MMC2107 - Freescale Semiconductor

Freescale Semiconductor, Inc.
Programmable Interrupt Timer Modules (PIT1 and PIT2)
Table 14-2. Prescaler Select Encoding
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Freescale Semiconductor, I
PRE[3:0]
System Clock Divisor
0000 1
0001 2
0010 4
0011 8
0100 16
0101 32
0110 64
0111 128
1000 256
1001 512
1010 1,024
1011 2,048
1100 4,096
1101 8,192
1110 16,384
1111 32,768
PDBG — Debug Mode Bit
The read/write PDBG bit controls the function of the PIT in debug
mode. Reset clears PDBG.
1 = PIT function stopped in debug mode
0 = PIT function not affected in debug mode
During debug mode, register read and write accesses function
normally. When debug mode is exited, timer operation continues from
the state it was in before entering debug mode, but any updates made
in debug mode remain.
NOTE:
Changing the PDBG bit from 1 to 0 during debug mode starts the PIT
timer. Likewise, changing the PDBG bit from 0 to 1 during debug mode
stops the PIT timer.
Technical Data MMC2107 – Rev. 2.0
286 Programmable Interrupt Timer Modules (PIT1 and PIT2) MOTOROLA
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