DSP56366 View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

Manufacturer

DSP56366

Digital Signal Processor

Motorola => Freescale 

Freescale Semiconductor, Inc.

Chip Errata

DSP56366 Digital Signal Processor

Mask:2J26D

Errata

Number

ES119

Errata Description

Description (added 7/27/99):

Applies

to Mask

2J26D

When disabling DAX interrupts in the XCTR register (or disabling the DAX)

exactly when the DAX interrupt is pending at the DSP core, an unknown interrupt

vector may be generated.

Workaround:

The user should first turn off DAX interrupt requests by clearing DAL0 and DAL1

bits in the IPRP register, then issue 6 NOP instructions, then clear interrupt enable

bits in the XCTR register (or disable DAX), issue another 6 NOP instructions, and

finally re-enable the DAL0 and DAL1 bits on IPRP as shown in the following

example:

;; Clear the relevant bits in the IPRP register

BCLR #M_DAL0,x:M_IPRP

BCLR #M_DAL1,x:M_IPRP

;; Issue 6 NOP instructions

NOP

NOP

NOP

NOP

NOP

NOP

;; Clear the interrupt enable bits in the XCTR register

BCLR #M_XBIE,x:M_XCTR

BCLR #M_XUIE,x:M_XCTR

BCLR #M_XDIE,x:M_XCTR

;; Issue 6 NOP instructions

NOP

NOP

NOP

NOP

NOP

NOP

;; Restore the required DAX interrupt level

BSET #M_DAL0,x:M_IPRP

BSET #M_DAL1,x:M_IPRP

DSP56366 Errata

 1997 -2001, Motorola

For Mor3e66ICnfEo2rJm26aDt_io0n_0On This Product,

Go to: www.freescale.com

NG 11/12/01 pg. 11 of 25

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