Datasheet
Device
32KXOUT
OR
HFCLKIN
32KCLKOUT
HFCLKOUT
32KXIN
OR
OR
32kHz
030-002
TPS65930/TPS65920
www.ti.com
SWCS037G–MAY 2008–REVISED APRIL 2011
11 Clock Specifications
The TPS65920/TPS65930 device includes several I/O clock pins. The TPS65920/TPS65930 device has
two sources of high-stability clock signals: the external high-frequency clock (HFCLKIN) input and an
onboard 32-kHz oscillator (an external 32-kHz signal can be provided). Figure 11-1 is the clock overview.
Figure 11-1. Clock Overview
11.1 Clock Features
The TPS65920/TPS65930 device accepts two sources of high-stability clock signals:
• 32KXIN/32KXOUT: Onboard 32-kHz crystal oscillator (an external 32-kHz input clock can be provided)
• HFCLKIN: External high-frequency clock (19.2, 26, or 38.4 MHz).
The TPS65920/TPS65930 device can provide:
• 32KCLKOUT digital output clock
• HFCLKOUT digital output clock with the same frequency as the HFCLKIN input clock
Copyright © 2008–2011, Texas Instruments Incorporated Clock Specifications 83
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