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BK3266SO16A Datasheet(PDF) 13 Page - Beken Corporation

Part # BK3266SO16A
Description  Bluetooth Audio SoC
Download  28 Pages
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Manufacturer  BEKEN [Beken Corporation]
Direct Link  http://www.bekencorp.com/en
Logo BEKEN - Beken Corporation

BK3266SO16A Datasheet(HTML) 13 Page - Beken Corporation

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BK3266 Datasheet
v 0.5
© 2017 Beken Corporation
Proprietary and Confidential
Page 13 of 28
on-chip balun which transforms the single-ended RF signal from the antenna
through pin, RFP_BT, into an internal differential balanced signal for the low
noise amplifier (LNA). On the transmit side, the differential outputs of the power
amplifier (PA) are combined and transformed to a single-ended output using the
same on-chip balun thus enabling only one RF pin connection to the antenna for
both transmit and receive operations. The device is able to output +8 dBm of
transmit output power allowing users to develop a class 2 (+4 dBm) device with
small printed circuit board (PCB) antenna. The frequency synthesizer is fully
integrated and does not require any external components.
3.4.
Bluetooth Baseband
The BK3266 Bluetooth baseband implements the Bluetooth version 4.2
Enhanced Data Rate (EDR) modem providing Basic Data Rate (BDR) 1 Mbps as
well as the enhanced 2 Mbps, and 3 Mbps data rates.
Data Rate
Modulation
Bits/Symbol
BDR: 1 Mbps
GFSK
1
EDR: 2 Mbps
π/4 DQPSK
2
EDR: 3 Mbps
8 DPSK
3
Table 4. BK3266 Bluetooth Modulation Formats
The Bluetooth baseband utilizes a combination of both hardware blocks and
firmware for the frequency hopping sequence generator, access code generation,
detection, and correlation, encryption and decryption for security, forward error
correction, 16-bit CRC, packet construction, and Bluetooth clocks and timers to
optimize for power consumption and user programmability.
3.5.
Audio Peripherals
The BK3266 comes with a rich set of audio peripherals to enhance the Bluetooth
listening experience. The chip includes a 5-band digital equalizer, 96 dB signal-
to-noise ratio (SNR) stereo analog-to-digital converter (ADC) and digital-to-
analog converter (DAC), microphone input amplifier and bias, line-in input, and
stereo audio left and right (L/R) outputs.
3.5.1.
5 – Band Digital Equalizer
A dedicated 5-band digital equalizer is implemented prior to digital-to-analog
conversion to give users the option of customizing the frequency response of the
audio output. The equalizer is implemented in hardware to reduce overall chip
power consumption. The 5-band equalizer is easily configured using the BK3266


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