Datasheet > DSP56300

DSP56300

更新时间： 2024-11-23 22:40:39

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		数字信号处理器
页数	文件大小	规格书
21页	216K
描述
DSP56301 Digital Signal Processor

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DSP56300 数据手册

Freescale Semiconductor, Inc.

Chip Errata

DSP56301 Digital Signal Processor

Mask: 2K30A

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

Motorola DSP Tools CLAS package.

Silicon Errata

Applies

to Mask

Errata

Number

Errata Description

Description (added 8/16/2001):

2K30A

Some K30A devices shipped under an XC part number are subject to a problem

if operated in DMA mode 5. The problem occurs if two consecutive host

commands are sent to the DSP. The second host command is received, the

corresponding answer message is composed, and the DMA channel is set up

correctly to transmit the message to the host. However, the message is never sent.

The host port status register shows a host transmit data request (bit HTRQ in

HSTR is set.) DTDn is never set, indicating there has been no terminated

transfer. Sequences of: 1. data, 2. host command to terminate the transfer, and

3. acknowledgement from the host work properly and can be repeated as often

as needed. If a second host command is sent to the DSP, without first sending

data, the DMA channel locks up. This problem has proven to be low level to

date, occurring at a rate of about 350 ppm. The product’s performance regarding

this issue does not drift over time; that is, it is not a reliability risk.

ES133

The problem can also be manifested in other modes when more than one DMA

channel is operating, with two or more channels moving data while one is

servicing the PCI FIFO. In this case, the channel servicing the PCI FIFO stalls

and the PCI bus enters an endless state of retries.

Motorola Semiconductor Products Sector

301CE2K30A_0_8

ng 12/19/02 pg. 1

 1996-2002 Motorola

6501 William Cannon Drive West, Austin, Texas 78735-8598

For More Information On This Product,

Go to: www.freescale.com

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