LAN9252SLASHML datasheet(105/329 Pages) MICROCHIP

部件名	LAN9252/ML

功能描述	2/3-Port EtherCAT® Slave Controller with Integrated Ethernet PHYs

PDF	329 Pages

Scroll/Zoom	100%

制造商	MICROCHIP [Microchip Technology]

网页	http://www.microchip.com

标志

105 / 329 page

 2015 Microchip Technology Inc.

DS00001909A-page 105

LAN9252

Figure 10-1 illustrates the Enable SQI instruction.

10.2.3.2

Reset SQI

The Reset SQI instruction changes the mode of operation to SPI. This instruction is supported in SPI and SQI bus pro-

tocols with clock frequencies up to 80 MHz.

The SPI/SQI slave interface is selected by first bringing SCS# active. The 8-bit RSTQIO instruction, FFh, is input into

the SI/SIO[0] pin, one bit per clock, in SPI mode and into the SIO[3:0] pins, four bits per clock, in SQI mode. The SCS#

input is brought inactive to conclude the cycle.

Figure 10-2 illustrates the Reset SQI instruction for SPI mode. Figure 10-3 illustrates the Reset SQI instruction for SQI

mode.

FIGURE 10-1:

ENABLE SQI

FIGURE 10-2:

SPI MODE RESET SQI

SPI Enable SQI

SCK (active high)

Instruction

SCK (active low)

SCS#

SPI Mode Reset SQI

SCK (active high)

1111

Instruction

SCK (active low)

SCS#

LAN9252/ML 数据表(PDF) 105 Page - Microchip Technology