Infineon XMC4300 Relax EtherCAT Kit-V1.1, Руководство пользователя

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2.6 Reset
The reset pin (PORST#) of the XMC4300 is a bi-directional pin in open drain mode. An internal pull-up resistor
keeps the PORST# pin high during normal operation. A low level at this pin will force a hardware reset. In case
of a MCU internal reset the PORST# pin will drive a low signal.
A reset signal can be issued by
•
the on-board Reset Button (SW102, “RESET”)
• the on-board debug probe (IC101.46)
• the external debugger connected to the 10-pin Cortex
®
debug probe connector (X102
• the Arduino Power Header (RESET)
• the mikroBUS
™
socket (RST)
An XMC
™
internal circuit always ensures a safe Power-on-Reset. The XMC
™
does not require any additional
external components to generate a reset signal during power-up.
2.7 CAN transceiver
The XMC4300 Relax EtherCAT
®
Kit provides a CAN interface via a D-Sub DE-9 connector. Infineon’s high speed
CAN transceiver {IFX1051LE) for industrial applications supports 3.3V I/O logic and is suitable for 12 V and 24 V
bus systems with an excellent EMC performance. The CAN bus (signals CANH, CANL) are terminated by a 120
Ohm resistor.
Table 6 CAN signals and XMC4300 pin mapping
Signal name Pin no. at D-Sub DE-9 (X400) XMC ™ Pin, XMC ™ function
CANH X400.7 -
CANL X400.2 -
CAN_TX - P2.0, CAN.N0_TXD
CAN_RX - P14.3, CAN.N0_RXDB
GND X400.3, X400.6 -
VDD5 X400.9 (needs to be connected) -
2.8 Phy-2-Phy EtherCAT
®
connection
For backplane/mid-plane oriented EtherCAT ® applications, communication can be implemented without using
isolation transformers. Instead, low-cost ceramic capacitors can be used. The PCB layout of the XMC4300 Relax
EtherCAT
®
Kit has been prepared for EtherCAT
®
operation through direct Phy-2-Phy connection.
For this purpose two XMC4300 Relax EtherCAT ® kits are required and some modifications must be made to the
kits (see Figure 6 ). All components required for this modification can be found attached to the kit.
• Remove four 0 Ohm resistors from each XMC4300 Relax EtherCAT ® Kit
• Solder two 0 Ohm resistors onto each XMC4300 Relax EtherCAT
®
Kit
• Solder the connectors onto the XMC4300 Relax EtherCAT
®
Kits
Note: After this modification EtherCAT
®
communication through the RJ45 is disabled.
restricted - NDA required!
XMC4300 Relax EtherCAT
®
Kit
For XMC4000 family
2 Hardware description
Board User Manual 10 Rev. 1.2
2022-06-20