.

R/WC

RX DMA Interrupt (RXD_INT). This interrupt is issued when the amount

of data programmed in the RX DMA Count (RX_DMA_CNT) field of the

RX_CFG register has been transferred out of the RX FIFO.

R/WC

GP Timer (GPT_INT). This interrupt is issued when the General Purpose

timer wraps past zero to FFFFh.

R/WC

PHY (PHY_INT). Indicates a PHY Interrupt event.

Bits

Description

Type

Default

LAN9220 датащи(PDF) 70 Page - Microchip Technology

LAN9220 датащи(HTML) 70 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL