LAN9252SLASHML datasheet(50/329 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

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50 / 329 page

LAN9252

DS00001909A-page 50

 2015 Microchip Technology Inc.

6.4

Device Ready Operation

The device supports a Ready status register bit that indicates to the Host software when the device is fully ready for

operation. This bit may be read via the Power Management Control Register (PMT_CTRL) or the Hardware Configura-

tion Register (HW_CFG).

Following power-up reset, RST# reset, EtherCAT chip level reset or digital reset (see Section 6.2, "Resets"), the Device

Ready (READY) bit indicates that the device has read, and is configured from, the contents of the EEPROM.

An EtherCAT reset via the Reset Control Register (RESET_CTL) will cause the EtherCAT core to reload from the

EEPROM, temporarily causing the Device Ready (READY) to be low.

Entry into any power savings state (see Section 6.3.4, "Chip Level Power Management") other than D0 will cause

Device Ready (READY) to be low. Upon wake-up, the Device Ready (READY) bit will go high once the device is

returned to power savings state D0 and the PLL has re-stabilized.

LAN9252/ML 数据表(PDF) 50 Page - Microchip Technology