Electrical aspects common for both solutions
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Activating the boot mode
Note:
The signal level during the reset and shortly afterwards must be low
in order to force the netRAPID into the boot mode.
4.3
Real-Time Ethernet interface
The netX 90 contains two Ethernet MACs with integrated PHYs. These
PHYs support:
·
10Base-T / 100Base-TX
·
Auto-Negotiation
·
Auto-Crossover
·
Auto-Polarity
The PHYs are fully compliant with IEEE 802.3 / 802.3u to run the protocols:
·
CC-Link IE Basic
·
EtherCAT
·
EtherNet/IP
·
Open Modbus/TCP
·
POWERLINK
·
PROFINET RT and IRT
·
Sercos
·
VARAN
Additionally, the Ethernet MAC includes special logic to support time
synchronization according to IEEE 1588 for various protocols.
4.3.1
Interface description
The NRP H90-RE module drives two Ethernet ports.
The netX 90 processor on the NRP H90-RE module has two on-board
physical layer units (PHYs) for Ethernet communication. As these are
already integrated, the external interface to the Ethernet lines is simple.
Using RJ45 ports with integrated transformers such as the J8064D628ANL
from Pulse Engineering or 203313 from ERNI, only a few passive
components such as resistors and capacitors and transformer(s) are
necessary to match the line impedance. Alternatively, the RJ45 ports can
be built using discrete transformers like H1102 or HX1188 and separate
RJ45 jacks. You can operate the PHYs in twisted pair mode (10BASE-T /
100BASE-TX).
Note:
For more information see section „Real-time Ethernet (RTE)
interface“ in the netX 90 Design-In Guide (ref. [2]).
netRAPID 90 | Design guide
DOC190601DG01EN | Revision 1 (Draft 10) | English | 2019-09 | Preliminary | Public
© Hilscher 2019