Epson S1C17624 Technical Manual page 149

13 16-BiT PWM TiMeRS (T16a2)
One-shot mode (TRMD = 1)
Setting TRMD to 1 sets the corresponding counter to one-shot mode.
In this mode, the counter stops automatically as soon as the counter is reset or it overflows. The counter should
be set to this mode to set a specific wait time or for pulse width measurement.
The counter is not cleared to 0 after the count operation is completed in one-shot mode. The counter must be
reset to clear its value to 0. For more information on resetting methods, see Section 13.5.1, "Counter Reset."
13.4.3 normal Channel Mode and Multi-Comparator/Capture Mode
One channel of the T16A2 module basically consists of a counter block and a comparator/capture block. The
T16A2 module also allows the application to use expanded comparator/capture function by connecting two or more
comparator/capture blocks to one counter block. To support this expansion, two operating modes are provided:
normal channel mode and multi-comparator/capture mode. This operating mode can be selected using MULTIMD/
T16A_CLK0 register.
normal channel mode (MulTiMD = 0, default)
Set the T16A2 module to this mode when using it as two channels of different timers by connecting a counter
block with the comparator/capture block of the same channel. In this mode, the counters can use different count
clocks. Each timer channel provides CCABCNT[1:0]/T16A_CTLx register to select a counter channel to be
connected to the comparator/capture block.
When using the T16A2 module in normal channel mode, be sure to connect the counter block to the compara-
tor/capture block in the same channel.
IOSC
Clock controller Ch.0
OSC3
OSC1
EXCL5
IOSC
Clock controller Ch.1
OSC3
OSC1
EXCL6
note: Do not connect a counter block to a comparator/capture block in a different channel in normal
channel mode (MULTIMD = 0), as normal operation cannot be guaranteed.
Multi-comparator/capture mode (MulTiMD = 1)
In order to set three or more comparison values for one counter or to capture the contents of one counter using
three or more trigger signals, two or more comparator/capture blocks can be connected to one counter. Multi-
comparator/capture mode is provided for this purpose. In this mode, any counter block can be combined with
the comparator/capture blocks using CCABCNT[1:0] described above. Note, however, that the count clock is
fixed at one type for counter Ch.0, regardless of the counter to be used. The clock settings for other channel are
ineffective.
IOSC
Clock controller Ch.0
OSC3
OSC1
EXCL5
IOSC
Clock controller Ch.1
OSC3
OSC1
EXCL6
Figure 13.
13-6
Table 13. 4.3.1 Counter Selection
CCaBCnT[1:0]
0x3, 0x2
0x1
0x0
Counter block Ch.0
Counter block Ch.1
Figure 13. 4.3.1 Timer Configuration in Normal Channel Mode
Counter block Ch.0
Counter block Ch.1
4.3.2 Timer Configuration in Multi-Comparator/Capture Mode
Seiko epson Corporation
Counter channel
Reserved
Ch.1 (Counter 1)
Ch.0 (Counter 0)
(Default: 0x0)
T16A2
Comparator/capture block Ch.0
Comparator/capture block Ch.1
T16A2
Comparator/capture block Ch.0
Comparator/capture block Ch.1
S1C17624/604/622/602/621 TeChniCal Manual
TOUTA5/TOUTB5
CAPA5/CAPB5
Interrupt request
TOUTA6/TOUTB6
CAPA6/CAPB6
Interrupt request
TOUTA5/TOUTB5
CAPA5/CAPB5
Interrupt request
TOUTA6/TOUTB6
CAPA6/CAPB6
Interrupt request