Reset; Can Transceiver; Phy-2-Phy Ethercat® Connection - Infineon XMC4800 IoT Amazon FreeRTOS Connectivity kit Manual

XMC4800 IoT Amazon FreeRTOS Connectivity kit WiFi with EtherCAT® Kit
For XMC4000 family
Hardware description
Pin No. Signal name
5 GND
6 SWV
7 Key
8 NC
9 GND_Detect
10

RESET

2.6 Reset
The reset pin (PORST#) of the XMC4800 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.
the on-board Reset Button (SW102, "RESET")
A reset signal can be issued by
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 XMC4800 IoT Amazon FreeRTOS Connectivity kit with EtherCAT® 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 XMC4800 pin mapping
Signal
name
Pin no. at D-Sub DE-9 (X400)
CANH X400.7
CANL X400.2
CAN_TX -
CAN_RX -
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 XMC4800 IoT Amazon
FreeRTOS Connectivity kit with EtherCAT® has been prepared for EtherCAT® operation through direct Phy-2-Phy
connection.
For this purpose two XMC4800 IoT Amazon FreeRTOS Connectivity kit with EtherCAT® 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.
User Manual
Description
Ground
Serial Wire Viewer (Trace Data Out)
Key
Not connected
Ground detect
Rest (active low)
XMC Pin, XMC function
-
-
P2.0, CAN.N0_TXD
P14.3, CAN.N0_RXDB
-
-
9 R1.0
2016-04-15