DSP56857 datasheet(400/662 Pages) FREESCALE

400 / 662 page

5685X Digital Signal Controller User Manual, Rev. 4

14-14

Freescale Semiconductor

14.6.9.1 Reserved—Bits 15–5

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

14.6.9.2 Time-of-Day Hours Alarm (TODHAL)—Bits 4–0

When the value contained in this register matches the value of the hours counter, the hours alarm

is asserted if the Hours Alarm Enable (TODHA) bit and the Alarm Interrupt Enable (TODAEN)

bit are both set and all other enabled alarm registers also match the current time.

14.6.10 Time-of-Day Days Register (TODDAY)

Figure 14-11. TOD Days Register (TODDAY)

See Programmer’s Sheet on Appendix page B - 103

14.6.10.1 Time-of-Day Days (TODDAY)—Bits 15–0

When TODEN is set, this counter is continuously updated to contain the current days counter

value. The value of the counter can be read through the days register, but it cannot be modified.

When TODEN is cleared, TOD counting is disabled. This counter can then be read or written.

When TODEN is set to one again, counting will resume counting from the current register value.

14.6.11 Time-of-Day Days Alarm Register (TODDAL)

Figure 14-12. TOD Days Alarm Register (TODDAL)

See Programmer’s Sheet on Appendix page B - 104

14.6.11.1 Time-of-Day Days Alarm (TODDAL)—Bits 15–0

When the value contained in this register matches the value of the days counter, the days alarm

interrupt is asserted if the Days Alarm Enable (TODDA) bit and Alarm Interrupt Enable

(TODAEN) bit are both set and all other enabled alarm registers also match the current time.

Base + $8

Read

TODDAY

Write

Reset

00000

00000000

Base + $9

Read

TODDAL

Write

Reset

00000000000000

DSP56857 Datasheet(PDF) 400 Page - Freescale Semiconductor, Inc