NXP Semiconductors MC56F80000-EVKUM, User Manual, Page: 22 / 26

NXP Semiconductors
MC56F80000-EVKUM
MC56F80000-EVK Board User Manual
• OpenSDA circuit — The OpenSDA microcontroller MK26FN2M0VMI18 provides a
virtual COM between the host computer and MC56F80748 through USB port (J12) by
using SCI0 on MC56F80748.
The MC56F80748 features two high-speed queued serial communication interface
(QSCI) modules (SCI0 and SCI1) with LIN slave functionality. The SCI allows
asynchronous serial communications with peripheral devices.
On MC56F80000-EVK, the signals used in asynchronous serial communication
between the OpenSDA processor and MC56F80748 are voltage translated from
P3V3_VREG_OUT to VDD and vice versa using the NTSX2102GU8H (U12) voltage
translator.
The following table describes the signal mapping between OpenSDA and target MCU
(MC56F80748) connected through SCI0 interface.
OpenSDA MC56F80748
Signal Signal
Description
OPENSDA_UART_TX GPIOC3 GPIOC3 is configured as RXD function of
SCI0.
OPENSDA_UART_RX GPIOC2 GPIOC2 is configured as TXD function of
SCI0.
Table 19. Signal mapping between OpenSDA and DSC using SCI0 interface
• CP2102N USB-to-UART bridge controller — Not populated by default. The device
provides a virtual COM interface between the host computer and MC56F80748 through
USB port (J26) by using SCI1 on MC56F80748. The CP2102N device includes a
USB 2.0 full-speed function controller, USB transceiver, oscillator, and universal
asynchronous receiver/transmitter (UART) in a small package.
Note:
The CP2102N device requires installing the virtual COM port (VCP) device drivers that
can be downloaded from https://www.silabs.com/developers/usb-to-uart-bridge-vcp-
drivers?tab=downloads . After the driver for CP2102N is installed, the host computer
will enumerate COM ports when the USB cable is plugged into the J26 USB port. This
makes the device appear as a VCP. You can use these ports to communicate with the
processor with USB interface via a standard PC serial emulation port (for example,
Putty and Tera Term).
The following figure shows the circuit diagram of CP2102N USB-to-UART device using
SCI1 interface.
MC56F80000-EVKUM All information provided in this document is subject to legal disclaimers. © 2022 NXP B.V. All rights reserved.
User manual Rev. 1 — 14 December 2022
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