Hi,
I´m designing a schematic to the DSP tms320c6745 (PTP format) and for that reason, I´ve been looking the EVMOMAPL137 schematics.
I want to connect the ADS1274 (SPI format) with the DSP (I have looked the ADS1274EVM schematics too) and I have some questions.
I think that the SPIx_SOMI pin is connected with the exit of the D type flip-flop (Format 000) and the SPIx_CLK pin is connected with the SCLK input (Figure 88. ADS1274 datasheet). The CLK input is connected with and oscillator of 27MHz with a fSCLK/fCLK ratio of 1, 1/2, 1/4, 1/8, etc. But I don’t know where connect the DRDYn output. The DSP has a pin called SPIx_ENAn that works as an input, when the DSP works in master mode. Could I connect the DRDYn output of the ADC to this pin or I should connect it to a GPIO pin instead?
Other question. I have the ADS1274EVM, if I get the EVM OMAP L137, I could connect both through a 5-6K interface or something similar? It would be for testing purposes.
Thank you very much.
