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DSP56857 Datasheet(PDF) 394 Page - Freescale Semiconductor, Inc |
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DSP56857 Datasheet(HTML) 394 Page - Freescale Semiconductor, Inc |
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394 / 662 page  Register Description (TOD_BASE = $1FFFC0) 5685X Digital Signal Controller User Manual, Rev. 4 14-8 Freescale Semiconductor 14.5.6 1-Second Interrupt Flag and Outputs The one-second interrupt feature provides a means of detecting the passage of one-second time intervals. The one-second interrupt is triggered and the TOD Seconds Interrupt (TODSID) occurred flag in the Status Control register is set on the rising edge of the 1Hz clock. The 1Hz clock is derived out of the scaler counter. This clock only operates while the TOD Enable (TODEN) is set. The TODSID bit is cleared by writing 0 to it while it contains a one. This interrupt will function in the Stop mode; however, the TOD module must be configured and enabled prior to entering the Stop mode. The one-second interrupt output is used to signal a one-second interrupt to the interrupt controller. The interrupt will not be taken unless it is also enabled in the Interrupt Controller module. 14.6 Register Description (TOD_BASE = $1FFFC0) The address of a register is the sum of a base address and an address offset. The base address is defined at the MCU level and the address offset is defined at the module level. The base address given for each register will be TOD_BASE. 14.6.1 TOD Register Map Table 14-2. TOD Register Map Register Address Register Name Register Function Decimal Range When Write Enabled POR Value $1FFFC0 TODCS TOD Control/Status N/C Always 0 $1FFFC1 TODCSL Clock Scaler Load 0-65535 TODEN = 0 0 $1FFFC2 TODSEC Seconds 0-59 TODEN = 0 0 $1FFFC3 TODSAL Seconds Alarm 0-59 Always 0 $1FFFC4 TODMIN Minutes 0-59 TODEN = 0 0 $1FFFC5 TODMAL Minutes Alarm 0-59 Always 0 $1FFFC6 TODHR Hours 0-23 TODEN = 0 0 $1FFFC7 TODHAL Hours Alarm 0-23 Always 0 $1FFFC8 TODDAY Days 0-65535 TODEN = 0 0 $1FFFC9 TODDAL Days Alarm 0-65535 Always 0 |
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