DSP56309EVM Freescale Semiconductor, DSP56309EVM Datasheet - Page 43

• Manufacturer Part Number: DSP56309EVM
• Description: KIT EVALUATION FOR XC56309
• Manufacturer: Freescale Semiconductor
• Type: DSPr

Specifications of DSP56309EVM

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Description/function: Audio DSPs
• Product: Audio Modules
• For Use With/related Products: DSP56309
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

2.11 Timers
The DSP56309 has three identical and independent timers. Each can use internal or external
clocking, interrupt the DSP56309 after a specified number of events (clocks), or signal an
external device after counting a specific number of internal events.
Freescale Semiconductor
TIO0
TIO1
TIO2
Notes: 1.
Signal
Name
2.
Input or Output
Input or Output
Input or Output
In the Stop state, the signal maintains the last state as follows:
•
•
The Wait processing state does not affect the signal state.
Type
If the last state is input, the signal is an ignored input.
If the last state is output, these lines are tri-stated.
Ignored input
Ignored input
Ignored input
State During
Reset
Table 2-15. Triple Timer Signals
1, 2
DSP56309 User’s Manual, Rev. 1
Timer 0 Schmitt-Trigger Input/Output
As an external event counter or in Measurement mode, TIO0 is input. In
Watchdog, Timer, or Pulse Modulation mode, TIO0 is output. The default
mode after reset is GPIO input. This can be changed to output or
configured as a Timer Input/Output through the Timer 0 Control/Status
Register (TCSR0). This input is 5 V tolerant.
Timer 1 Schmitt-Trigger Input/Output
As an external event counter or in Measurement mode, TIO1 is input. In
Watchdog, Timer, or Pulse Modulation mode, TIO1 is output. The default
mode after reset is GPIO input. This can be changed to output or
configured as a Timer Input/Output through the Timer 1 Control/Status
Register (TCSR1). This input is 5 V tolerant.
Timer 2 Schmitt-Trigger Input/Output
As an external event counter or in Measurement mode, TIO2 is input. In
Watchdog, Timer, or Pulse Modulation mode, TIO2 is output. The default
mode after reset is GPIO input. This can be changed to output or
configured as a Timer Input/Output through the Timer 2 Control/Status
Register (TCSR2). This input is 5 V tolerant.
Signal Description
Timers
2-19