EM260 ZigBee/802.15.4 Network Processor - 120-0260 ... - wless.ru

EM2607 SIF Module Programming and Debug InterfaceSIF is a synchronous serial interface developed by Cambridge Consultants Ltd. It is the primary programmingand debug interface of the EM260. The SIF module allows external devices to read and write memory-mappedregisters in real-time without changing the functionality or timing of the XAP2b core. See the application notePCB Design with an EM260 (120-5047-000) for the PCB-level design details regarding the implementation of theSIF interface.The EM260 pins involved in the SIF Interface:• nSIF_LOAD• SIF_CLK• SIF_MOSI• SIF_MISO• nRESETIn addition, the VDD_PADS and Ground Net are required for external voltage translation and buffering of theSIF Signals.The SIF interface provides the following:• PCB production test interface via Virtual UART and an InSight Adapter• Programming and debug interface during EmberZNet Application DevelopmentIn order to achieve the deep sleep currents specified in Table 5, a pull-down resistor must be connected tothe SIF_MOSI pin. In addition, Ember recommends a pull-up resistor to be placed on the nSIF_LOAD pin inorder to prevent noise from coupling onto the signal. Both of these recommendations are documented withinthe EM260 Reference designs.When developing application-specific manufacturing test procedures, Ember recommends the designer referto Manufacturing Test Guidelines (120-5016-000). This document provides more detail regarding importanceof designing the proper SIF interface as well as timing of the SIF.Page 37120-0260-000J