TS8000x Programming Guide www.semtech.com 6 of 16
Rev 0.9 Sep 2016 Semtech
Hardware Preparation
The Semtech USB to I2C adapter board is included as part of the TSWITX-G4-EVM, along with its
connector cable. Visit Semtech.com for the part number of the latest version of the EVM kit. EVM kits can
be found at: http://semtech.com/ wireless-charging.
Three wires are required between the adapter board and the board to be programmed:
- SDA
- SCL
- GND
A fourth, optional, interface line, Vcc, provides power from the adapter to the target board and is included
in the interface cable. If the target board is not provided power separately, this line provides a convenient
power solution. If the target board is being separately powered, this line should not be used, to avoid
possible conflicts between the power supplies.
USB cable
to PC
4 : GND
3 : SCK
2 : SDA
1 : Vcc
Adapter Board Target Board
4 3 2 1
20 : GND
4 : SCL
3 : SDA
1 : Vcc
The cable for the adapter board is designed to plug directly into a 4 pin interface on the board containing
the TS8000x device. Ideally, the target board should have pinouts in the configuration as per the diagram
above. If the target board does not have this particular interface available, you will need to craft an
interface cable from the USB to I2C adapter board to the points on your board that match those identified
above.
Lastly, to invoke bootloader mode, the DEBUG line on the TS8000x must be grounded prior to application
of power to cause the processor to enter bootloader mode on powerup.
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