DSP56600FMSLASHAD datasheet(41/76 Pages) NXP

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DSP56652

DSP56652 Signal Description

Preliminary

MOTOROLA

DSP56652 Technical Data Sheet

1-35

Debug Control Port

If the MUX_CTL signal is driven high, the alternate MCU_DE and DSP_DE signal

locations are selected, and this interface is disabled. For debug port control signals

equipped with resistors, all pull-ups and pull-downs are automatically disconnected

when the pin is an output.

Table 1-21

Debug Port Control Signals

Signal Name

Signal

Type

State

during

Reset

Signal Description

MCU_DE

Input

Output

Input

Microcontroller debug event

ÑAs an input signal, this signal

provides a means to enter the debug mode of operation from an

external command converter. An an output signal, it acknowledges

that the MCU has entered the debug mode. This signal is equipped

with an open-drain 47k

W pull-up resistor.

When the MCU enters the debug mode due to a debug request or as

the result of meeting a breakpoint condition, it asserts MCU_DE

as an output signal for three clock cycles.

DSP_DE

Input

Output

Input

Digital signal processor debug event

ÑAs an input signal, this

signal provides a means to enter the debug mode of operation from

an external command converter. An an output signal, it acknow-

ledges that the DSP has entered the debug mode.This signal is

equipped with an open-drain 4k

W K pull-up resistor.

When the DSP enters the debug mode due to a debug request or as

the result of meeting a breakpoint condition, it asserts DSP_DE as

an output signal for three clock cycles.

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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