TMS320DM6431 datasheet(95/227 Pages) TI1

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3.7.3.7 Timer1 Block

TMS320DM6431

Digital Media Processor

www.ti.com

SPRS342C – NOVEMBER 2006 – REVISED JUNE 2008

Table 3-28. Timer0 Block Function Selection

PINMUX1.TIM0BK

BLOCK FUNCTION

RESULTING PIN FUNCTIONS

GPIO (2) (default)

GPIO: GP[98:97]

Timer0

Timer0: TINP0L, TOUT0L

Reserved

–

McBSP0 External Clock Source,

McBSP0: CLKS0

Timer0 Input

Timer0: TINP0L

In addition, the VDD3P3V_PWDN.TIMER0 field determines the power state of the Timer0 Block pins. The

Timer0 Block pins default to powered down and not operational. To use these pins, user must first

program

VDD3P3V_PWDN.TIMER0

power

the

pins.

For

details

the

VDD3P3V_PWDN.TIMER0 field, see Section 3.2, Power Considerations.

This block of 2 pins consists of Timer1, HECC, and GPIO muxed pins. The PINMUX1.TIM1BK register

field selects the pin functions in the Timer1 Block.

Table 3-29 summarizes the 2 pins in the Timer1 Block, the multiplexed function on each pin, and the

PINMUX configurations to select the corresponding function.

Table 3-29. Timer1 Block Muxed Pins Selection

MULTIPLEXED FUNCTIONS

SIGNAL

HECC

TIMER1

GPIO

NAME

FUNCTION

SELECT

FUNCTION

SELECT

FUNCTION

SELECT

HECC_RX/

TINP1L/

HECC_RX

TINP1L

GP[56]

TIM1BK = 11

TIM1BK = 01

TIM1BK = 00

HECC_TX/

TOUT1L/

HECC_TX

TOUT1L

GP[55]

Table 3-30 provides a different view of the Timer1 Block pin muxing, showing the Timer1 Block function

based on PINMUX1.TIM1BK setting. The selection options are also shown pictorially in Figure 3-10.

Table 3-30. Timer1 Block Function Selection

PINMUX1.TIM1BK

BLOCK FUNCTION

RESULTING PIN FUNCTIONS

GPIO (2) (default)

GPIO: GP[56:55]

Timer1

Timer1: TINP1L, TOUT1L

Reserved

–

HECC

HECC: HECC_RX, HECC_TX

In addition, the VDD3P3V_PWDN.TIMER1 field determines the power state of the Timer1 Block pins. The

Timer1 Block pins default to powered down and not operational. To use these pins, user must first

program

VDD3P3V_PWDN.TIMER1

power

the

pins.

For

details

the

VDD3P3V_PWDN.TIMER1 field, see Section 3.2, Power Considerations.

The Timer1 Block features internal pull up resistors, which matches the HECC inactive polarity.

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