Guppy PRO Technical Manual
V4.1.2
79
To enable the PWM feature select output mode 0x09. Control the signal state
via the PulseWidth and Period fields (all times in microseconds (µs)).
PWM: minimum and maximum periods and frequencies
In the following formulas you find the minimum and maximum periods and
frequencies for the pulse-width modulation (PWM).
0xF1000808 IO_OUTP_PWM2 Same as
IO_OUTP_PWM1
0xF100080C
0xF1000810 IO_OUTP_PWM3 Same as
IO_OUTP_PWM1
0xF1000814
0xF1000818 IO_OUTP_PWM4 Same as
IO_OUTP_PWM1
0xF100081C
Figure 31: PulseWidth and Period definition
Note
Note the following conditions:
•
PulseWidth
Period
•
Period
MinPeriod
Formula 1: Minimum and maximum period and frequency
Register
Name
Field
Bit
Description
Table 31: PWM configuration registers (continued)
PulseWidth
Period
period
min
3 μs
=
frequency
max
1
period
min
------------------------
1
3 μs
---------
333.33 kHz
=
=
=
frequency
min
1
2
16
6
–
10
s
---------------------------
15.26 Hz
=
=
period
max
1
frequency
min
--------------------------------
2
16
μs
=
=
