TMS320C6421 datasheet(41/59 Pages) TI

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TMS320C6421

Fixed-Point Digital Signal Processor

SPRS346A – JANUARY 2007 – REVISED MARCH 2007

Table 2-23. Timer 0, Timer 1, and Timer 2 Terminal Functions

SIGNAL

TYPE(1)

OTHER(2)(3)

DESCRIPTION

ZWT

ZDU

NAME

NO.

Timer 2

No external pins. The Timer 2 (watchdog) peripheral pins are not pinned out as external pins.

Timer 1

This pin is multiplexed between the Timer 1 and GPIO.

TINP1L/

IPU

I/O/Z

For Timer 1, this pin is the timer 1 input pin for the lower 32-bit

GP[56]

DVDD33

counter

This pin is multiplexed between the Timer 1 and GPIO.

TOUT1L/

IPU

I/O/Z

For Timer 1, this pin is the timer 1 output pin for the lower 32-bit

GP[55]

DVDD33

counter

Timer 0

This pin is multiplexed between the Timer 0 and GPIO.

TINP0L/

IPD

I/O/Z

For Timer 0, this pin is the timer 0 input pin for the lower 32-bit

GP[98]

DVDD33

counter

CLKS0/

This pin is multiplexed between the McBSP0, Timer 0, and GPIO.

IPD

TOUT0L/

I/O/Z

For Timer 0, this pin is the timer 0 output pin for the lower 32-bit

DVDD33

GP[97]

counter

(1)

I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal

(2)

IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup/pulldown resistors and situations where external

pullup/pulldown resistors are required, see Section 3.2.1, Pullup/Pulldown Resistors.

(3)

Specifies the operating I/O supply voltage for each signal

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