DSP56857 datasheet(522/662 Pages) FREESCALE

No. de pieza	DSP56857

Descripción Electrónicos	Digitial Signal Controller

PDF	662 Pages

Scroll/Zoom	100%

Fabricante Electrónico	FREESCALE [Freescale Semiconductor, Inc]

Página de inicio	http://www.freescale.com

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522 / 662 page

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Sheet

5685X Digital Signal Controller User Manual, Rev. 4

B-20

Freescale Semiconductor

COP Counter

$1FFFD0 + $2

Bits

Read

COUNT

Write

SERVICE

Reset

111

111111

3 of 3

COP

COP Counter Register (COPCTR)

Bits

Name

Description

15 - 0

COPCTR

COP Counter(Count)

This is the current value of the COP counter as it counts down from the timeout value to zero. A

reset is issued when this count reaches zero.

15 - 0

COPCTR

COP Counter (Service)

When enabled, the COP requires a service sequence be performed periodically in order to clear

the COP counter and prevent a reset from being issued. This routine consists of writing $5555 to

the COPCTR followed by writing $AAAA before the timeout period expires. The writes to COPCTR

must be performed in the correct order, but any number of other instructions, and writes to other

registers, may be executed between the two writes.

DSP56857 Datasheet(PDF) 522 Page - Freescale Semiconductor, Inc