MPC821 datasheet(83/242 Pages) NXP

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MPC8XXFADS Design Specification—Rev 0.1

PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE

DEBUG_CLOCK_DIV_BY_8 = (Cstr.fb == 3);

"******************************************************************************

"* AdsAck Logic definitions

"******************************************************************************

BUNDLE_DELAY = 2;

HOST_REQ_ACTIVE

= 1;

ADS_ACK_ACTIVE

= 1;

"The other state is -

!ADS_ACK_ACTIVE

HOST_ACK_ACTIVE = 1;

HOST_WRITE_ADI

= ( (AdsSelect~.fb==BOARD_IS_SELECTED) &

(DS_HstReq.fb ==HOST_REQ_ACTIVE) &

(AdsAck==!ADS_ACK_ACTIVE) &

(HstAck==!HOST_ACK_ACTIVE) );

HOST_WRITE_ADI_CONTROL

= ( (AdsSelect~.fb==BOARD_IS_SELECTED) &

(DS_HstReq.fb ==HOST_REQ_ACTIVE) &

(AdsAck==!ADS_ACK_ACTIVE) &

(D_C~==CONTROL) &

(S_D_C~.fb == CONTROL) &

(HstAck==!HOST_ACK_ACTIVE) );

HOST_WRITE_ADI_DATA

= ( (AdsSelect~.fb==BOARD_IS_SELECTED) &

(DS_HstReq.fb==HOST_REQ_ACTIVE) &

(AdsAck==!ADS_ACK_ACTIVE) &

(D_C~==DATA) &

(S_D_C~.fb ==DATA) &

(HstAck==!HOST_ACK_ACTIVE) );

HOST_WRITE_COMPLETE

= ( (AdsSelect~.fb==BOARD_IS_SELECTED) &

(DS_HstReq.fb==!HOST_REQ_ACTIVE) &

(AdsAck==!ADS_ACK_ACTIVE) );

"******************************************************************************

"* Control & Status register definitions

"******************************************************************************

STATUS_REQUEST= 0;

DEBUG_ENTRY= 0;

DIAG_LOOP_BACK= 0;

IN_DEBUG_MODE

= 1;

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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