Datasheet > STAC9753(3.3V)

STAC9753(3.3V)

更新时间： 2024-10-26 23:34:59

品牌	Logo	应用领域
其他 - ETC		解码器编解码器光电二极管
页数	文件大小	规格书
2页	186K
描述
STAC9752 (5V) and STAC9753 (3.3V) : Two-Channel. 20-Bit. AC’97 2.3 Codecs with Microphone and Jack Sensing C-Major? AC＇97 Revision 2.3 Codecs (pdf. 185Kb. 071602) AC＇97 rev 2.3 Audio Codecs with Internal Jack-Sense and Paging Registers.

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STAC9753(3.3V) 数据手册

PRODUCT INFORMATION

AC’97 Revision 2.3 Codecs

AC’97 rev 2.3 Audio Codecs with Internal Jack-Sense and Paging Registers

INTRODUCTION

The STAC9752/53 are the industry’s first AC’97 2.3 Audio Codecs for the PC and portable segment. Both

codes are 20-Bit AC’97 devices adhering to Intel’s newly released 2.3 specification. The new version adds

important usability features like integrated Jack-Sense and Paging Registers to the already rich feature set that

includes integrated headphone amplifier, SPDIF output,

and the Crystal elimination Circuit. The most important

aspect of AC’97 version 2.3 is the cost saving potential of

the Internal Jack Sense capability. The Internal Jack-

Sense can determine what has been plugged into the

audio connectors and alert end-users when they have

made a mistake. This helps the end-user get their

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system setup quickly, and it keep audio technical support

call costs down for the OEM. Right now the largest

support call item is audio setup … 2.3 codecs with

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Internal Jack-Sense can really help keep that cost down.

($40/hour for call support) x (15minutes per call) = $10 Savings

OEM cost savings from Internal Jack-Sense is the drive for AC’97 2.3

MARKET OPPORTUNITY

Audio has moved full force to the motherboard in the last year, especially with the introduction of 20-bit south

bridge controllers such as the 845 chipset from Intel. This is a very important development for SigmaTel’s line

of 20-bit codecs. With the STAC9752/53, and the soon to be announced 6-ch STAC9758/59, SPDIF output,

standard motherboards can now more easily become part of today’s home entertainment system with a full 6-

channels audio playback from the PC. Given the growing importance of multi-channel games, DVD playback

and home theater, the AC’97 2.3 Internal Jack-Sense codecs are becoming essential to help end-users set their

systems up for the first time. Every time someone calls the OEM for technical support, it costs the OEM

$40 per hour on lost profits. With average call times of 15 minutes, each call costs the OEM roughly $10

per confused end-user. The family of AC’97 2.3 parts from SigmaTel help eliminate the confusion, the poor

end-user experience, and the lost OEM profits.

AC97 REVISION 2.3 TECHNICAL FEATURES

The newly released AC’97 revision 2.3 specification has recently been upgraded with several new features

that greatly improve the end-user experience. These new features include Internal Jack-Sense that lets the PC

determine what type of device … such as speaker, headphones, and various microphones … is actually plugged

into the audio connectors. The headphone, line-out, and microphone all incorporate SigmaTel’s Internal

Jack-sense capability that does not require any external components. This means that SigmaTel’s Jack-

Sense works on existing MBs without any modifications. In addition to the Jack-Sense, the new AC’97 2.3

specification provides for Paging Registers that store key audio sub-system information like external amplifier

settings, gain, phase, and location of connectors. This type of information is very important to Microsoft in their

progress for improved business audio. Without this type of Analog Plug-n-Play information the key features of

business audio are very difficult to implement for voice record, speech recognition, and better use of the PC for

telephony. The standard GPIO Jack-Sense pins are still available for designs that have previously implemented

the older style mechanical approach to jack-sense that depended on special high-cost connectors with customer

7/16/2002

1 of 2

2-9752-PB2-1.0-0702

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与STAC9753(3.3V)相关器件

型号	品牌	获取价格	描述	数据表
STAC9753A	IDT	获取价格	AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNI
STAC9753AXNAED1XR	IDT	获取价格	Consumer Circuit, PQCC32
STAC9753AXNAEYYX	IDT	获取价格	AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNI
STAC9753AXNAEYYXR	IDT	获取价格	PCM Codec, 1-Func, 5 X 5 MM, 0.90 MM HEIGHT, ROHS COMPLIANT, MO-220VHHD-5, QFN-32
STAC9753AXTAED1X	IDT	获取价格	PCM Codec
STAC9753AXTAED1XR	IDT	获取价格	PCM Codec
STAC9753AXTAEYYX	IDT	获取价格	AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNI
STAC9753AXTAEYYXR	IDT	获取价格	PCM Codec, 1-Func, PQFP48, 7 X 7 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-48
STAC9753XXTAEB2X	IDT	获取价格	PCM Codec, 1-Func, PQFP48, 7 X 7 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-48
STAC9753XXTAEB2XR	IDT	获取价格	PCM Codec, 1-Func, PQFP48, 7 X 7 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-48

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