SM320F2808-EP Datasheet, PDF (43/118 Pages) Texas Instruments – Digital Signal Processors

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4 Peripherals
SM320F2808-EP, SM320F2806-EP
SM320F2801-EP
Digital Signal Processors
SGLS316A – MARCH 2006 – REVISED FEBRUARY 2007
The integrated peripherals of the 280x are described in the following subsections:
• Three 32-bit CPU-Timers
• Up to six enhanced PWM modules (ePWM1, ePWM2, ePWM3, ePWM4, ePWM5, ePWM6)
• Up to four enhanced capture modules (eCAP1, eCAP2, eCAP3, eCAP4)
• Up to two enhanced QEP modules (eQEP1, eQEP2)
• Enhanced analog-to-digital converter (ADC) module
• Up to two enhanced controller area network (eCAN) modules (eCAN-A, eCAN-B)
• Up to two serial communications interface modules (SCI-A, SCI-B)
• Up to four serial peripheral interface (SPI) modules (SPI-A, SPI-B, SPI-C, SPI-D)
• Inter-integrated circuit module (I²C)
• Digital I/O and shared pin functions
4.1 32-Bit CPU-Timers 0/1/2
There are three 32-bit CPU-timers on the 280x devices (CPU-TIMER0/1/2).
CPU-Timer 1 is reserved for Texas Instruments system functions and Timer 2 is reserved for
DSP/BIOS™. CPU-Timer 0 can be used in user applications. These timers are different from the timers
that are present in the ePWM modules.
NOTE
NOTE: If the application is not using DSP/BIOS, then CPU-Timer 2 can be used in the
application.
Reset
Timer Reload
16-Bit Timer Divide-Down
TDDRH:TDDR
32-Bit Timer Period
PRDH:PRD
SYSCLKOUT
TCR.4
(Timer Start Status)
TINT
16-Bit Prescale Counter
PSCH:PSC
Borrow
Figure 4-1. CPU-Timers
32-Bit Counter
TIMH:TIM
Borrow
In the 280x devices, the timer interrupt signals (TINT0, TINT1, TINT2) are connected as shown in
Figure 4-2.
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Peripherals
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