Msk1: On writes, set this bit to mask bits 14..8. This prevents previous settings of bits 14..8 from being changed.
MP: Minute Pulse (read only): Current State of Minute-Pulse signal (at the time of the read).
MPP: Minute Pulse Pending (read only): This bit is set to the same state as the MPO bit (when the MPO bit is written). When the MPO is
written high, this bit goes low (=0) when the next selected Minute-Pulse edge occurs.
MPO: Minute Pulse Once: When low (=0), the selected Minute-Pulse edge always resets the Seconds value. When high (=1) the RTC
increment is inhibited, then when the first selected Minute-Pulse edge occurs, the Seconds value will be zeroed, the MPP bit will be
cleared and the RTC increment will be enabled. All subsequent Minute-Pulses edges will be ignored.
IntEN: Clock Interrupt Enable: Enable an interrupt to occur on each clock increment pulse. The Interrupt is cleared by reading (or writing) the
RTC Lower Word (the Minutes/Seconds counter) or by disabling the interrupt. There is a dedicated interrupt signal to the Coldfire for
the RTC interrupt.
SE: Seconds-Pulse Edge Select: Selects the edge (of the Seconds-Pulse) which causes the RTC increment, 0=falling, 1=rising.
EXT: External Time Base Select: 0=Internal Timebase (1 Hz), 1=External Timebase.
ME: Minute Edge select: Selects the edge (of the Minute-Pulse) which causes the RTC Seconds counter to be reset, 0=falling, 1=rising
Msk0: On writes, set this bit to mask bits 6..0. This prevents previous settings of bits 6..0 from being changed.
H4..0 Hours Setting, or reading (a number between 0 and 23).
Msk1: On writes, set this bit to mask bits 14..8. This prevents previous settings of bits 14..8 from being changed.
M5..0: Minute Setting, or reading (a number between 0 and 59)
Msk0: On writes, set this bit to mask bits 6..0. This prevents previous settings of bits 6..0 from being changed.
S5..0 Second Setting, or reading (a number between 0 and 59).
P4, P4, P2, P1 Port numbers
Direct Mode: 1= LED on, 0 = LED off
Auto Flash Mode: 1=LED on for 40ms / off for 40ms, 0=No effect
X= Don‟t care, fixed to 0.
