SNAS740B October 2017 – January 2019 LMX2572
PRODUCTION DATA.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | RAMP_TRIG_CAL | 0 | RAMP_SCALE_COUNT | ||
R/W-0h | R/W-0h | R/W-0h | R/W-7h |
Bit | Field | Type | Reset | Description |
---|---|---|---|---|
15 - 5 | R/W | 0h | Program 0h to this field. | |
4 | RAMP_TRIG_CAL | R/W | 0h | Enabling this bit causes VCO calibration to occur in automatic ramping mode at the beginning of each ramp.
0: Disabled 1: Enabled |
3 | R/W | 0h | Program 0h to this field. | |
2 - 0 | RAMP_SCALE_COUNT | R/W | 7h | For ramping mode, RAMP_DLY_CNT and RAMP_SCALE_COUNT determine the minimum necessary time taken for VCO calibration during the ramp.
Min. VCOCal time = (1 / fsmc) / (RAMP_DLY_CNT × 2RAMP_SCALE_COUNT), where fsmc = fOSCin / 2CAL_CLK_DIV. |