Datasheet
MAX9867 Evaluation Kit
Evaluates: MAX9867
4 ______________________________________________________________________________________
Quick Start
Recommended Equipment
• MAX9867 EV kit (USB A-to-mini-B cable included)
• User-supplied Windows 2000, Windows XP, or
Windows Vista PC with a spare USB port
• Pair of headphones (16I or greater)
• Two single-ended analog audio sources
• Digital audio equipment with two TOSLINK optical
cables
Refer to the MAX9867 IC data sheet while using this EV
kit for detailed descriptions of the codec’s features.
Note: In the following sections, software-related items
are identified by bolding. Text in bold refers to items
directly from the EV kit software. Text in bold and under-
lined refers to items from the Windows operating system.
Procedure
The MAX9867 EV kit is fully assembled and tested.
Follow the steps below to verify board operation before
exercising the full features of the MAX9867:
1) Verify that all the jumpers are set in their default
positions, as shown in Table 1.
2) Connect one TOSLINK optical cable between the
digital audio equipment input and the J5 module on
the EV kit board.
3) Connect the other TOSLINK optical cable between
the digital audio equipment output and the J6 mod-
ule on the EV kit board.
4) Connect one analog audio source to the MICLP
and MICLN pads on the EV kit board. Connect the
MICLN pad to GND for single-ended microphone
input.
5) Connect the other analog audio source to the MICRP
and MICRN pads on the EV kit board. Connect the
MICRN to GND for single-ended microphone input.
6) Connect one analog audio source to the J1 RCA
jack on the EV kit board.
7) Connect the other analog audio source to the J2
RCA jack on the EV kit board.
8) Connect the headphone to the J4 headphone jack
on the EV kit board.
9) Set the digital audio equipment audio output and
input sampling frequency to 48kHz.
10) Enable the digital audio equipment input and output.
11) Enable the analog audio sources.
12) Visit www.maxim-ic.com/evkitsoftware to down-
load the latest version of the EV kit software,
9867Rxx.ZIP.
13) Install the MAX9867 evaluation software on your
computer by running the INSTALL.EXE program.
The program files are copied and icons are created
in the Windows Start menu.
14) Connect the USB cable from the PC to the EV kit
board. A New Hardware Found window pops up
when installing the USB driver for the first time.
If a window is not seen that is similar to the one
described above after 30s, remove the USB cable
from the board and reconnect it. Administrator privi-
leges are required to install the USB device driver
on Windows.
15) 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\MAX9867 (default installation
directory) using the Browse button. During device
driver installation, Windows may show a warning
message indicating that the device driver Maxim
uses does not contain a digital signature. This is
not an error condition and it is safe to proceed
with installation. Refer to the USB_Driver_Help.PDF
document included with the software for additional
information.
16) Start the MAX9867 EV kit software by opening its
icon in the Start | Programs menu.
17) The EV kit software main window appears, as shown
in Figure 1. Verify that the message MAX9867:
Connected is displayed on the status bar at the bot-
tom of the software’s main window.
18) In the Clock Configuration group box, press the
Configure button.
19) In the MCLK Sources group box, click on the
Recovered Master Clock radio button.
20) Click on the DAC and Headphone Outputs tab.
In the Headphone Output Mode drop-down list,
select Stereo OCL.
21) Click on the Mic and Line Inputs tab. In the Line
Inputs group box, check the Enable Left Line In,
Enable Right Line In, Mute Left Line In, and Mute
Right Line In checkboxes. Muting the input does
not prevent the input from routing to the ADCs.
22) Click on the Filters tab. In the Codec Filtering
Mode drop-down list, select Audio (FIR).