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MAX98089 Evaluation Kit (TQFN)

Evaluates: MAX98089 (TQFN)

General Description

The MAX98089 evaluation kit (TQFN) (EV kit) is a fully

assembled and tested circuit board that evaluates the

MAX98089 (TQFN) audio codec. The IC is an integrat-

ed audio codec including microphone amplifiers, line

amplifiers, an earpiece amplifier, stereo Class D amplifi-

ers, stereo DirectDrive

headphone amplifiers, and digi-

tal signal processing. The EV kit also includes Windows

-, Windows Vista

-, and Windows

7-compatible

software that provides a simple graphical user interface

(GUI) for exercising the features of the IC.

The EV kit provides access to all analog and digital

inputs/outputs on the IC. To enable easy connection to a

wide range of audio sources, audio devices are included

to convert both USB data and S/PDIF data to I

The EV kit integrates a MAXQ2000 microcontroller to

enable I

C communication with devices on the EV kit.

The EV kit software, running on a Windows PC, commu-

nicates with the EV kit over a standard USB port. The EV

kit software provides an intuitive interface to exercise the

functions of the IC.

The EV kit comes with a MAX98089ETN+ installed.

Features

S 2.8V to 5.5V Single-Supply Operation

S Proven Audio PCB Layout

S On-Board USB-to-I

C Interface Circuit

S On-Board USB-to-I

S Converter

S On-Board S/PDIF Transceiver

S On-Board Clock Source

S On-Board Digital Microphone

S Evaluates the MAX98089ETN+ in a 56-pin

TQFN-EP Package

S Windows XP-, Windows Vista-, and Windows

7-Compatible Software

S Proven PCB Layout

S Fully Assembled and Tested

19-5983; Rev 0; 9/11

DirectDrive is a registered trademark of Maxim Integrated Products, Inc.

Windows, Windows XP, and Windows Vista are registered trademarks of Microsoft Corp.

Figure 1. Block Diagram

Ordering Information

#Denotes RoHS compliant.

DIGITAL

MIC INPUT

DIGITAL

MIC

DIGITAL

MIC

INPUT

POWER

STEREO ADC

USB OPTICAL USBOPTICAL

STEREO ADC

CONTROL

1.8V I

C I

S I

DIGITAL AUDIO

INTERFACE

FIXED-FUNCTION

DSP

DIGITAL AUDIO

INTERFACE

S/PDIF

TRANSCEIVER

USB TO I

MIC

INPUT

MIC/LINE

INPUT

LINE

INPUT

EARPIECE/

LINE OUTPUT

CLASS D

AMPLIFIER

CLASS D

AMPLIFIER

CLASS H

AMPLIFIER

CHARGE

PUMP

MAX98089

BYPASS

MICRO-

CONTROLLER

POWER

SUPPLY

2.8V TO 5.5V

PART TYPE

MAX98089EVKIT#TQFN EV Kit

Summary of content (22 pages)

