Cmsemicon CMS32L051 - Timer Input-Output Select Register (TIOS0)

V1.2.2
CMS32L051 User Manual |Chapter 5 Universal Timer Unit (Timer4)
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5.3.8 Timer input-output select register (TIOS0)
The TIOS0 register is used to select the input and output of unit 0. Select the timer inputs for Channel
0 and Channel 1 of Unit 0 and the timer output for Channel 2. The TIOS0 register is set via an 8-bit
memory operation command. After the reset signal is generated, the value of the TIOS0 register changes
to 00H.
Figure 5-17 Table of timer input selection register 0 (TIOS0)
Address: 0x40020474
After reset: 00H
R/W
Symbol
7 6 5 4 3 2 1 0
TIOS0
TIS07
TIS06
TIS05
Channel 0 uses the selection of timer inputs
0
0
0
The input signal of the timer input pin (TI00).
others
Settings are forbidden
TIS04
Channel 0 uses the selection of timer inputs
0
Input signal selected via TIS07~TIS05
1
The event input signal for ELC
TOS03
Enable of the timer output of channel 2
0
Enable output
1
Disable output (output fixed at 0).
TIS02
TIS01
TIS00
Channel 1 uses the selection of timer inputs
0
0
0
The input signal of the timer input pin (TI01).
0
0
1
The event input signal for ELC
0
1
0
The input signal of the timer input pin (TI01).
0
1
1
1
0
0
Low-speed internal oscillator clock (f
IL
).
1
0
1
Subsystem clock (f
SUB
).
Others
Settings are forbidden
Note 1 The high or low level width of the selected timer input needs to be greater than or equal to 1/fMCK+10ns.
Therefore, when selecting fSUB as fCLK (CSS=1 for CKC registers), TIS02 position 1 cannot be used.
2. When selecting the event input signal of ELC by timer input Register 0 (TIOS0), it must be selected by timer clock
selection register 0 (TPS0). fCLK.
TUES07
TUES06
TUES05
TUES04
TOS03
YOUWITH02
TIS01
TIS00