NEC PD754244 Network Card User Manual


 
CHAPTER 6 PERIPHERAL HARDWARE FUNCTION
136 Users Manual U10676EJ3V0UM
Figure 6-31. Setting of Timer Counter Mode Register (2/3)
(b) Timer counter (channel 1)
765432
10
TM10TM11TM13 TM12TM14TM15TM16
Address
TM1
FA8H
Symbol
TM13
Clears counter and IRQT1 flag when "1" is written. Starts count operation
if bit 2 is set to "1".
Timer start command bit
Operation mode
TM12
0
1
Stops (count value retained)
Count operation
Count operation
Count pulse (CP) select bit
TM16
Count pulse (CP)
TM15
0
Overflow of timer counter (channel 2)
1
f
X
/2
5
10
01
1
f
X
/2
10
0
f
X
/2
8
f
X
/2
12
TM14
0
1
0
1
110
f
X
/2
6
111
Operation mode select bit
TM11
0 8-bit timer counter mode
ModeTM10
0
Setting prohibited
Other