NEC PD78214 - Manual (Page 195)

166
µ
PD78214 Sub-Series
(4) Timer output control register (TOC)
The TOC register is an 8-bit register for controlling the active level of timer output and for enabling/disabling
timer output.
The higher 4 bits control the timer output operation (on the TO2 and TO3 pins) of 8-bit timer/counter 2. (The
lower 4 bits control the timer output operation (on the TO0 and TO1 pins) of the 16-bit timer/counter.)
The TOC register allows only write operation using an 8-bit measurement instruction. Fig. 7-70 shows the
format of the TOC register.
When the RESET signal is applied, the TOC register is cleared to 00H.
Fig. 7-70 Format of Timer Output Control Register (TOC)
7 6 5 4 3 2 1 0
ENTO3 ALV2 ENTO1 ENTO0 ALV0 TOC ALV3 ENTO2 ALV1
These bits control timer output operation (output of
pins TO0 and TO1) by the 16-bit timer/counter
(see Fig. 7-5).
Active level for TO2 pin
When toggle output
is specified
When toggle output
is specified
When PWM/PPG
output is specified
Low level
When PWM/PPG
output is specified
High level Low level
Low level
Low level
High level
High level
TO2 pin operation specification
Outputs ALV2
Enables pulse output
Active level for TO3 pin
TO3 pin operation specification
Outputs ALV3
Enables pulse output
ALV2
ALV3
0
ENTO2
ENTO3
High level
1
1
0
1
0
0
1