AM261...ZCZ datasheet(169/218 Pages) TI2

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CLOCKIN

DATAIN

PRPC1

PRPC2

PRPC3

PRPC5

PRU_TIMING_04

PRPC4

Figure 6-67. PRU-ICSS PRU Parallel Capture Timing Requirements – Falling Edge Mode

6.11.5.14.1.4 PRU-ICSS PRU Timing Requirements - Shift In Mode

NO.

PARAMETER

DESCRIPTION

MIN

MAX

UNIT

PRSI1

tw(PRU_DATAINH)

Pulse duration, PRU_DATAIN High

2 + 2P(1)

PRSI2

tw(PRU_DATAINL)

Pulse duration, PRU_DATAIN Low

2 + 2P(1)

(1)

P = Internal shift in clock period, defined by PRU_GPI_DIV0 and PRU0_GPI_DIV1 bit fields in the GPCFGn register.

DATAIN

PRSI1

PRSI2

PRU_TIMING_05

Figure 6-68. PRU-ICSS PRU Shift In Timing

6.11.5.14.1.5 PRU-ICSS PRU Switching Characteristics - Shift Out Mode

NO.

PARAMETER

DESCRIPTION

MIN

MAX

UNIT

PRSO1

tc(PRU_CLOCKOUT)

Cycle time, PRU_CLOCKOUT

PRSO2L tw(PRU_CLOCKOUTL)

Pulse duration, PRU_CLOCKOUT Low

–0.3 + 0.475 × P(1) × Z(2)

PRSO2H tw(PRU_CLOCKOUTH)

Pulse duration, PRU_CLOCKOUT High

–0.3 + 0.475 × P(1) × Y(3)

PRSO3

td(PRU_CLOCKOUT-

PRU_DATAOUT)

Delay time, PRU_CLOCKOUT to

PRU_DATAOUT Valid

(1)

P = Software programmable shift out clock period, defined by PRU0_GP0_Div0 and PRU0_GPO_DIV1 bit fields in the GPCFGn

(2)

The Z parameter is defined as follows:

If PRU0_GPI_DIV0 and PRU0_GPI_DIV1 are INTEGERS -or- if PRU0_GPI_DIV0 is a NON-INTEGER and PRU0_GPI_DIV1 is an

EVEN INTEGER then,

Z equals (PRU0_GPI_DIV0 * PRU0_GPI_DIV1).

If PRU0_GPI_DIV0 is a NON-INTEGER and PRU0_GPI_DIV1 is an ODD INTEGER then,

Z equals (PRU0_GPI_DIV0 * PRU0_GPI_DIV1 + 0.5).

If PRU0_GPI_DIV0 is an INTEGER and PRU0_GPI_DIV1 is a NON-INTEGER then,

Z equals (PRU0_GPI_DIV0 * PRU0_GPI_DIV1 + 0.5 * PRU0_GPI_DIV0).

If PRU0_GPI_DIV0 and PRU0_GPI_DIV1 are NON-INTEGERS then,

Z equals (PRU0_GPI_DIV0 * PRU0_GPI_DIV1 + 0.25 * PRU0_GPI_DIV0).

(3)

The Y parameter is defined as follows:

If PRU0_GPI_DIV0 and PRU0_GPI_DIV1 are INTEGERS -or- if PRU0_GPI_DIV0 is a NON-INTEGER and PRU0_GPI_DIV1 is an

EVEN INTEGER then,

Y equals (PRU0_GPI_DIV0 * PRU0_GPI_DIV1).

If PRU0_GPI_DIV0 is a NON-INTEGER and PRU0_GPI_DIV1 is an ODD INTEGER then,

Y equals (PRU0_GPI_DIV0 * PRU0_GPI_DIV1 - 0.5).

If PRU0_GPI_DIV0 is an INTEGER and PRU0_GPI_DIV1 is a NON-INTEGER then,

Y equals (PRU0_GPI_DIV0 * PRU0_GPI_DIV1 - 0.5 * PRU0_GPI_DIV0).

If PRU0_GPI_DIV0 and PRU0_GPI_DIV1 are NON-INTEGERS then,

Y1 equals (PRU0_GPI_DIV0 * PRU0_GPI_DIV1 - 0.25 * PRU0_GPI_DIV0) and

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AM2612, AM2611, AM2611-Q1, AM2612-Q1

SPRSPA7C – SEPTEMBER 2024 – REVISED JULY 2025

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