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PRODUCT INFORMATION
Vol. 66
CD Player Chip Set with Integrated Microcontroller Developed Intelligent DSP with standard software and servo IC with automatic adjustment functions
LA9251M, LC78601E, LC78602NE
Overview
The main functions provided by CD player system ICs consist of an RF amplifier, a servo block, a digital signal-processing block, memory, digital filters, D/A converters, and a microcontroller. Due to desires for rationalization of the manufacturing process, all of these functions except the microcontroller are usually integrated on a single special-purpose IC. Furthermore, the automatic adjustment technology used in the servo block has matured. However, there are still strong demands for further rationalization of CD player design, including the standardization of the CD player microcontroller software, which is currently a significant part of the new product development process. Sanyo has now developed an new CD player chip set consisting of an ASP (the LA9251M) and a DSP (the LC78601E or LC78602NE). By integrating the microcontroller on chip and incorporating the standard CD player sequencing, this system chip set reduces the number of chips from the earlier servo plus DSP plus microcontroller three-chip structure to a two-chip structure that excludes the microcontroller chip, and thus can contribute to system rationalization and reduced development times. Furthermore, this chip set is optimally matched to the Sanyo popularly-priced CD94V5 CD mechanism, and can be applied in a wide range of products, from radio/cassette players that include a CD player, to music center products, to independent CD players. The LA9251M is a servo signal-processing IC that includes an RF amplifier and adjustment functions. Since the tracking balance (EF balance) function executes in a self-completing manner internally to the IC, adjustment during manufacturing is not required. This IC also provides a follower operation that automatically sets the tracking gain and track detection level to be optimal for each disc played. This means that discs with low reflectivity can be played back under optimal conditions. In addition to basic functions such as CD player signal processing, servo control, 8x oversampling digital filters, and a 1-bit D/A converter, the LC78601E and LC78602NE also provide display drivers, remote control input processing, and key acquisition and control processing. As a result, a system microcontroller is no longer required. The LC78601E supports 2-digit LCD display, and the LC78602NE supports 2-digit LED display.
SANYO Electric Co., Ltd. Semiconductor Business Headquarters Overseas Marketing Division
TOKYO OFFICE: Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN 1
PRODUCT INFORMATION
LA9251M Features
* Automatic follower operation for optimized servo characteristics * Increased performance and reliability, as well as reduced parts counts and manufacturing steps, provided by automatic adjustment functions. * Improved track detection stability
Functions
* RF amplifier (I/V amplifier included) * Servo amplifier * Track detection * Defect detection * Shock detection * Automatic adjustment function (EF balance) * Automatic follower operation (tracking gain and track detection level)
Specifications
* Package: 64-pin QIP * BIP structure * 5 V single-voltage power supply
LC78601E and LC78602NE Features
* Includes CD player microcontroller, two-digit display driver, and remote control input functions. * Inclusion of standard CD player sequence control means that another microcontroller control is no longer required. * Adjustment-free EFM PLL * D/A converter using a delta-sigma technique based on a third-order noise shaper * Overall system rationalization and improved reliability are possible since a microcontroller is not required.
SANYO Electric Co., Ltd. Semiconductor Business Headquarters Overseas Marketing Division
2
PRODUCT INFORMATION
Functions
* Built-in 2-digit LCD display driver (LC78601E) Three-common and 6-segment outputs, 1/3 duty 1/2 bias drive * Built-in 2-digit LED display driver (LC78602NE) Supports both dynamic display using digit scanning and static display. * Remote control input function (Sanyo format, 3-bit custom code) * Key matrix input for 8 keys -- Play/Pause key -- Stop/Clear key -- FF/F-scan key -- FB/B-scan key -- Repeat (All/One) key -- Random key -- Program (16 tracks) key -- Test key * Built-in EFM PLL circuit * Servo control * 16K RAM on chip * EFM data demodulation * Digital outputs * Interpolation, error detection and correction * 8fs digital filters * 1-bit D/A converter * Analog low-pass filter
Specifications
* Package: 64-pin QIP * Silicon gate CMOS structure * 5 V single-voltage power supply
SANYO Electric Co., Ltd. Semiconductor Business Headquarters Overseas Marketing Division
3
PRODUCT INFORMATION
Sample Availability
Samples of the LA9251M, LC78601E, and LC78602NE are available in August 1998; production quantities will be anticipated in October 1998
JULY 13, 1998
s Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. s SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein. s 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. s 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. s In the event that any and all SANYO products described or contained herein fall under strategic products (including services) controlled under the Foreign Exchange and Foreign Trade Control Law of Japan, such products must not be exported without obtaining export license from the Ministry of International Trade and Industry in accordance with the above law. s 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. s 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. s 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.
SANYO Electric Co., Ltd. Semiconductor Business Headquarters Overseas Marketing Division
90498/66
4

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