MAX97003EVKIT# Maxim Integrated, MAX97003EVKIT# Datasheet - Page 6

• Manufacturer Part Number: MAX97003EVKIT#
• Description: Audio IC Development Tools MAX97003 Eval Kit
• Manufacturer: Maxim Integrated
• Series: MAX97003r

Specifications of MAX97003EVKIT#

• Rohs: yes

Upon starting the program, the EV kit software automati-
cally searches for the USB interface circuit and then for
the IC device address. The EV kit enters the normal oper-
ating mode when the USB connection is detected and
has found the device address. The Enabled checkbox in
the Control Panel tab sheet enables the device opera-
tion. If the USB connection is not detected, the software
prompts the user to retry or enter the demo mode.
The EV kit software enters the demo mode when the USB
connection is not detected, or by selecting the Options
| Demo Mode menu item in the main window. When in
demo mode, all software communication to the EV kit
circuit is disabled; however, most of the software GUI is
functional. Demo mode allows the user to evaluate the
software without hardware connectivity. If the USB cable
is connected to the EV kit, but power is not applied to
PVDD, the EV kit GUI acts like it is in demo mode. In
such a case, the EV kit is connected to the PC through
the USB, and I
However, without power, the device does not acknowl-
edge the I
the Reset button to detect the presence of the device.
The Write All button writes the current settings to all the
registers on the GUI. The EV kit software GUI performs
I
Read All button changes the GUI settings to match the
device register settings. To change settings one time,
enter demo mode by selecting the Options | Demo
Mode menu item, change the GUI to the required set-
tings, exit demo mode by selecting Options | Demo
Mode, and then press the Write All button. To obtain
the device settings, press the Read All button and the
GUI is updated to reflect the current register states of
the device. In addition, the EV kit software can be set to
automatically read back the device registers every 1s by
selecting the Options | Auto I2C Read menu item. The
Reset button clears the EV kit software GUI and repro-
grams the device to the default values.
The EV kit software Interface group box displays the
device’s I2C Device Address, Register Address, and
the last Data Sent. The MAX97003’s I
is internally set to 0x9A.
The EV kit software MAX97003 Master Controls group
box provides checkboxes to control the device’s Enabled,
Enhanced Volume Smoothing, Volume Slewing, and
Zero Crossing Detection.
2
C write commands as changes occur on the GUI. The
2
C commands. When power is applied, press
2
C commands can be sent to the device.
_________________________________________________________________ Maxim Integrated Products 6
MAX97003 Master Controls
Write All/Read All/Reset
Software Startup
2
C device address
I
2
Demo Mode
C Interface
The Input Configuration group box configures the
device’s input channels A and B for Stereo (single-
ended) or Mono (differential). The Input PreAmp Gain
group box selects the gain values for the input channels.
The input preamp gains range from -3dB to +12dB in
1.5dB steps.
The Headphone Amplifiers group box configures the
device’s headphone power supply, headphone output
gain, input channel selection, enables, mutes, volume
controls, and expander settings. The Fixed Voltage
Charge Pump Mode checkbox selects between Class H
and fixed supply mode to power the headphones. When
the Fixed Voltage Charge Pump Mode checkbox is
checked, the Charge Pump Output Select radio group
box is enabled, allowing HPVDD/HPVSS to be set to
either Q1.8V or Q0.9V. The HP Output Gain ranges from
0dB to 6dB in 2dB steps. The HPL Mixer and HPR Mixer
group boxes select the input channels to the headphone
amplifiers. There are four input channels (INA1, INA2,
INB1, and INB2) that can be connected into each head-
phone amplifier. The HP Expander group box configures
the HP Expansion Ratio, HP Expander Attack Time,
and HP Expander Threshold. The Lock L&R HP Vol
checkbox locks the Right Headphone Volume track bar/
edit box to the Left Headphone Volume track bar/edit
box when it is checked.
The Speaker Amplifier group box configures the
device’s speaker output modulation, output gain, input
channel selection, enable, mute, volume control, expand-
er, dynamic range compressor, distortion limiter settings,
and the speaker low-power mode. The Fixed Class D
Freq Enable checkbox selects between spread-spec-
trum and fixed-frequency modulation for the speaker out-
put. The SPK Output Gain ranges from +12dB to +24dB
in 4dB steps. The SPK Mixer group box selects the input
channels to the speaker amplifier. There are four input
channels (INA1, INA2, INB1, and INB2) that can be con-
nected into the speaker amplifier. The SPK Expander
group box configures the SPK Expansion Ratio, SPK
Expander Attack Time, and SPK Expander Threshold.
The Dynamic Range Compressor (DRC) group box
configures the DRC Enable and Compression Ratio,
DRC Attack Time Constant, DRC Release Time, and
DRC Compression Threshold Level. The Distortion
Limiter group box is enabled when the Zero Crossing
Detection checkbox is unchecked. The Speaker Low-
Power Mode group box sets the SPK Low-Power Mode
Volume Threshold and selects the Class D output
mode. The Class D Output is selectable between Active
continuously or Active if the speaker volume setting
is above SLPTH (speaker low-power threshold).
Evaluates: MAX97003
Input Configuration/Input PreAmp Gain
Headphone Amplifiers
Speaker Amplifier