Bluetooth Module for 3D TV
Version 1.0
Samsung Electronics
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3. Operational Description
Samsung BT module is the Bluetooth RF Module that acts as a communication controller for users of a
wireless device to connect to 3D_ TV. This uses Bluetooth standard IEEE 802.15.1/1a with 79 channels
(2402MHz~2480MHz, Space 1MHz)
- Time base of the RF frequency
For Zero IF and RF frequency, a crystal(26MHz) is a clock reference.
- Synthesizer
Synthesizer inside Transceiver. Internal voltage controlled oscillator (VCO) provides the desired LO
signal base on the phase-locked loop (PLL) with a relatively wide tuning range for this application.
- Transmission
Base-band Processing (BBP) IC has FHSS(frequency Hopping Spread Spectrum) and
(2FSK/DQPSK/8DPSK) modulation function, it provides transmission data rate are 1, 2(EDR), 3(EDR)
Mbps, now this module is adopted 2FSK and data rate 1MHz, Digital data signal will be converted to
analog (TX IQ) signals through DAC in
BBP
IC, TX IQ pass through to low pass filter. TX I/Q signal
use direct conversion (zero-IF) architecture converter to generate carrier frequency signal.
Transceiver
IC and internal PA magnify output power.
- Receiver
Reverse direction isolation of LNA inside Transceiver IC suppresses unwanted radiation. Then RF
signal will be directly down to IF signal (RX IQ) and high frequency spurious emissions are suppressed by
LPF. At last RX IQ signal will be demodulated digital data.
- Base band Processing
Channel selection is controlled by
BBP
IC to support data modulation:
0.5BT Gaussian-filtered 2FSK : 1Mbps
0.4 BT pi/4 DQPSK : 2Mbps available
0.4 BT 8DPSK : 3Mbps available
- Power Control Level
The interated PA for this device can transmit at a maximum power of +4dBm for class 2 operation.
- Transmit/Receive Switch
DUT has
Transmit/Receive Switch. End user can’t select any power setting.
4. Application for 3D_TV
This module is 7pin connector for connection with 3D_TV, The main interface is USB(3,4pin ,USB D+,D-) and
6,7pins are used as 3D Sink signal input/output.
IF the signal of 3D_TV comes from 3D_TV’s main CPU, the signal is modulated at the baseband of RF transceiver and
transmitted to 3D_Glass, via RF Block.
