Fujitsu F2MCTM-16LX Hardware Manual page 262

CHAPTER 14 16-BIT RELOAD TIMER
Table 14.3-2 Functions of Timer Control Status Registers (High) (TMCSR: H)
bit15
to
bit12
bit11
bit10
bit9
to
bit7
246
Bit name
Undefined bits Read: The value is undefined.
Write: No effect
CSL1, CSL0: These bits select the count clock of the 16-bit reload timer.
Count clock select bits When set to anything other than "11
When set to "11
MOD2, MOD1, MOD0: These bits set the operation conditions of the 16-bit reload timer.
Operating mode select
bits The MOD2 bit is used to select the function of the input pin.
When MOD2 bit set to 0:
When MOD2 set to 1:
[Event count mode]
The MOD2 bit is not used. An external event clock is inputted from the input
pin. The MOD1 and MOD0 bits are used to select the edge to be detected.
": The edge of the external event clock is counted (event
B
count mode).
[Internal clock mode]
The input pin functions as a trigger input.
The MOD1 and MOD0 bits are used to select the edge to be detected.
When the edge is detected, the value set in the 16-bit reload register
(TMRLR) is reloaded in the 16-bit timer register (TMR), starting the count
operation of the TMR.
The input pin functions as a gate input.
The MOD1 bit is not used. The MOD0 bit is used to select the signal level
(High or Low) to be detected. The count operation of the 16-bit timer
register (TMR) is performed only when the signal level is inputted.
Function
": These bit is counted by internal
B
clock (internal clock mode).