mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 751

• Manufacturer Part Number: mcf51jf128
• Description: Mcf51jf128 Reference Manual
• Manufacturer: Freescale Semiconductor, Inc

34.4.2 MTIM16 clock configuration register (MTIMx_CLK)
This register contains the clock select bits (CLKS) and the prescaler select bits (PS).
Addresses: MTIM0_CLK is FFFF_8410h base + 1h offset = FFFF_8411h
Freescale Semiconductor, Inc.
Reserved
Reserved
TRST
TSTP
TOIE
Field
Reset
Field
3–0
Read
7–6
Write
6
5
4
Bit
This bit is set when the MTIM16 counter register overflows to 0x0000 after reaching the value in the
MTIM16 modulo register. Clear TOF by reading the SC register while TOF is set and then by writing 0 to
TOF. Writing 1 has no effect. TOF is also cleared when 1 is written to TRST.
0
1
MTIM16 overflow interrupt enable
This read/write bit enables MTIM16 overflow interrupts. If TOIE is set, then an interrupt is generated when
TOF = 1. Reset clears TOIE. Do not set TOIE if TOF = 1; instead, clear TOF first, and then set TOIE.
0
1
MTIM16 counter reset
When 1 is written to this write-only bit, the MTIM16 counter register resets to 0x0000 and TOF is cleared.
Writing 1 to this bit also causes the modulo value to take effect at once. Reading this bit always returns 0.
0
1
MTIM16 counter stop
When set, this read/write bit stops the MTIM16 counter at its current value. Counting resumes from the
current value when TSTP is cleared. Reset sets TSTP to prevent the MTIM16 from counting.
0
1
This read-only bitfield is reserved and always has the value zero.
This read-only bitfield is reserved and always has the value zero.
7
0
MTIM16 counter has not reached the overflow value in the MTIM16 modulo register.
MTIM16 counter has reached the overflow value in the MTIM16 modulo register.
TOF interrupts are disabled. Use software polling.
TOF interrupts are enabled.
No effect. MTIM16 counter remains in its current state.
MTIM16 counter is reset to 0x0000.
MTIM16 counter is active.
MTIM16 counter is stopped.
0
MTIM0_SC field descriptions (continued)
0
6
MCF51JF128 Reference Manual, Rev. 2, 03/2011
MTIM0_CLK field descriptions
Table continues on the next page...
0
5
CLKS
Preliminary
0
4
Description
Description
0
3
0
2
Chapter 34 Modulo Timer (MTIM)
PS
0
1
0
0
751