s908gz60cfa Freescale Semiconductor, Inc, s908gz60cfa Datasheet - Page 295

• Manufacturer Part Number: s908gz60cfa
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

MSxB — Mode Select Bit B
MSxA — Mode Select Bit A
Freescale Semiconductor
This read/write bit selects buffered output compare/PWM operation. MSxB exists only in the TIM2
channel 0, TIM2 channel 2, and TIM2 channel 4 status and control registers.
Setting MS0B disables the channel 1 status and control register and reverts T2CH1 pin to
general-purpose I/O.
Setting MS2B disables the channel 3 status and control register and reverts T2CH3 pin to
general-purpose I/O.
Setting MS4B disables the channel 5 status and control register and reverts T2CH5 pin to
general-purpose I/O.
Reset clears the MSxB bit.
When ELSxB:ELSxA ≠ 00, this read/write bit selects either input capture operation or unbuffered
output compare/PWM operation. (See
When ELSxB:ELSxA = 00, this read/write bit selects the initial output level of the T2CHx pin once
PWM, input capture, or output compare operation is enabled. (See
bit.
1 = Buffered output compare/PWM operation enabled
0 = Buffered output compare/PWM operation disabled
1 = Unbuffered output compare/PWM operation
0 = Input capture operation
1 = Initial output level low
0 = Initial output level high
MSxB
X
X
0
0
0
0
0
0
0
1
1
1
Before changing a channel function by writing to the MSxB or MSxA bit, set
the TSTOP and TRST bits in the TIM2 status and control register (T2SC).
MSxA
X
X
X
MC68HC908GZ60 • MC68HC908GZ48 • MC68HC908GZ32 Data Sheet, Rev. 6
0
1
0
0
0
1
1
1
1
ELSxB
0
0
0
1
1
0
0
1
1
0
1
1
Table 19-2. Mode, Edge, and Level Selection
ELSxA
0
0
1
0
1
0
1
0
1
1
0
1
Table
Output compare
buffered PWM
Output preset
Input capture
compare or
Buffered
or PWM
output
Mode
19-2.)
NOTE
Pin under port control; initial output level high
Pin under port control; initial output level low
Capture on rising edge only
Capture on falling edge only
Capture on rising or falling edge
Software compare only
Toggle output on compare
Clear output on compare
Set output on compare
Toggle output on compare
Clear output on compare
Set output on compare
Table
Configuration
19-2.) Reset clears the MSxA
I/O Registers
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