EM260-RTR datasheet(36/50 Pages) SILICONIMAGE

36 / 50 page

EM260

120-0260-000M Rev 1.1

Page 36

The UART signals follow the usual conventions:



When idle, serial data is high (marking)



The start bit is low (spacing), and the stop bit is high (marking)



Data bits are sent least-significant bit first, with positive (non-inverting) logic



The flow control signals are asserted low

Note that commonly used EIA transceivers invert these logic levels.

Silicon Labs supplies the UART Gateway protocol software in two versions: one uses RTCS/CTS flow control and

the other uses XON/XOFF. The UART is set up as follows for these versions:



115,200 bps for the RTS/CTS version



57,600 bps for the XON/XOFF version



No parity bit



8 data bits



1 stop bit

The ASH protocol has been tuned for optimal operation with the two configurations listed here. These

configurations can be changed through manufacturing tokens, but doing so may result in a degradation of

performance. To learn how to change the configuration, contact customer support at www.silabs.com/zigbee-

support.

EM260-RTR Datasheet(PDF) 36 Page - Silicon image