Table 2.3.5 Timer Control Register W3; Table 2.3.6 Timer Control Register W4 - Renesas 4513 User Manual

(5) Timer control register W3
The timer 3 count source selection bits are assigned to bits 0 and 1, the timer 3 count start synchronous
circuit control bit is assigned to bit 2 and the timer 3 control bit is assigned to bit 3.
Set the contents of this register through register A with the TW3A instruction. The TAW3 instruction
can be used to transfer the contents of register W3 to register A.
Table 2.3.5 shows the timer control register W3.

Table 2.3.5 Timer control register W3

Timer control register W3
W3
3 Timer 3 control bit
Timer 3 count start synchronous
W3
2
circuit control bit
W3
1
Timer 3 count source selection
bits
W3
0
Note: "R" represents read enabled, and "W" represents write enabled.
(6) Timer control register W4
The timer 4 count source selection bits are assigned to bits 0 and 1, and the timer 4 control bit is
assigned to bit 3.
Set the contents of this register through register A with the TW4A instruction. The TAW4 instruction
can be used to transfer the contents of register W4 to register A.
Table 2.3.6 shows the timer control register W4.

Table 2.3.6 Timer control register W4

Timer control register W4
W4
Timer 4 control bit
3
W4
2 Not used
W4
1
Timer 4 count source selection
bits
W4
0
Note: "R" represents read enabled, and "W" represents write enabled.
at reset : 0000
2
Stop (state retained)
0
Operating
1
Count start synchronous circuit not selected
0
Count start synchronous circuit selected
1
W3 W3
1 0
0 0 Timer 2 underflow signal
0 1 Prescaler output
1 0
Not available
1 1
Not available
at reset : 0000
2
Stop (state retained)
0
Operating
1
0
This bit has no function, but read/write is enabled.
1
W4 W4
1 0
0 0 Timer 3 underflow signal
0 1 Prescaler output
1 0
CNTR1 input
1 1
Not available
4513/4514 Group User's Manual
APPLICATION
at RAM back-up : state retained
Count source
at RAM back-up : state retained
Count source
2.3 Timers
R/W
R/W
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