Title:
CLOCK CALIBRATION
Document Type and Number:
WIPO Patent Application WO/2019/138102
Kind Code:
A1
Abstract:
A circuit system comprisesa processor (9), a first clock (4) with a first frequency, a second clock (6) with a second frequency, such second frequency being higher than said first frequency and a clock calibration module (8). The clock calibration module (8) comprises a plurality of counters (10a-d) configured to count cycles of the second clock (6) when triggered. Each of the plurality of counters (10a-d) is configured to be triggered at successive cycles of the first clock (4). Each of the plurality of counters (10a-d) is configured, after a predetermined number of cycles of the first clock (4), to output a count of elapsed second clock cycles and the processor (9) is configured to determine, using the counts outputted by the plurality of counters (10a-d), a ratio between the first frequency and the second frequency.
Inventors:
MERIÖ VILLE (NO)
Application Number:
PCT/EP2019/050778
Publication Date:
July 18, 2019
Filing Date:
January 14, 2019
Export Citation:
Assignee:
NORDIC SEMICONDUCTOR ASA (NO)
International Classes:
G06F1/12; G06F1/324; H04W52/02
Foreign References:
| EP2089970A1 | 2009-08-19 | |||
| US20030043766A1 | 2003-03-06 | |||
| US20150074444A1 | 2015-03-12 | |||
| US20120294212A1 | 2012-11-22 | |||
| US6725067B1 | 2004-04-20 |
Attorney, Agent or Firm:
DEHNS (GB)
Download PDF: