C6416 datasheet(128/134 Pages) TI1

128 / 134 page

SMJ320C6414, SMJ320C6415, SMJ320C6416

FIXEDPOINT DIGITAL SIGNAL PROCESSORS

SGUS050A − JANUARY 2004 − REVISED MARCH 2004

128

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GENERAL-PURPOSE INPUT/OUTPUT (GPIO) PORT TIMING

timing requirements for GPIO inputs†‡ (see Figure 62)

NO.

MIN

MAX

UNIT

tw(GPIH)

Pulse duration, GPIx high

8P*

tw(GPIL)

Pulse duration, GPIx low

8P*

*This parameter is not production tested.

† P = 1/CPU clock frequency in ns. For example, when running parts at 600 MHz, use P = 1.67 ns.

‡ The pulse width given is sufficient to generate a CPU interrupt or an EDMA event. However, if a user wants to have the DSP recognize the GPIx

changes through software polling of the GPIO register, the GPIx duration must be extended to at least 12P to allow the DSP enough time to access

the GPIO register through the CFGBUS.

switching characteristics over recommended operating conditions for GPIO outputs†

(see Figure 62)

NO.

PARAMETER

MIN

MAX

UNIT

tw(GPOH)

Pulse duration, GPOx high

32P*

tw(GPOL)

Pulse duration, GPOx low

32P*

*This parameter is not production tested.

† P = 1/CPU clock frequency in ns. For example, when running parts at 600 MHz, use P = 1.67 ns.

GPIx

GPOx

Figure 62. GPIO Port Timing

C6416 Datasheet(PDF) 128 Page - Texas Instruments