ZHCSTP2 November 2023 ADC34RF55
PRODUCTION DATA
The ADC provides two options (configured using SPI) to indicate if input full scale over range occurred:
| Decimation | No. of Bands | OVR Latency (incl JESD, in sampling clock cycles) |
|---|---|---|
| DDC Bypass | - | 140-144 |
| 8 | Single (real and complex), dual | 44 |
| 16 | Single (real and complex), dual | 80 |
| 32 | Single (real and complex), dual | 152 |
| 64 | Single (real and complex), dual | 296 |
| 128 | Single (real and complex), dual | 584 |
| ADDR | DATA | DESCRIPTION | ADDR | DATA | DESCRIPTION | |
|---|---|---|---|---|---|---|
| OVRA/B on GPIO1 and OVRC/DGPIO2, OVR sticky | OVR on JESD | |||||
| 0x05 | 0x02 | Select DIGITAL page | 0x05 | 0x02 | Select DIGITAL page | |
| 0x238 | 0xF0 | 0x2E | D0 | Set D0 = 1 to enable OVR on JESD | ||
| 0x383 | 0x02 | Enables OVR on GPIO pins | 0x05 | 0x00 | ||
| Clear OVR | These extra writes are only needed using decimation | |||||
| 0x05 | 0x40 | Select ANALOG page | 0x05 | 0x18 | Select DDCAB & DDCCD page | |
| 0x74 | 0x04 | Clear OVR flag chA/B | 0x20 | 0x06 | Enable OVR on JESD | |
| 0x74 | 0x00 | |||||
| 0x84 | 0x04 | Clear OVR flag chC/D | ||||
| 0x84 | 0x00 | |||||
| Change OVR from sticky to non sticky (self clear) | ||||||
| 0x05 | 0x40 | Select ANALOG page | ||||
| 0x31 | 0x06 | Set OVR to non-sticky | ||||