LC7861KE データシートの表示（PDF） - SANYO -> Panasonic

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LC7861KE

Digital Signal Processor for Compact Disc Players

SANYO -> Panasonic 

LC7861KE

C2 flag

Error correction and flag processing

No errors

No correction required · Flag reset

1 error

Correction · Flag reset

2 errors

Depends on C1 flags*1

3 errors or more

Depends on C1 flags*2

Note: 1. If the positions of the errors determined by the C2 check agree with the those specified by the C1 flags, the correction is performed and the

flags are cleared. However, if the number of C1 flags is 7 or higher, C2 correction may fail. In this case correction is not performed and the C1

flags are taken as the C2 flags without change. Error correction is not possible if one error position agrees and the other does not.

Furthermore, if the number of C1 flags is 5 or under, the C1 check result can be seen as unreliable. Accordingly, the flags will be set in this

case. Cases where the number of C1 flags is 6 or more are handled in the same way, and the C1 flags are taken as the C2 flags without

change. When there is not even one agreement between the error positions, error correction is, of course, impossible. Here, if the number of

C1 flags was 2 or under, data that was seen as correct after C1 correction is now seen as incorrect data. The flags are set in this case. The

other C1 flags are taken as the C2 flags without change.

2. When data is determined to have three or more errors and be uncorrectable, correction is, of course, impossible. Here, if the number of C1

flags was 2 or under, data that was seen as correct after C1 correction is now seen as incorrect data. The flag is set in this case. The other C1

flags are taken as the C2 flags without change.

Specifications of any and all SANYO products described or contained herein stipulate the performance,

characteristics, and functions of the described products in the independent state, and are not guarantees

of the performance, characteristics, and functions of the described products as mounted in the customer’s

products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,

the customer should always evaluate and test devices mounted in the customer’s products or equipment.

SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all

semiconductor products fail with some probability. It is possible that these probabilistic failures could

give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,

or that could cause damage to other property. When designing equipment, adopt safety measures so

that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective

circuits and error prevention circuits for safe design, redundant design, and structural design.

In the event that any or all SANYO products (including technical data, services) described or contained

herein are controlled under any of applicable local export control laws and regulations, such products must

not be exported without obtaining the export license from the authorities concerned in accordance with the

above law.

No part of this publication may be reproduced or transmitted in any form or by any means, electronic or

mechanical, including photocopying and recording, or any information storage or retrieval system,

or otherwise, without the prior written permission of SANYO Electric Co., Ltd.

Any and all information described or contained herein are subject to change without notice due to

product/technology improvement, etc. When designing equipment, refer to the “Delivery Specification”

for the SANYO product that you intend to use.

Information (including circuit diagrams and circuit parameters) herein is for example only; it is not

guaranteed for volume production. SANYO believes information herein is accurate and reliable, but

no guarantees are made or implied regarding its use or any infringements of intellectual property rights

or other rights of third parties.

This catalog provides information as of September, 1998. Specifications and information herein are

subject to change without notice.

PS No. 4818-18/18

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