Interface MCU
Copyright © 2020 Shenzhen Goodix Technology Co., Ltd. 5
4 Interface MCU
The board integrates an Atmel interface MCU, which can be converted to a J-Link port and a CDC virtual serial
port.
4.1 J-Link Port
The GR5515 SK Board integrates a J-Link OB chip, which allows you to perform online debugging and emulation
with the J-Link driver of the PC.
4.2 CDC Virtual Serial Port
J-Link OB chip internally integrates CDC serial protocols, which allow you to open the J-Link CDC virtual serial port
on the PC, to debug with UART.
Table 4-1 Relationship between UART connectors and interface MCU
4.3 Software Download Port of Interface MCU
The J-Link port, J43, on the GR5515 SK Board is used for SEGGER J-Link OB firmware download for interface MCU.
Note:
GR5515 SK Boards have been factory-programmed with J-Link OB firmware. No programming is required for users.
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