BECKHOFF PHY - Manual (Page 12)

Appendix
Slave Controller – Application Note PHY Selection Guide 9
5.2.2.1 Proposed solutions with Enhanced Link Detection
Transceiver
Ethernet PHY
nRESET nRESET
V CC
Auto-negotiation
restart detection
ESC Vcc
nReset
MDC/MDIO
RX/TX
MDC/MDIO
CPLD/µC
Figure 6: CPLD/µC detects auto-negotiation restart command and resets PHY and transceiver
Ethernet PHY
nRESET nRESET
V CC
Auto-negotiation
restart detection
ESC
Transceiver
MDC/MDIO
Vcc
RX/TX
MDC/MDIO
nReset
CPLD/µC
nPOWERDOWN
Figure 7: CPLD/µC detects auto-negotiation restart command and powers down PHY and transceiver
NOTE: In Figure 7, the CPLD/µC is connected to the nRESET signal of the ESC/PHY to power-down/reset the transceiver
while the ESC/PHY is in reset state.
6 Gigabit Ethernet PHYs
Gigabit Ethernet PHYs can generally be used for EtherCAT, as long as the link speed is restricted to 100 Mbit/s,
either by strapping options of the PHY or by using the autonegotiation advertisement.
Some ESCs are capable of restricting the autonegotiation advertisement of Gigabit Ethernet PHYs to 100 Mbit/s
full-duplex if MI link detection and configuration is enabled.
Nevertheless, all other requirements of EtherCAT have to be fulfilled – especially the link loss reaction time
(Enhanced Link Detection might be required).
7 Appendix
7.1 Support and Service
Beckhoff and our partners around the world offer comprehensive support and service, making available fast and
competent assistance with all questions related to Beckhoff products and system solutions.
7.1.1 Beckhoff’s branch offices and representatives
Please contact your Beckhoff branch office or representative for local support and service on Beckhoff products!
The addresses of Beckhoff's branch offices and representatives round the world can be found on her internet
pages:
http://www.beckhoff.com
You will also find further documentation for Beckhoff components there.
7.2 Beckhoff Headquarters
Beckhoff Automation GmbH
Eiserstr. 5
33415 Verl
Germany
Phone: +49 (0) 5246 963-0
Fax: +49 (0) 5246 963-198
E-mail: [email protected]
Web: www.beckhoff.com
Beckhoff Support
Support offers you comprehensive technical assistance, helping you not only with the application of individual
Beckhoff products, but also with other, wide-ranging services:
 world-wide support
 design, programming and commissioning of complex automation systems
 and extensive training program for Beckhoff system components
Hotline: +49 (0) 5246 963-157
Fax: +49 (0) 5246 963-9157
E-mail: [email protected]
Beckhoff Service
The Beckhoff Service Center supports you in all matters of after-sales service:
 on-site service
 repair service
 spare parts service
 hotline service
Hotline: +49 (0) 5246 963-460
Fax: +49 (0) 5246 963-479
E-mail: [email protected]