Microchip Technology MEB II, Руководство пользователя

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Multimedia Expansion Board II (MEB II) User’s Guide
DS70005148B-page 26
©
2013-2014 Microchip Technology Inc.
2.1.6 24-bit Audio Codec
The MEB II includes an Asahi Kasei AKM4953A 24-bit audio codec for high-quality
audio, as shown in
Figure 2-6 . The AK4953A is low power consumption 24-bit stereo
codec with a microphone, headphone, and speaker amplifiers, which is suitable for
portable applications with a recording/playback function. The I2C interface of the audio
codec is used by the PIC32 device for control and the I
2
S interface is used for audio.
FIGURE 2-6: 24-BIT AUDIO CODEC
2.1.7 Bluetooth
®
HCI Transceiver
The Flaircomm BTM805 Bluetooth
®
Host Control Interface (HCI) module is included in
the MEB II, adding Bluetooth capability, as shown in Figure 2-7 . The PIC32
microcontroller communicates with the Bluetooth module through the UART interface.
FIGURE 2-7: BLUETOOTH
®
TRANSCEIVER
Note: In an application, since Bluetooth and microSD share the same pins on the
board, only one can be used at any given time.