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Sound system output is supplying 2x8W (10%THD) for stereo 8��speakers

Supported peripherals are:

1 RF input VHF I, VHF III, UHF @ 75Ohm(Common)

1 Side AV (CVBS, R/L_Audio)

2 SCART socket(Common)

1 YPbPr (Common)

1 Side S-Video(Common)

1 PC input(Common)

4 HDMI 1.3 input(Common)

1 Common interface(Common)

1 Optic S/PDIF output(Common)

1 Stereo audio input for PC(Common)

1 Subwoofer output(Common)

1 Headphone(Common)

2 USB(Common) 

1 Bluray/DVD(Optional)

1 Ethernet-RJ45 (Common)

1 External Touchpad(Common)

FT 2112/3/8/9 are newly developed Half-NIM modules designed for both digital 

(DVB-T / T2 and DTMB for terrestrial China) and analog TV reception in compliance with 

the European ATV standards for analogue, as well as with the terrestrial standard ETS 300 

744 for DVB-T and the new terrestrial standard ETS 302 755 for DVB-T2. It consists of a 3-

band RF tuner, which receives RF signal and down-converts it to an IF frequency of 36MHz 

for digital and 38.9MHz for analog IF. The analogue IF output can directly drive a SAW 

filter. A digital IF Stage, which consists of one SAW filter & gain-controllable IF that offers a 

sufficient output level to be connected directly to an A/D converter.

In active antenna option, the following circuit are used. ANT_CTRL pin is controlled by 

microcontroller. If ANT_CTRL is low, ANT_PWR will be low. If ANT_CTRL is high, 

ANT_PWR will be high. OVER_CUR_DETECT pin is a monitor for short circuit in antenna. 

OVER_CUR_DETECT is low, ANT_CTRL will be low, so ANT_PWR will be low. Finally, 

short circuit protection is done by circuits and microcontroller. 

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• Digital DVB-T T2, DTMB & analogue (48.25MHz to 863.25MHz) reception 
• Single 5V supply voltage only 
• Built-in 5-33V DC-DC converter 
• Single power supply to the RF tuner & IF VGA amplifier section  
• Bus Control switch-able RF AGC function: 
a) Wide Band AGC for optimum strong signal performance 
b) Conventional AGC for optimum analog reception 
• RF AGC information via I2C Bus 
• Tuner power standby mode via I2C Bus 
• Small size (56 mm x 29 mm x 10 mm) 
• I2C (SDA & SCL) bus control interface 
• ROHS compliant

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17MB70 uses TPA 3110 15-W filter-free stereo Class-D audio power amplifier  for main 

audio output. The TPA3110D2 is a 15-W (per channel) efficient, Class-D audio power 

amplifier for driving bridged-tied stereo speakers. Advanced EMI Suppression  Technology 

enables the use of inexpensive ferrite bead filters at the outputs while meeting EMC 

requirements. SpeakerGuard™ speaker protection circuitry includes an adjustable power 

limiter and a DC detection circuit. The adjustable power limiter allows the user to set a 

"virtual" voltage rail lower than the chip supply to limit the amount of current through the 

speaker. The DC detect circuit measures the frequency and amplitude of the PWM signal and

shuts off the output stage if the input capacitors are damaged or shorts exist on the inputs.

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The TPA3110D2 can drive stereo speakers as low as 4 ���������������������y of the 

TPA3110D2, 90%, eliminates the need for an external heat sink when playing music. The 

outputs are also fully protected against shorts to GND, VCC, and output-to-output. The short-

circuit protection and thermal protection includes an auto-recovery feature.

• 15-W/ch into an 8-������������������������������-V Supply
• 10-W/ch into 8-��������������������������� 13-V Supply
• 30-W into a 4-����������������������������������-V Supply
• 90% Efficient Class-D Operation Eliminates Need for Heat Sinks
• Wide Supply Voltage Range Allows Operation from 8 V to 26 V
• Filter-Free Operation
• SpeakerGuard™ Speaker Protection Includes Adjustable Power Limiter plus DC Protection
• Flow Through Pin Out Facilitates Easy Board Layout
• Robust Pin-to-Pin Short Circuit Protection and Thermal Protection with Auto Recovery 

Option
• Excellent THD+N / Pop-Free Performance
• Four Selectable, Fixed Gain Settings
• Differential Inputs