Semtech 2006
www.semtech.com
7-1
XE8806A/XE8807A
7. Clock Generation
7.
Clock generation ............................................................................................................................. 7-1
7.1
Features .......................................................................................................................................... 7-2
7.2
Overview ......................................................................................................................................... 7-2
7.3
Register map................................................................................................................................... 7-2
7.4
Interrupts and events map............................................................................................................... 7-3
7.5
Clock sources.................................................................................................................................. 7-5
7.6
RC oscillator.................................................................................................................................... 7-5
7.6.1
Configuration................................................................................................................................... 7-5
7.6.2
RC oscillator frequency tuning......................................................................................................... 7-5
7.6.3
RC oscillator specifications ............................................................................................................. 7-6
7.7
Xtal oscillator................................................................................................................................... 7-7
7.7.1
Xtal configuration ............................................................................................................................ 7-7
7.7.2
Xtal oscillator specifications............................................................................................................. 7-7
7.8
External clock.................................................................................................................................. 7-8
7.8.1
External clock configuration ............................................................................................................ 7-8
7.8.2
External clock specification ............................................................................................................. 7-8
7.9
Clock source selection .................................................................................................................... 7-8
7.10
Prescalers ....................................................................................................................................... 7-9
7.11
32 kHz frequency selector ............................................................................................................. 7-10