Texas-instruments Digital Signal Processor SM320F2812-HT Manuel d'utilisateur télécharger pdf (Page 106)

PWM

(see Note C)

TxCTRIP

, CxTRIP,

PDPINTx

(see Note B)

XCLKOUT

(see Note A)

w(PDP)

, t

w(CxTRIP)

, t

w(TxCTRIP)

d(PDP-PWM)HZ

, t

d(TRIP-PWM)HZ

XNMI, XINT1, XINT2

w(INT)

Interrupt Vector

d(INT)

A0−A15

SM320F2812-HT

SGUS062B–JUNE 2009 – REVISED JUNE 2011

www.ti.com

Table 6-18. Interrupt Timing Requirements

MIN MAX UNIT

with no qualifier 2 × t

c(SCO)

w(INT)

(1)

Pulse duration, INT input low/high cycles

with qualifier 1 × t

c(SCO)

+ IQT

(2)

with no qualifier 2 × t

c(SCO)

w(PDP)

Pulse duration, PDPINTx input low cycles

with qualifier 1 × t

c(SCO)

+ IQT

(2)

with no qualifier 2 × t

c(SCO)

w(CxTRIP)

(1)

Pulse duration, CxTRIP input low cycles

with qualifier 1 × t

c(SCO)

+ IQT

(2)

with no qualifier 2 × t

c(SCO)

w(TxCTRIP)

(1)

Pulse duration, TxCTRIP input low cycles

with qualifier 1 × t

c(SCO)

+ IQT

(2)

(1) Not production tested.

(2) Input Qualification Time (IQT) = [5 × QUALPRD × 2] × t

c(SCO)

A. XCLKOUT = SYSCLKOUT

B. TxCTRIP – T1CTRIP, T2CTRIP, T3CTRIP, T4CTRIP . CxTRIP – C1TRIP, C2TRIP, C3TRIP, C4TRIP, C5TRIP, or

C6TRIP. PDPINTx – PDPINTA or PDPINTB

C. PWM refers to all the PWM pins in the device (i.e., PWMn and TnPWM pins or PWM pin pair relevant to each

CxTRIP pin). The state of the PWM pins after PDPINTx is taken high depends on the state of the FCOMPOE bit.

Figure 6-20. External Interrupt Timing

6.17 General-Purpose Input/Output (GPIO) – Output Timing

Table 6-19. General-Purpose Output Switching Characteristics

PARAMETER MIN MAX UNIT

d(XCOH-GPO)

Delay time, XCLKOUT high to GPIO low/high All GPIOs 1 × t

c(SCO)

cycle

r(GPO)

(1)

Rise time, GPIO switching low to high All GPIOs 10 ns

f(GPO)

(1)

Fall time, GPIO switching high to low All GPIOs 10 ns

GPO

(1)

Toggling frequency, GPO pins 20 MHz

(1) Not production tested.

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