DSP56857 datasheet(395/662 Pages) FREESCALE

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Time-Of-Day (TOD), Rev. 4

Freescale Semiconductor

14-9

14.6.2 Time-of-Day Control Status (TODCS)

The TOD Control Status register controls TOD operation.

Figure 14-3. TOD Control Status (TODCS)

See Programmer’s Sheet on Appendix page B - 95

14.6.2.1 Time-of-Day 1-Second Interrupt Occurred Flag (TODSIO)—Bit 15

This bit is set when one-second interrupt occurs. This bit is cleared by writing 0 to the bit

position. It must be cleared before exiting the Interrupt Service Routine (ISR).

14.6.2.2 Time-of-Day Alarm Interrupt Occurred Flag (TODAL)—Bit 14

This bit is set when TOD Alarm Interrupt occurs. This bit is cleared by writing 0 to the bit

position. This bit must be cleared before exiting the Interrupt Service Routine.

14.6.2.3 Reserved—Bits 13–10

These bits are reserved or not implemented. They cannot be read nor modified by writing.

14.6.2.4 Test (TEST)—Bits 8–9

This bit field is reserved as factory test bits and must be written as 0.

14.6.2.5 Time-of-Day Days Alarm Enable (TODDA)—Bit 7

•

0 = Alarm interrupt ignores days counter

•

1 = Alarm interrupt requires match of days alarm register to days counter

14.6.2.6 Time-of-Day Hours Alarm Enable (TODHA)—Bit 6

•

0 = Alarm interrupt ignores hours counter

•

1 = Alarm interrupt requires match of hours alarm register to hours counter

Base + $0

13 12 11 10 9 8

Read

TODSIO TODAL

TEST TODDA TODHA TODMA TODSA TODSEN TODAEN TOD_LOCK TODEN

Write

Reset

00 00 0 0

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