User manual

Real-Time Clock Registers

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Table 14-2. CTL Register Field Descriptions (continued)

Bit Field Type Reset Description

2 RTC_4KHZ_EN R/W X

RTC_4KHZ is a 4 KHz reference output, tapped from

SUBSEC:VALUE bit 19 which is used by AUX timer. 0: RTC_4KHZ

signal is forced to 0 1: RTC_4KHZ is enabled ( provied that RTC is

enabled EN)

1 RTC_UPD_EN R/W X

RTC_UPD is a 16 KHz signal used to sync up the radio timer. The

16 Khz is SCLK_LF divided by 2 0: RTC_UPD signal is forced to 0

1: RTC_UPD signal is toggling @16 kHz

0 EN R/W X

Enable RTC counter 0: Halted (frozen) 1: Running

1130

Real-Time Clock SWCU117A–February 2015–Revised March 2015

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