PAGE 1
9-5983; Rev 0; 9/11 MAX98089 Evaluation Kit (TQFN) Features The MAX98089 evaluation kit (TQFN) (EV kit) is a fully assembled and tested circuit board that evaluates the MAX98089 (TQFN) audio codec. The IC is an integrated audio codec including microphone amplifiers, line amplifiers, an earpiece amplifier, stereo Class D amplifiers, stereo DirectDriveM headphone amplifiers, and digital signal processing.
PAGE 2
Evaluates: MAX98089 (TQFN) MAX98089 Evaluation Kit (TQFN) Component List DESIGNATION QTY DESCRIPTION 4 10FF Q20%, 6.3V X5R ceramic capacitors (0805) TDK C2012X5R0J106M C3, C10, C11, C21, C22, C27, C29, C35, C40, C42, C44–C47, C51 15 0.
PAGE 3
MAX98089 Evaluation Kit (TQFN) DESIGNATION QTY J12–J15 4 Red RCA jacks DESCRIPTION JU12 1 4-pin, 3-way header JU13, JU19 2 12-pin (3 x 4) headers DESIGNATION QTY R35, R36, R39, R41, R42, R43 DESCRIPTION 6 22I Q5% resistors (0402) R38 1 1MI Q5% resistor (0402) R50, R53 2 0I Q5% resistors (0603) R54, R55, R57, R58 4 2.2kI Q5% resistors (0402) U1 1 Stereo audio codec (56 TQFN-EP) Maxim MAX98089ETN+T 1 1.
PAGE 4
Evaluates: MAX98089 (TQFN) MAX98089 Evaluation Kit (TQFN) Component List (continued) DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 2 Dual SPDT switches (10 FDFN) Maxim MAX4906ELB+ Y5 1 Y2 1 13MHz crystal oscillator (2.5mm x 2.0mm) 6MHz crystal (HC49) Hong Kong X’tals SSL60000N1HK188F0-0 — 28 Shunts Y3 1 16MHz crystal (3.2mm x 2.5mm) — 1 PCB: MAX98089 EVALUATION KIT# (TQFN) Y4 1 12MHz crystal (3.2mm x 2.
PAGE 5
MAX98089 Evaluation Kit (TQFN) Required Equipment • MAX98089 EV kit (USB cables included) privileges are required to install the USB device driver on Windows. 7) Follow the directions of the Found New Hardware window to install the USB device driver. Manually specify the location of the device driver to be C:\Program Files\MAX98089 (default installation directory) using the Browse button.
PAGE 6
Evaluates: MAX98089 (TQFN) MAX98089 Evaluation Kit (TQFN) Detailed Description of Software Graphical User Interface The MAX98089 EV kit software uses a block diagram interface to control all the functions of the MAX98089 audio codec. Click on blocks on the Block Diagram tab (Figure 2) to control various functions of the IC. Each block that represents multiple control options displays a dialog box containing all available controls for that block.
PAGE 7
MAX98089 Evaluation Kit (TQFN) Evaluates: MAX98089 (TQFN) Figure 3.
PAGE 8
Evaluates: MAX98089 (TQFN) MAX98089 Evaluation Kit (TQFN) Global Control Buttons Select Read All Registers to update the software settings with the register settings of the connected EV kit. This option is useful if the EV kit software is restarted without power cycling the EV kit. Press Reset to restore the EV kit to power-on default settings. Uncheck options that need not be reset. Select Write All Registers to download all software settings to the connected EV kit.
PAGE 9
MAX98089 Evaluation Kit (TQFN) When receiving S/PDIF data, the CS8427 outputs a recovered master clock that is exactly 256 x fS, where fS is the sample rate. This clock signal can be used to clock the IC. When transmitting S/PDIF data, the CS8427 requires a master-clock input. If S/PDIF data is also being received, the CS8427 uses this data to generate its own master clock. If S/PDIF data is not being received, then the CS8427 generates a master clock based on the LRCLK signal being output by the IC.
PAGE 10
Evaluates: MAX98089 (TQFN) MAX98089 Evaluation Kit (TQFN) Table 1. Jumper Selection (continued) JUMPER JU30 SHUNT POSITION 1-2 Open* JU32 JU34 JU35 JU36 JU37 JU40 JU41 JU42 1-2 Open* 1-2 Open* 1-2 Open* 1-2 Open* 1-2 Open* 1-2 Open* 1-2 Open* 1-2* Open DESCRIPTION Connects JACKSNS to MIC1 for jack detection; ensure that a shunt is installed on jumper JU40 for proper jack detection.
PAGE 11
MAX98089 Evaluation Kit (TQFN) JUMPER JU13 JU19 POSITION 1 POSITION 2 POSITION 3 GND BCLKS1 (IC) BCLK (S/PDIF) GND LRCLKS1 (IC) LRCLK (S/PDIF) GND SDINS1 (IC) DAC input (S/PDIF) GND SDOUTS1 (IC) ADC output (S/PDIF) GND BCLKS2 (IC) BCLK (USB audio) GND LRCLKS2 (IC) LRCLK (USB audio) GND SDINS2 (IC) DAC input (USB audio) GND SDOUTS2 (IC) ADC output (USB audio) Note: Default shunt position is between pins 2-3 for all rows.
PAGE 12
Evaluates: MAX98089 (TQFN) MAX98089 Evaluation Kit (TQFN) Figure 4a.
PAGE 13
MAX98089 Evaluation Kit (TQFN) Evaluates: MAX98089 (TQFN) Figure 4b.
PAGE 14
Evaluates: MAX98089 (TQFN) MAX98089 Evaluation Kit (TQFN) Figure 4c.
PAGE 15
MAX98089 Evaluation Kit (TQFN) Evaluates: MAX98089 (TQFN) Figure 4d.
PAGE 16
Evaluates: MAX98089 (TQFN) MAX98089 Evaluation Kit (TQFN) Figure 4e.
PAGE 17
MAX98089 Evaluation Kit (TQFN) Evaluates: MAX98089 (TQFN) 1.0” Figure 5.
PAGE 18
Evaluates: MAX98089 (TQFN) MAX98089 Evaluation Kit (TQFN) 1.0” Figure 6.
PAGE 19
MAX98089 Evaluation Kit (TQFN) Evaluates: MAX98089 (TQFN) 1.0” Figure 7.
PAGE 20
Evaluates: MAX98089 (TQFN) MAX98089 Evaluation Kit (TQFN) 1.0” Figure 8.
PAGE 21
MAX98089 Evaluation Kit (TQFN) Evaluates: MAX98089 (TQFN) 1.0” Figure 9.
PAGE 22
MAX98089 Evaluation Kit (TQFN) Evaluates: MAX98089 (TQFN) Revision History REVISION NUMBER REVISION DATE 0 9/11 DESCRIPTION Initial release PAGES CHANGED — Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.