ESMT AD62551A User Manual

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ESMT AD62551A

USB controller with external Amplifier and Recording function

Features

z Compliant with USB Specification v1.1, and USB

2.0 full speed

z Support I

master mode

Sampling frequencies(Fs)：48kHz

z Support recording function
z Supports Win Me//2000/XP and MacOS
z True plug-and-play application, no driver is

required for basic USB speaker application

z Support volume/mute control with external button
z Built-in 5V to 3.3V regulator for internal device

2

S input and I2S output interface of

Functional Block Diagram

operation

z 12 MHz Crystal Input
z 32-pin LQFP(Pb free)

Description

AD62551A is a USB audio controller with I2S
interface and supports recording function. The
device also has an I

2

S output port allows other high performance

The I
audio device (i.e. AD8356A/AD8256A) to be
controlled by AD62551A.

2

S input port and I2S output port.

Elite Semiconductor Memory Technology Inc. Publication Date: Apr. 2007

Revision: 1.2 1/10

ESMT AD62551A

Pin Assignment

Pin Description

Pin Name Type Description Characteristics

1 MSDA I/O I2C’s SDA of Master mode Schmitt trigger TTL input buffer

2 MSCL O I2C’s SCL of master mode

3

4 SDATAO O

5 LRCIN O

6 BCLK O

7 SDATAI I Serial audio data input Schmitt trigger TTL input buffer

8 MCLK O Master clock(256xFs)

PDO

O

Power-down output (Note1)
Serial audio output (Note1)
L/R clock output(Fs) (Note1)
BCLK output(64xFs) (Note1)

9 GND P Ground

10 NC NC No connection

11 NC NC No connection

12 VDD P 5V supply voltage

Elite Semiconductor Memory Technology Inc. Publication Date: Apr. 2007

Revision: 1.2 2/10