Functional Description - Silicon Laboratories EFR32xG14 Wireless Gecko Reference Manual

13.3 Functional Description

The RTCC is a 32-bit up-counter with three Capture/Compare channels. In addition, the RTCC includes a 15-bit pre-counter which can
be used as an independent counter or to prescale the main counter. An overview of the RTCC module is shown in
Overview on page 377.
CC2
PRS output
CC1
CC0
Oscillator failure
OSCFAIL
CNT Overflow
OF
Interrupt
CC2
generation
CC1
CC0
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RTCC_CTRL_COMP1TOP
CC1 compare match
Clear
Counter
RTCC_CNT /
RTCC_TIME, RTCC_DATE
Figure 13.1. RTCC Overview
RTCC - Real Time Counter and Calendar
Clear
Pre-Counter
RTCC_PRECNT
[31:0] [16:0] [14:0]
CNT PRECNT
Capture/Compare
=
Mask
RTCC_CCx_CCV
RTCC_CC_CTRL_COMPMASK
RTCC_CC2_CCV output to FRC
Figure 13.1 RTCC
RTCC_CTRL_CNTTICK = CCV0MATCH
RTCC_PRECNT = RTCC_CC0_CCV[14:0]
LFCLK
RTCC
RTCC_CC_CTRL_COMPBASE
Capture
Capture
logic n
Capture / Compare Channel n
n = {0, 1, 2}
Reference Manual
PRS
Inputs
Rev. 1.1 | 377