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Chapter 10
10.5 Control Registers
(1)
Address: TAA0CTL0 FFFFF590H, TAA1CTL0 FFFFF5A0H,
Symbol
TAAnCTL0
Note
314
TAAnCTL0 - TAA control register 0
TAAn control register 0 is an 8-bit register that controls the operation of
timer AA.
This register can be read and written in 8-bit or 1-bit units.
RESET input clears this register to 00H.
The TAAnCTL0 register is prohibited from writing during operation
(TAAnCE=1). However, the TAAnCE bit can be rewritten.
TAA2CTL0 FFFFF5B0H, TAA3CTL0 FFFFF5C0H,
TAA4CTL0 FFFFF5D0H
7
6
5
TAAn
0
0
CE
TAAnCE
Disable internal operating clock operation (TAAn is asynchronously
0
reseted)
1
Enable internal operating clock operation
Internal operating clock control and TAAn asynchronous reset are performed with the
TAAnCE bit. When TAAnCE bit is cleared to 0, the internal operating clock of TAAn
stops (fixed to low level) and TAAn is reset asynchronously.
When the TAAnCE bit is set to 1, the internal operating clock is enabled within 2 input
clocks, and TAAn counts up.
In the following modes TAAnCTL0.TAAnCE cannot be set to "1":
• Slave timer in synchroneous operation mode
If the timer is operated as the slave timer in synchroneous operation mode,
i.e. TAAnCTL1.TAAnSYE = 1.
• Slave timer in 32-bit cascaded capture mode
If timer TAAn is operated in 32-bit capture mode for capturing the upper
16 bit, i.e. TAAnOPT1.TAAnCSE = 1 (n = 1, 3).
User's Manual U18743EE1V2UM00
16-Bit Timer/Event Counter AA
4
3
2
TAAn
0
0
CKS2
Timer AAn operation control
1
0
R/W
TAAn
TAAn
R/W 00H
CKS1
CKS0
After
reset
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