MAX9853 Maxim Integrated Products, MAX9853 Datasheet - Page 65

• Manufacturer Part Number: MAX9853
• Description: (MAX9851 / MAX9853) Stereo Audio CODECs
• Manufacturer: Maxim Integrated Products

Typical operation often requires audio playback of a
digital source. Table 43 lists an example of this configu-
ration and Table 44 lists the corresponding register set-
tings in the proper programming sequence.
An example configuration is to supply I
audio sampled at 48kHz to the secondary digital audio
interface (S2). The audio is converted to analog and
amplified by the speaker amplifiers of the MAX9851.
This configuration will be set to run from a 13MHz MCLK
and operate the MAX9851 as the digital audio master.
Table 42. I
(continued)
Stereo Audio CODECs with Microphone, DirectDrive
REGISTER (hex)
Headphones, Speaker Amplifiers, or Line Outputs
0x1A
0x1B
0x15
0x16
0x17
0x18
0x19
0x03
2
C Register Settings for Voiceband Playback and Record Voiceband Mode
______________________________________________________________________________________
Stereo Audio Playback with the
MAX9851 Speaker Amplifier
VALUE (hex)
0xCA
0x00
0x00
0x00
0x67
0x00
0xD5
0xA2
2
S stereo digital
No configuration necessary
No configuration necessary
No configuration necessary
Enable volume smoothing and zero-crossing detection and select the
receiver amplifier for output
No configuration necessary
Enable the MAX9851/MAX9853 and configure the charge-pump circuitry
to run from MCLK
Enable the left DAC, left ADC, and microphone interface
Enable primary digital audio interface and configure for full-duplex
operation at 8kHz voice mode
Table 43. Example Stereo Audio
Playback Configuration
•
•
•
•
•
operating in master mode
13MHz MCLK
48kHz sample rate for incoming data
DAC enabled for stereo data
Digital audio input on the secondary digital audio interface
Audio output on the speaker amplifier
DESCRIPTION
65