Table 9-3 Inverter (Inv) Bit Operation - Motorola DSP56309 User Manual

Triple Timer Module
Triple Timer Module Programming Model
The inverter bit operation is described below in Table 9-3.
TIO Programmed as Input
Mode
INV = 0
GPIO signal on
0
the TIO signal
read directly
1 Counter is
incremented on
the rising edge of
the signal from
the TIO signal
2 Counter is
incremented on
the rising edge of
the signal from
the TIO signal
3 Counter is
incremented on
the rising edge of
the signal from
the TIO signal
Width of the high
4
input pulse is
measured
5 Period is
measured
between the
rising edges of
the input signal
6 Event is captured
on the rising edge
of the signal from
the TIO signal
9-12

Table 9-3 Inverter (INV) Bit Operation

INV = 1
GPIO signal on
the TIO signal
inverted
Counter is
incremented on
the falling edge
of the signal from
the TIO signal
Counter is
incremented on
the falling edge
of the signal from
the TIO signal
Counter is
incremented on
the falling edge
of the signal from
the TIO signal
Width of the low
input pulse is
measured
Period is
measured
between the
falling edges of
the input signal
Event is captured
on the falling
edge of the signal
from the TIO
signal
DSP56309UM/D
TIO Programmed as Output
INV = 0
Bit written to Bit written to GPIO
GPIO put on TIO inverted and
signal directly
on TIO signal
Ñ
TCRx output put TCRx output
on TIO signal inverted and put
directly on TIO signal
Ñ
Ñ
Ñ
Ñ
INV = 1
put
Ñ
Ñ
Ñ
Ñ
Ñ
MOTOROLA