ASAHI KASEI

[AK4529]

MS0082-E-00

2001/3

- 1 -

GENERAL DESCRIPTION

The AK4529 is a single chip CODEC that includes two channels of ADC and eight channels of DAC. The
ADC outputs 24bit data and the DAC accepts up to 24bit input data. The ADC has the Enhanced Dual Bit
architecture with wide dynamic range. The DAC introduces the new developed Advanced Multi-Bit
architecture, and achieves wider dynamic range and lower outband noise. An auxiliary digital audio input
interface maybe used instead of the ADC for passing audio data to the primary audio output port. Control
may be set directly by pins or programmed through a separate serial interface.

The AK4529 has a dynamic range of 102dB for ADC, 106dB for DAC and is well suited for digital surround
for home theater and car audio. An AC-3 system can be built with a IEC60958(SPDIF) receiver such as
the AK4112A. The AK4529 is available in a small 44pin LQFP package which will reduce system space.

*AC-3 is a trademark of Dolby Laboratories.

FEATURES

2ch 24bit ADC

- 64x Oversampling
- Sampling Rate up to 96kHz

- Linear Phase Digital Anti-Alias Filter

- Single-Ended Input
- S/(N+D): 92dB

- Dynamic Range, S/N: 102dB

- Digital HPF for offset cancellation
- I/F format: MSB justified, I

S or TDM

- Overflow flag

8ch 24bit DAC

- 128x Oversampling
- Sampling Rate up to 96kHz

- 24bit 8 times Digital Filter

- Single-Ended Outputs
- On-chip Switched-Capacitor Filter

- S/(N+D): 90dB

- Dynamic Range, S/N: 106dB
- I/F format: MSB justified, LSB justified(20bit,24bit), I

S or TDM

- Individual channel digital volume with 256 levels and 0.5dB step

- Soft mute
- De-emphasis for 32kHz, 44.1kHz and 48kHz

- Zero Detect Function

High Jitter Tolerance

TTL Level Digital I/F

3-wire Serial and I

C Bus �P I/F for mode setting

Master clock:256fs, 384fs or 512fs for fs=32kHz to 48kHz

128fs, 192fs or 256fs for fs=64kHz to 96kHz

Power Supply: 4.5 to 5.5V

Power Supply for output buffer: 2.7 to 5.5V

Small 44pin LQFP

High Performance Multi-channel Audio CODEC

AK4529

ASAHI KASEI

[AK4529]

MS0082-E-00

2001/3

- 2 -

Block Diagram

Audio

I/F

LPF

DAC

DATT

LPF

DAC

DATT

LPF

DAC

DATT

LPF

DAC

DATT

LPF

DAC

DATT

LOUT1

ROUT1

LOUT2

ROUT2

LOUT3

ROUT3

DAC

DATT

AK4529

ADC

HPF

ADC

HPF

RIN

LIN

LRCK

BICK

SDOUT1

SDOUT2
SDOUT3

AC3

SDIN

MCKO

LRCK

BICK

XTI

XTO

DIR

SDTO

AK4112A

RX4

RX3

RX2

RX1

LRCK

BICK

SDTI1
SDTI2
SDTI3

DAUX

SDOS

MCLK

LRCK

BICK

SDOUT

SDIN1
SDIN2
SDIN3

MCLK

SDTO

Format

Converter

SDOUT4

SDTI4

SDIN4

LPF

DAC

DATT

LPF

DAC

DATT

LOUT4

ROUT4

Block Diagram (DIR and AC-3 DSP are external parts)

ASAHI KASEI

[AK4529]

MS0082-E-00

2001/3

- 3 -

Ordering Guide

AK4529VQ

-40

+85

�

44pin LQFP(0.8mm pitch)

AKD4529

Evaluation Board for AK4529

Pin Layout

SDOS

TDM

I2C

SMUTE

BICK

LRCK

SDTI1

SDTI2

SDTI3

SDTO

DAUX

DFS

LOOP0/SDA/CDTI

DIF1/SCL/CCLK

MCLK

DZF1

AVSS

AVDD

VREFH

VCOM

SDTI4

DZFE

TVDD

DVDD

DVSS

TST

CAD1

CAD0

LOUT4

ROUT4

DZF2/OVF

RIN

LIN

ROUT1

LOUT1

ROUT2

LOUT2

ROUT3

LOUT3

AK4529VQ

Top View

PDN

DIF0/CSN

P/S

ASAHI KASEI

[AK4529]

MS0082-E-00

2001/3

- 4 -

Compatibility with AK4527B

1. Functions

Functions

AK4527B

AK4529

DAC channel

6ch

8ch

ADC

Full-differential input
(with single-ended use capability)

Single-ended input

DATT transition time

7424/fs (fixed)

7424/fs, 1024/fs or 256/fs

C bus auto increment

Not available

Available

TDM I/F format

Not available

Available

2. Pin Configuration

pin#

AK4527

AK4529

SDTI4

CAD1

CAD0

CAD1

LOUT4

CAD0

ROUT4

LIN-

LIN+

RIN-

LIN

RIN+

RIN

LOOP1

TDM

3. Register

Addr

Changed items

00H

TDM (TDM I/F format mode) is added.

08H

DEMD1-0 (DAC4 De-emphasis) are added.

09H

ATS1-0 (DATT transition time) are added.

0AH

DZFM3 (Zero detection mode) is added.

0BH

ATT7-0 (LOUT4 output volume control) are added.

0CH

ATT7-0 (ROUT4 output volume control) are added.

ASAHI KASEI

[AK4529]

MS0082-E-00

2001/3

- 5 -

PIN/FUNCTION

No.

Pin Name

I/O

Function

SDOS

SDTO Source Select Pin (Note 1)

"L": Internal ADC output, "H": DAUX input
SDOS pin should be set to "L" when TDM= "1".

I2C

Control Mode Select Pin

"L": 3-wire Serial, "H": I

C Bus

SMUTE

Soft Mute Pin (Note 1)

When this pin goes to "H", soft mute cycle is initialized.
When returning to "L", the output mute releases.

BICK

Audio Serial Data Clock Pin

LRCK

Input Channel Clock Pin

SDTI1

DAC1 Audio Serial Data Input Pin

SDTI2

DAC2 Audio Serial Data Input Pin

SDTI3

DAC3 Audio Serial Data Input Pin

SDTO

Audio Serial Data Output Pin

DAUX

AUX Audio Serial Data Input Pin

DFS

Double Speed Sampling Mode Pin (Note 1)

"L": Normal Speed, "H": Double Speed

SDTI4

DAC4 Audio Serial Data Input Pin

DZFE

Zero Input Detect Enable Pin

"L": mode 7 (disable) at parallel mode,

zero detect mode is selectable by DZFM3-0 bits at serial mode

"H": mode 0 (DZF1 is AND of all eight channels)

TVDD

Output Buffer Power Supply Pin, 2.7V

5.5V

DVDD

Digital Power Supply Pin, 4.5V

5.5V

DVSS

Digital Ground Pin, 0V

PDN

Power-Down & Reset Pin

When "L", the AK4529 is powered-down and the control registers are reset to default
state. If the state of P/S or CAD0-1 changes, then the AK4529 must be reset by PDN.

TST

Test Pin

This pin should be connected to DVSS.

CAD1

Chip Address 1 Pin

CAD0

Chip Address 0 Pin

LOUT4

DAC4 Lch Analog Output Pin

ROUT4

DAC4 Rch Analog Output Pin

Электронный компонент: AK4529VQ