DSP56311CE1K34A 반도체 회로 부품 판매점
DSP56311 Device Errata for Mask
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 Motorola Inc |
Freescale Semiconductor
Errata
DSP56311CE1K34A
Rev. 5, 11/2004
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.
Silicon Errata
Errata
Number
Errata Description
None known.
Applies
to Mask
1K34A
© Freescale Semiconductor, Inc., 1997–2004. All rights reserved.
Documentation Errata
Documentation Errata
Description (revised 11/9/98):
XY memory data move does not work properly under one of the following two
situations:
1. The X-memory move destination is internal I/O and the Y-memory
move source is a register used as destination in the previous adjacent
move from non Y-memory
2. The Y-memory move destination is a register used as source in the next
adjacent move to non Y-memory.
Here are examples of the two cases (where x:(r1) is a peripheral):
ED1
Example 1:
move #$12,y0
move x0,x:(r7) y0,y:(r3) (while x:(r7) is a peripheral).
Example 2:
1K34A
ED3
ED7
mac
move
x1,y0,a x1,x:(r1)+
y0,y1
y:(r6)+,y0
Any of the following alternatives can be used:
1. Separate these two consecutive moves by any other instruction.
2. Split XY Data Move to two moves.
Pertains to: DSP56300 Family Manual, Section B-5 “Peripheral pipeline
restrictions.
Description (added before 2/18/1996):
BL pin timings T198 and T199 in the data sheet are changed, improving the
arbitration latency: T198 is 5 ns (max), T199 is 0 ns (min).
Pertains to: Data Sheet, Synchronous Timings (SRAM) table, Table 2-17.
Description (added 1/27/98):
When activity is passed from one DMA channel to another and the DMA interface
accesses external memory (which requires one or more wait states), the DACT and
DCH status bits in the DMA Status Register (DSTR) may indicate improper activity
status for DMA Channel 0 (DACT = 1 and DCH[2:0] = 000).
Workaround: None.
This is not a bug, but a specification update.
1K34A
1K34A
DSP56311 Device Errata for Mask 1K34A, Rev. 5
2 Freescale Semiconductor
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