DSP56309EVM Freescale Semiconductor, DSP56309EVM Datasheet - Page 194

• 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

Triple Timer Module
9.1.2 Individual Timer Block Diagram
Figure 9-2 shows the structure of an individual timer block. The DSP56309 treats each timer as a
memory-mapped peripheral with four registers occupying four 24-bit words in the X data
memory space. The three timers are identical in structure and function. Either standard polled or
interrupt programming techniques can be used to service the timers. A single, generic timer is
discussed in this chapter. Each timer includes the following:
The timer mode is controlled by the TC[3–0] bits which are TCSR[7–4]. For a listing of the timer
modes and descriptions of their operations, see Section 9.3, Operating Modes, on page 9-5.
9-2
24-bit counter
24-bit read/write Timer Control and Status Register (TCSR)
24-bit read-only Timer Count Register (TCR)
24-bit write-only Timer Load Register (TLR)
24-bit read/write Timer Compare Register (TCPR)
Logic for clock selection and interrupt/DMA trigger generation.
GDB
Timer Prescaler
Load Register
24
CLK/2
TPLR
24-bit Counter
Figure 9-1. Triple Timer Module Block Diagram
TIO0 TIO1 TIO2
Timer Prescaler
Count Register
24
DSP56309 User’s Manual, Rev. 1
TPCR
24
Timer 0
Timer 1
Timer 2
24
Freescale Semiconductor