User's Manual
mode draws less than 1μA need to further verification), allowing products to achieve long
battery life.
For further details on the transceiver (Ember EM260), please consult data sheet at
http://www.ember.com
13.0 SIF Module Programming and Debug Interface
SIF is a synchronous serial interface developed by Cambridge Consultants Ltd. It is the primary
programming and debug interface of the CT-260. The SIF module allows external devices to
read and write memory-mapped registers in real-time without changing the functionality or
timing of the XAP2b core.
The SIF interface provides the following:
IC production test (especially analog)
PCB production test
Firmware download
Product control and characterization
The pins are:
SIF_LOADB
SIF_CLK
SIF_MOSI
SIF_MISO
The maximum serial shift speed for the SIF interface is 48MHz. SIF interface accesses can be
initiated even when the chip is in idle, deep sleep or power down modes. An edge on
nSIF_LOAD wakes the chip to allow SIF cycles.
14.0 Power Management