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HMP9701CN Datasheet

  • HMP9701CN

  • AC’97 Audio Codec

  • 20頁

  • INTERSIL   INTERSIL

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Semiconductor
November 1998
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HMP9701
AC鈥?7 Audio Codec
Features
鈥?Fully Compatible with the Audio Codec 鈥?7 Standard
鈥?High Fidelity 16-Bit
危鈭?/div>
Converters
- DAC SNR > 80dB
- ADC SNR > 80dB
鈥?Additional A/D for Microphone Pass-Through
鈥?AC Link Serial Interface Compatible with AC鈥?7 Digital
Controllers
鈥?Fixed 48kHz Sampling Rate
鈥?6 Channel Input Mixer
鈥?Programmable Powerdown Modes
鈥?48 Lead TQFP Package
鈥?Single +5V Supply
Description
The HMP9701 is the next generation PC based audio codec
solution. The HMP9701 is fully compatible to the new AC鈥?7
standard and, as such, interfaces to any AC鈥?7 compliant digital
controller. The HMP9701 offers the designer a solution to sat-
isfy the demand for 鏗俥xibility and improved High Fidelity sound
in a PC environment. As part of the AC鈥?7 PC audio standard
architecture, the HMP9701 helps pave the way for PC鈥?7 com-
pliant desktop, portable and entertainment PCs with a cost
effective high-quality audio solution.
As the analog front end of the AC鈥?7 chipset, the HMP9701
accepts line level audio inputs from seven different sources and
converts the analog audio to 16-bit digital streams of either ste-
reo or mono data. The 48 Kss data is transmitted to the control-
ler via the AC鈥?7 standard 鏗乿e wire interface. The controller
sends digital audio data to the HMP9701 to be converted to
analog stereo or monaural line output using two DACs.
We include an additional ADC to be used for Acoustic Echo
Canceling needed for video conferencing applications. This
ADC has a dedicated microphone input. It has the same high
quality performance as the stereo ADCs. The small 48 lead
TQFP (Thin 1.5mm and 7mm x 7mm footprint Quad Flat Pack-
age) makes it easy to locate the analog codec close to the ana-
log sources. Thus, reducing noise and lowering the cost of
implementation.
Applications
鈥?Multimedia PC Applications
- Desk Top PCs
- Notebook PCs
- Sound Cards
- Motherboards
鈥?Video Conferencing
鈥?Speaker Phones
Ordering Information
Page
PART NUMBER
HMP9701CN
HMP9701EVAL2
TEMP.
RANGE (
o
C)
0 to 70
PACKAGE
48 Ld TQFP
鈥?/div>
PKG. NO.
Q48.7x7A
Table of Contents
Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Serial Digital Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Control Register Description . . . . . . . . . . . . . . . . . . . . . . . . 8
Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
AC and DC Electrical Speci鏗乧ations . . . . . . . . . . . . . . . . . 13
Typical Performance Curves
ADC/DAC Frequency Responses . . . . . . . . . . . . . . . . . 17
AC Timing Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
PCI Bus Evaluation Board (Includes codec)
鈥?/div>
TQFP is also known as PQFP and MQFP.
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
漏
Harris Corporation 1998
File Number
4287.4
1

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