Hi,
We use the C2000 DSP for the processor, and we use the external DAC for the data converter to display boards, it is used for the product electronics quick check;
We choos the DAC088S085 and there are 3pcs for the 11channels;
Because we have no more than 3channel SPI module, please advise how to design the SPI daisy chain design for DAC088S085, thanks.
Hi,
To support multiple devices in a daisy chain configuration, SCLK and SYNC are shared across all DAC088S085s and DOUT of the first DAC in the chain is connected to DIN of the second. Below figure hows three DAC088S085s connected in daisy chain fashion. Similar to a single-channel write sequence, the conversion for a daisy chain operation begins on a falling edge of SYNC and ends on a rising edge of SYNC. A valid write sequence for n devices in a chain requires n times 16 falling edges to shift the entire input data stream through the chain. Daisy chain operation is specified for a maximum SCLK speed of 30 MHz.
Regards,
AK
