ZHCSIL6E June 2017 – March 2019 66AK2G12
PRODUCTION DATA.
The internal oscillator may be bypassed by connecting to an LVCMOS clock source as shown in Figure 5-19. The AUDOSC_IN pin is connected to the LVCMOS-Compatible clock source. The AUDOSC_OUT pin is left unconnected. The VSS_OSC_SYS pin is connected to board ground (VSS).
Figure 5-19 LVCMOS-Compatible Clock Input Table 5-20 details the AUDOSC_IN input clock timing requirements.
| NAME | DESCRIPTION | MIN | TYP | MAX | UNIT | ||
|---|---|---|---|---|---|---|---|
| CK0 | fc(AUDOSC_IN) | Frequency, AUDOSC_IN | 11.2896 – 49.152 | MHz | |||
| CK1 | tw(AUDOSC_IN) | Pulse duration, AUDOSC_IN low or high |
1/(2.22 x fc(AUDOSC_IN)) |
1/(1.82 x fc(AUDOSC_IN)) | ns | ||
| tj(AUDOSC_IN) | Period jitter(1), AUDOSC_IN | 100 | ps | ||||
| tR(AUDOSC_IN) | Rise time, AUDOSC_IN | 5 | ns | ||||
| tF(AUDOSC_IN) | Fall time, AUDOSC_IN | 5 | ns | ||||
| fa(AUDOSC_IN) | Frequency accuracy(1), AUDOSC_IN | 100 | ppm | ||||
Figure 5-20 AUDOSC_IN Input Clock