Fujitsu FR81S Manual Do Utilizador
CHAPTER 24: 16-BIT FREE-RUN TIMER
4. Registers
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : 16-BIT FREE-RUN TIMER
FUJITSU SEMICONDUCTOR CONFIDENTIAL
9
4.1. Registers for the Free-run Timer Simultaneous
Activation
Registers for the free-run timer simultaneous activation are explained.
The free-run simultaneous activation consists of the timer synchronous activation register and the timer
synchronous enable register.
4.1.1.
Timer Synchronous Activation Register : (TCGS)
The timer synchronous activation register (TCGS) is used for enabling simultaneous timer and controlling
simultaneous timer clear of the free-run timer. The free-run timer for enabling and clearing the simultaneous
timer can be set by the timer synchronous activation enable register (TCGSE).
TCGS: Address 1200
H
(Access: Byte, Half-word, Word)
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
Reserved
GSTOP
GSCLR
Initial value
0
0
0
0
0
0
0
0
Attribute
R0,W0
R0,W0
R0,W0
R0,W0
R0,W0
R0,W0
R0,W
R0,W
[bit7 to bit2] Reserved
Always write 0 to these bits.
[bit1] GSTOP: Simultaneous timer enable bit
GSTOP
Function
Read
Write
0
0 is always read out.
Enable the counting simultaneously.
(Start the counting)
1
Disable the counting simultaneously.
(Stop the counting)
⋅
This bit is used to simultaneously start/stop the counting of the free-run timer specified by the timer
synchronous activation enable register (TCGSE).
⋅
When this bit is set to "0":
Start the counting of the 16-bit free-run timer of the free-run timer specified by the timer synchronous
activation enable register (TCGSE). At this time, the STOP bit of the timer state control register (TCCS)
of the free-run timer specified by the timer synchronous activation enable register (TCGSE) will be
cleared to "0".
⋅
When this bit is set to "1":
Stop the counting of the 16-bit free-run timer of the free-run timer specified by the timer synchronous
activation enable register (TCGSE). At this time, the STOP bit of the timer state control register (TCCS)
of the free-run timer specified by the timer synchronous activation enable register (TCGSE) will be set
to "1".
⋅
The value read out is always "0".
MB91520 Series
MN705-00010-1v0-E
916