CC2564MODACMOG datasheet(27/68 Pages) TI2

27 / 68 page

CC2564MODN, CC2564MODA

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SWRS160E – FEBRUARY 2014 – REVISED JANUARY 2017

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Product Folder Links: CC2564MODN CC2564MODA

Detailed Description

(1)

Other settings: Block length = 16; allocation method = loudness; subbands = 8.

5.9.2

Assisted A2DP

The A2DP enables wireless transmission of high-quality mono or stereo audio between two devices.

A2DP defines two roles:

•

A2DP source is the transmitter of the audio stream.

•

A2DP sink is the receiver of the audio stream.

A typical use case streams music from a tablet, phone, or PC (the A2DP source) to headphones or

speakers (the A2DP sink). This section describes the architecture of these roles and compares them with

the corresponding assisted-A2DP architecture. To use the air bandwidth efficiently, the audio data must be

compressed in a proper format. The A2DP mandates support of the SBC scheme. Other audio coding

algorithms can be used; however, both Bluetooth devices must support the same coding scheme. SBC is

the only coding scheme spread out in all A2DP Bluetooth devices, and thus the only coding scheme

supported in the assisted A2DP modes. Table 5-4 lists the recommended parameters for the SBC scheme

in the assisted A2DP modes.

Table 5-4. Recommended Parameters for the SBC Scheme in Assisted A2DP Modes

SBC

ENCODER

SETTINGS(1)

MID QUALITY

HIGH QUALITY

MONO

JOINT STEREO

MONO

JOINT STEREO

Sampling

frequency

(kHz)

44.1

Bitpool value

Resulting

frame length

(bytes)

119

115

Resulting bit

rate (Kbps)

127

132

229

237

193

198

328

345

The SBC scheme supports a wide variety of configurations to adjust the audio quality. Table 5-5 through

Table 5-12 list the supported SBC capabilities in the assisted A2DP modes.

Table 5-5. Channel Modes

CHANNEL MODE

STATUS

Mono

Supported

Stereo

Supported

Joint stereo

Supported

Dual channel

Supported

Table 5-6. Sampling Frequency

SAMPLING FREQUENCY (kHz)

STATUS

Supported

44.1

Supported

Table 5-7. Block Length

BLOCK LENGTH

STATUS

Supported

CC2564MODACMOG Datasheet(PDF) 27 Page - Texas Instruments

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