TMS320F2812 datasheet(113/170 Pages) TI

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PWM

(C)

TxCTRIP

CxTRIP

PDPINTx

(B)

XCLKOUT

(A)

, t

w(PDP)

w(CxTRIP)

w(TxCTRIP)

, t

d(PDP-PWM)HZ

d(TRIP-PWM)HZ

XNMI,

XINT1, XINT2

w(INT)

d(INT)

A0-A15

Interrupt Vector

TMS320F2810, TMS320F2811, TMS320F2812

TMS320C2810, TMS320C2811, TMS320C2812

www.ti.com

SPRS174S – APRIL 2001 – REVISED MARCH 2011

6.17.2 Interrupt Timing

Table 6-22. Interrupt Switching Characteristics

PARAMETER

MIN

MAX

UNIT

Without input qualifier

Delay time, PDPINTx low to PWM

td(PDP-PWM)HZ

high-impedance state

With input qualifier

1tc(SCO) + IQT + 12

(1)

Without input qualifier

3 * tc(SCO)

Delay time, CxTRIP/TxCTRIP signals low to

td(TRIP-PWM)HZ

PWM high-impedance state

With input qualifier

2tc(SCO) + IQT

(1)

td(INT)

Delay time, INT low/high to interrupt-vector fetch

IQT + 12tc(SCO)

(1)

Input Qualification Time (IQT) = [tc(SCO) × 2 × QUALPRD] × 5 + [tc(SCO) × 2 × QUALPRD].

Table 6-23. Interrupt Timing Requirements

MIN

MAX

UNIT

With no qualifier

2tc(SCO)

tw(INT)

Pulse duration, INT input low/high

cycles

With qualifier

1tc(SCO) + IQT

(1)

With no qualifier

2tc(SCO)

tw(PDP)

Pulse duration, PDPINTx input low

cycles

With qualifier

1tc(SCO) + IQT

(1)

With no qualifier

2tc(SCO)

tw(CxTRIP)

Pulse duration, CxTRIP input low

cycles

With qualifier

1tc(SCO) + IQT

(1)

With no qualifier

2tc(SCO)

tw(TxCTRIP)

Pulse duration, TxCTRIP input low

cycles

With qualifier

1tc(SCO) + IQT

(1)

Input Qualification Time (IQT) = [tc(SCO) × 2 × QUALPRD] × 5 + [tc(SCO) × 2 × QUALPRD].

XCLKOUT = SYSCLKOUT

TxCTRIP – T1CTRIP, T2CTRIP, T3CTRIP, T4CTRIP

CxTRIP – C1TRIP, C2TRIP, C3TRIP, C4TRIP, C5TRIP, or C6TRIP

PDPINTx – PDPINTA or PDPINTB

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 6-22. External Interrupt Timing

Electrical Specifications

113

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Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812

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