ICE1232 IC Ensemble, ICE1232 Datasheet

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ICE1232

Manufacturer Part Number

ICE1232

Description

ac 97 2.1 VSR Audio Codec With 3D

Manufacturer

IC Ensemble

Datasheet

1.ICE1232.pdf (28 pages)

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Price

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Bonase Electronics (HK) Co., Limited

Bonase Electronics (HK) Co., Limited

Part Number:

ICE1232

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INFINEON

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Meier Automation Equipment Co., Limited

Meier Automation Equipment Co., Limited

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ICE1232

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ICE

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Features

• AC’97 2.1 compliant codec

• 18-bit stereo full duplex

• VSR (Variable Sampling Rate), 1Hz resolution

• 3D stereo expansion for simulated surround

• 4 stereo analog line-level inputs

• 2 mono analog line-level inputs

• MIC level input switchable from two sources

• Second line-level output with volume control

• Multiple codec mode

• External Audio Amplifier Control

• Power management support

• Low Power consumption mode

• Exceeds Microsoft® PC’9x requirements

• 3.3V, 5V or split analog/digital power supply

• 48-pin TQFP or LQFP package

Rev. 1.5, 1/10/00

SDATA_OUT

SDATA_IN

PC_BEEP

XTL_OUT

BIT_CLK

RESET#

PHONE

XTL_IN

VIDEO

SYNC

MIC1

MIC2

LINE

AUX

CD

M

U

X

Interface

Digital

AC’97

OSC

SRC

+20dB

VOL

codec

DAC

Figure 1. Functional Block Diagram

VOL

VOL

VOL

VOL

VOL

VOL

VOL

VOL

MUTE

MUTE

MUTE

MUTE

MUTE

MUTE

MUTE

MUTE

Description

IC Ensemble’s ICE1232

conforms to the AC’97 2.1 specification with

excellent analog performance. The ICE1232

integrates a sophisticated Sample Rate Converter

that can be adjusted in 1Hz increments. This

makes it ideal for host-based signal processing

motherboard applications which lacks a hardware

accelerator. The mixer circuitry integrates a stereo

enhancement to provide a pleasing 3D surround

sound effect for stereo media. This codec is

designed with aggressive power management to

achieve ultra low power consumption when used

with a 3.3V supply. The primary applications for

this part are desktop and portable personal

computers multimedia subsystems. However, it is

suitable for any system requiring audio domain

conversion, mixing and volume control at

competitive prices.

AC‘97 2.1 VSR Audio Codec with 3D

3D

PCM IN

M

U

X

M

U

X

MASTER

VOLUME

INPUT

SRC

TM

MASTER

VOLUME

VOLUME

MASTER

VOLUME

18-bit

MONO

ADC

ICE1232

Preliminary

audio codec

LINE_OUT

LNLVL_OUT

MONO_OUT

1

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