JAJSF42B April 2018 – June 2019 DLPC3478
The DLPC3478 requires an external reference clock to feed its internal PLL. A crystal or oscillator can supply this reference. For flexibility, the DLPC3478 accepts either of two reference clock frequencies (see Table 13), but both must have a maximum frequency variation of ±200 ppm (including aging, temperature, and trim component variation). When a crystal is used, several discrete components are also required as shown in Figure 37.