NEC PD754144 - Manual (Page 161)

CHAPTER 6 PERIPHERAL HARDWARE FUNCTION
161 User’s Manual U10676EJ3V0UM
Figure 6-44. Setting of Timer Counter Mode Register (n = 1, 2)
TM20 TM21 TM23 TM22 TM24 TM25 TM26 – TM2 F90H
TMn3
Clears counter and IRQTn flag when "1" is written. Starts count operation
if bit 2 is set to "1".
Timer start command bit
Operation mode
TMn2
0
1
Stops (count value retained)
Count operation
Count operation
Count pulse (CP) select bit
TMn6 TM1 TMn5
0 Carrier clock input 1
f X /2 5 1 0
0 1
1 f X /2 10 0
f
X
/2 8
f X /2 12
TMn4
0
1
0
1
1 1 0
f X /2 6 1 1 1
Operation mode select bit
TM21
1 Carrier generator mode
Mode TM20
1
7 6 5 4 3 2 1 0
TM10 TM11 TM13 TM12 TM14 TM15 TM16 –
Address
TM1 FA8H
Symbol
TM2
f X /2
f X
f X /2 8
f
X
/2 6
f X /2 10
f X /2 4
TM11
0
TM10
0
Setting prohibited Other
Remark n = 1, 2