Texas-instruments TMS320C6454 Uživatelský manuál stáhnout pdf (Strana 206)

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PRODUCT PREVIEW

7.15.3 Timers Electrical Data/Timing

TINPLx

TOUTLx

TMS320C6454

Fixed-Point Digital Signal Processor

SPRS311A – APRIL 2006 – REVISED DECEMBER 2006

Table 7-94. Timing Requirements for Timer Inputs

(1)

(see Figure 7-73 )

-720

-850

NO. UNIT

-1000

MIN MAX

1 t

w(TINPH)

Pulse duration, TINPLx high 12P ns

2 t

w(TINPL)

Pulse duration, TINPLx low 12P ns

(1) P = 1/CPU clock frequency in ns. For example, when running parts at 1000 MHz, use P = 1 ns.

Table 7-95. Switching Characteristics Over Recommended Operating Conditions for Timer Outputs

(1)

(see Figure 7-73 )

-720

-850

NO. PARAMETER UNIT

-1000

MIN MAX

3 t

w(TOUTH)

Pulse duration, TOUTLx high 12P – 3 ns

4 t

w(TOUTL)

Pulse duration, TOUTLx low 12P – 3 ns

(1) P = 1/CPU clock frequency in ns. For example, when running parts at 1000 MHz, use P = 1 ns.

Figure 7-73. Timer Timing

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Texas-instruments TMS320C6454 Uživatelský manuál Strana 206