I am trying to get the ADS1293 setup and initialized on my board. I am using an external clock generator @ 409.6kHz instead of the oscillator. I am trying to get a ODR of 267Hz.
I am setting registers:
0x12 (OSC_CN) = 0x06
0x13 (AFE_RES) = 0x1B // sets clock frequency for channel 1 and 2 to 204800Hz and High-resolution mode
0x21 (R2_RATE) = 0x4 // set R2 decimation rate to 6
0x22 (R3_RATE_CH1) = 0x20 // sets R3 CH1 decimation rate to 32
0x23 (R#_RATE_CH2) = 0x20 // sets R3 CH1 decimation rate to 32
0x25 (R1_RATE) = 0x00 // sets Pace data rate to 4
Based on table 10 of the datasheet this should give me ODR = 267Hz but instead it is giving me 133Hz. It is being cut in half.
If I set registers 0x22 and 0x23 to decimation of 16 I then get my desired 267Hz. Is table 10 in the datasheet incorrect? Is there a revised datasheet?
Regards,
Luis
