.. | .. |
---|
3 | 3 | Contact: arnaud.pouliquen@st.com |
---|
4 | 4 | Description: |
---|
5 | 5 | For audio purpose only. |
---|
| 6 | + |
---|
6 | 7 | Used by audio driver to set/get the spi input frequency. |
---|
| 8 | + |
---|
7 | 9 | This is mandatory if DFSDM is slave on SPI bus, to |
---|
8 | 10 | provide information on the SPI clock frequency during runtime |
---|
9 | 11 | Notice that the SPI frequency should be a multiple of sample |
---|
10 | 12 | frequency to ensure the precision. |
---|
11 | | - if DFSDM input is SPI master |
---|
| 13 | + |
---|
| 14 | + if DFSDM input is SPI master: |
---|
| 15 | + |
---|
12 | 16 | Reading SPI clkout frequency, |
---|
13 | 17 | error on writing |
---|
| 18 | + |
---|
14 | 19 | If DFSDM input is SPI Slave: |
---|
| 20 | + |
---|
15 | 21 | Reading returns value previously set. |
---|
16 | | - Writing value before starting conversions. |
---|
| 22 | + Writing value before starting conversions. |
---|