Texas Instruments CC112 Series, User Manual, Page: 59 / 109

CC112X/CC1175
SWRU295C Page 59 of 108
WOR_CFG1.EVENT1
WOR_EVENT1 t
Event1
[µs] (f
RCOSC
= 32 kHz)
000 4 125
001 6 187.5
010 8 250
011 12 375
100 16 500
101 24 750
110 32 1000
111 48 1500
Table 26: Event 1
Equation 21 gives the Event 1 timeout.
1 _
1
1
EVENT WOR
f
t
RCOSC
Event
Equation 21: t
Event1
An
SRX
strobe is issued on Event 1 if t
Event1
is larger than the crystal start-up time. If t
Event1
is shorter
than the crystal start-up time (
CHIP_RDYn
not asserted when Event 1 occurs), the
SRX
strobe will be
issued as soon as
CHIP_RDYn
is asserted.
Event 2 can used to autonomously take the system out of SLEEP at regular intervals to perform RC
oscillator calibration. This will improve the accuracy of the timer.
The Event 2 timing is programmed with an exponent value decoded by the
WOR_CFG0.EVENT2_CFG
setting.
WOR_CFG0.EVENT2_CFG
WOR_EVENT2 t
Event2
[s] (f
RCOSC
= 32 kHz)
00 Disabled
01 15 ~1
10 18 ~8.2
11 21 ~65.5
Table 27: WOR_EVENT2
t
Event2
is given by Equation 22.
RCOSC
EVENT WOR
Event
f
t
2 _
2
2
Equation 22: t
Event2
All three events
16
can be monitored on the GPIO pins by setting
IOCFGx.GPIOx_CFG =
WOR_EVENT0/1/2 (54/55/56).
16
If
IOCFGx.GPIOx_CFG = WOR_EVENT2
(56),
WOR_CFG0.EVENT2_CFG
must be ≠ 00b