[quote user="javi garcia"]
I want to use a micro to set the TRF7960, but I can not. I send commands following Table 5.31 of datasheet. Also configure the hardware properly. My micro communicates via SPI master, and a 5MHz CLK, this is how you do?
I think because no proper command sequence of data to configure the TRF.[/quote]
The SPI is not standard - you cannot just connect via SPI and read/write the TRF chip without following the special requirements. See section 5.12 in the Data Sheet and the SLOA document on SPI usage/errata for the TRF7960 (see: http://www.ti.com/lit/an/sloa140/sloa140.pdf). We're using the TRF7960A with a Freescale part (56F8037) using SPI and customizing the send/receive routines to adhere to the TRF SPI rules. The MSP430 firmware will show what has to be done with SPI but for me that was a little bit harder to follow compared to the documents. If you cannot directly control SPI CLK (i.e. it has to be muxed with a micro GPIO) I think you may not be able to use SPI with SS mode. We are switching to parallel mode because of the SPI limitations. We did not experiment with non-SS mode since we have the I/O to run parallel.
Bill A