Greetings! I am working on a project utilizing the ADS1178 and am testing the chip at a component level right now. I am having a bit of an issue generating a response from the chip at all. I have attached the chip to a 64 pin breakout board and am attempting to interface it with the following parameters
Clock divider = 0
Format = 001 (SPI TDM fixed)
Mode = 1 (Low Power)
Clock = 5.32 MHz
SClock = 665 KHz (1/8 ratio to meet timing standards as per datasheet)
My hardware configuration is based on the example schematic from the datasheet, save for the difference in format and timing. I have a single ended accelerometer (ADXL326) attached to the input of channel 1, but that is of no consequence because as of right now the chip does not generate a _DRDY pulse, nor does it respond to the SPI SCLK (I have mointored both with an O-scope and have seen no response regardless of duration of the SYNC pulse or SPI prompt). My initial thought is that maybe the core is not getting enough power (the DVDD pin). I am interfacing with an mbed uController (LPC1768) during the prototype stage if that is of any significance?