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The CON6601 is for CMSIS‐DAP USB communication, mass storage and a serial port. The
user interface for embedded devices. The mass storage is for flashing the LinkIt 2523 using the SWD interface. The user
can drag and drop the LinkIt 2523 binary file and the FreeRTOS binary file to the mass storage device to flash LinkIt 2523
image directly. The serial port also supports UART2 connectivity on the LinkIt 2523 HDK.
The maximum charging current is 1.5A at 5V DC for the LinkIt 2523 HDK's internal charger. The USB power source is
passing through the connector CON6401 on the HDK.
4.13. GNSS (LinkIt 2523G only)
The LinkIt 2523G HDK is equipped with GNSS chip with a built‐in multiband onboard antenna with an operating range of
1.5GHz‐2.4GHz. Switch the jumper J5003 to receive Bluetooth, Bluetooth Low Energy and GNSS signal by an onboard
antenna or SMA connector.
LinkIt 2523G HDK supports GPS, GLONASS, BeiDou, Galileo, QZSS and SBAS standard, with optimized power
consumption and extended battery life. Onboard antenna and SMA connector path switch are described in see
section 4.14, "Bluetooth and Bluetooth Low Energy".
4.14. Bluetooth and Bluetooth Low Energy
The LinkIt 2523 HDK supports Bluetooth 4.2 for Bluetooth core specification updates for an improved speed and reliable
data transfer. The transfer speed is up to 2.5 times faster and the protocol stack size is smaller. Bluetooth
4.2 also consumes less power. It is backward compatible with Bluetooth 4.0 and 4.1, and it also adopts Bluetooth core
versions starting from 1.1 with Bluetooth BR/EDR.
There are three options to power up the HDK with Bluetooth, Bluetooth Low Energy and external buck power supply. The
data transfer is through the onboard antenna or an external antenna with an SMA connector. Car‐kit connector CON5001
is used to measure the received Bluetooth and GPS signal strength by an external cable connected to the HDK. If the
car‐kit is connected, it will use the Bluetooth signal from the external cable not the signal provided by an onboard
antenna.
The SMA connector SMA5002 could be connected with external antenna cable for Bluetooth and Bluetooth
Low Energy signal strength validation. Some of the jumpers are designed to switch between the RF signal and Bluetooth
mode. Details on switching modes are presented in Table 15.
This document contains information that is proprietary to MediaTek Inc. ("MediaTek") and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.
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LinkIt 2523 HDK User's Manual
© 2015 - 2016 MediaTek Inc.
CMSIS‐DAP
is the debugging
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