DSP56311 Motorola, DSP56311 Datasheet
DSP56311
Available stocks
Related parts for DSP56311
DSP56311 Summary of contents
Page 1
... Freescale Semiconductor Errata DSP56311 Device Errata for Mask 1K34A General remark: In order to prevent the use of instructions or sequences of instructions that do not operate correctly, we encourage you to use the “lint563” program to identify such cases and use alternative sequences of instructions. This program is available as part of the Freescale DSP Tools CLAS package. ...
Page 2
... DACT and DCH status bits in the DMA Status Register (DSTR) may indicate improper activity ED7 status for DMA Channel 0 (DACT = 1 and DCH[2:0] = 000). Workaround: None. This is not a bug, but a specification update. DSP56311 Device Errata for Mask 1K34A, Rev x1,y0,a x1,x:(r1)+ y:(r6)+,y0 y0,y1 1K34A ...
Page 3
... DTDx bit in DSTR will be cleared only after two instruction cycles.” Should be replaced with: “Due to the DSP56300 Core pipeline, after DE bit in DCRx is set, the corresponding DTDx bit in DSTR will be cleared only after three instruction cycles.” DSP56311 Device Errata for Mask 1K34A, Rev. 5 Freescale Semiconductor Documentation Errata 1K34A ...
Page 4
... ED30 Workaround: To ensure correct operation, do not use the On-Demand mode with the WL[2:0] = 100 32-bit Word-Length mode. Pertains to: UM, Section 7.5.4.1, “Normal/On-Demand Mode Selection.” DSP56311 Device Errata for Mask 1K34A, Rev conditional branch at LA internal LA ; external LA Freescale Semiconductor 1K34A ...
Page 5
... Workaround: Replace the RTI with the following sequence: movec nop rti Pertains to: DSP56300 Family Manual. Add a new section to Appendix B that is entitled “Sixteen-Bit Compatibility Mode Restrictions.” DSP56311 Device Errata for Mask 1K34A, Rev. 5 Freescale Semiconductor ESSI1. ssl,sr Documentation Errata 1K34A 1K34A ...
Page 6
... We split between two cases, finite loops and do forever loops. 1) Finite DO loops (i.e. not DO FOREVER loops) ============================================== BRKcc Original code: do #N,label1 ..... ..... ED33 label2 ..... ..... label1 Will be replaced by: do #N, label1 ..... ..... DSP56311 Device Errata for Mask 1K34A, Rev #M,label2 ..... ..... BRKcc ..... ..... do #M, label2 ..... ..... Jcc fix_brk_routine ..... ..... 1K34A Freescale Semiconductor ...
Page 7
... ENDDO ------ Original code: do #M,label1 ..... ..... ED33 cont. label2 ..... ..... label1 Will be replaced by: do #M, label1 ..... ..... DSP56311 Device Errata for Mask 1K34A, Rev. 5 Freescale Semiconductor nop ; This instruction must be NOP. nop_before_label2 do #N,label2 ..... ..... ENDDO ..... ..... do #N, label2 ..... ..... JMP fix_enddo_routine Documentation Errata 1K34A 7 ...
Page 8
... Documentation Errata nop_after_jmp label2 ..... ..... label1 .... .... fix_enddo_routine move #1,lc move #nop_after_jmp,la jmp 2) DO FOREVER loops =================== ED33 cont. BRKcc ----- Original code: do #M,label1 ..... ..... label2 ..... ..... label1 DSP56311 Device Errata for Mask 1K34A, Rev NOP ; This instruction must be NOP. ..... ..... nop_after_jmp do forever,label2 ..... ..... BRKcc ..... ..... 1K34A Freescale Semiconductor ...
Page 9
... ENDDO ------ Original code: do #M,label1 ..... ..... DSP56311 Device Errata for Mask 1K34A, Rev. 5 Freescale Semiconductor do forever,label2 ..... ..... JScc fix_brk_forever_routine ..... ..... nop ; This instruction must be NOP. ; <..> is some reserved not used ; ; <---- note: "rti" and not "rts" ! ...
Page 10
... ED33 cont. JSR and not JMP nop_after_jmp NOP ..... ..... label2 ..... ..... label1 .... .... fix_enddo_routine "rts" Pertains to: DSP56300 Family Manual, Section B-4.2, “General Do Restrictions.” DSP56311 Device Errata for Mask 1K34A, Rev forever,label2 ..... ..... ENDDO ..... ..... ..... ..... do forever,label2 ..... ..... JSR fix_enddo_routine ; This instruction should be NOP nop move #1,lc ...
Page 11
... BAT[1 –0] bits in the AAR3 - AAR0 registers. Also pertains to the core chapter in device-specific user’s manuals that include a description of the AAR3 - AAR0 registers with bit definitions (usually Chapter 4). DSP56311 Device Errata for Mask 1K34A, Rev. 5 Freescale Semiconductor Documentation Errata ...
Page 12
... DE is not cleared at the end of the block transfer (DTM = 100 or 101). ED42 Pertains to: DSP56300 Family Manual, Rev. 2, Section 10.4.1.2, “End-of-Block-Transfer Interrupt.” Also, Section 10.5.3.5, “DMA Control Registers (DCR[5–0],” discussion of bits 21 – 19 (DTM bits). DSP56311 Device Errata for Mask 1K34A, Rev x(r0)+,x0 1K34A 1K34A Freescale Semiconductor ...
Page 13
... Workaround: Not available. NOTES 1. An over-bar (i.e., xxxx) indicates an active-low signal. 2. The letters in the right column tell which DSP56311 mask numbers apply. DSP56311 Device Errata for Mask 1K34A, Rev. 5 Freescale Semiconductor NOTES 1K34A ...
Page 14
... P.O. Box 5405 Denver, Colorado 80217 1-800-441-2447 or 303-675-2140 Fax: 303-675-2150 LDCForFreescaleSemiconductor@hibbertgroup.com DSP56311CE1K34A Rev. 5 11/2004 Information in this document is provided solely to enable system and software implementers to use Freescale Semiconductor products. There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document ...