DWM1001 Module Development Board Datasheet

© Decawave Ltd 2017

Subject to change without notice

Version 1.3

Page 10

5

The processor on the Module Development Board provides USB to SWD (Serial Wire Debug) conversion to allow

programming and debug of software on the DWM1001 module. Figure 11 below shows the relevant sections on

the Module Development Board.

Serial Wire Debug is a replacement for the more traditional 5-pin JTAG port. It uses a clock (SWDCLK) and a

Single bi-directional data pin (SWDIO), providing all the normal JTAG debug and test functionality. SWDIO and

SWCLK are overlaid on the TMS and TCK pins. In order to communicate with a SWD device, J-Link sends out

data on SWDIO, synchronous to the SWCLK. With every rising edge of SWCLK, one bit of data is transmitted or

received on the SWDIO. The data read from SWDIO can then be retrieved from the input buffer.

Figure 11: Module Development Board J-Link components