2
Tuner (TU3)
A horizontal mounted and Digital Half-Nim tuner is used in the product, which covers 3
Bands (From 48 MHz to 862 MHz for COFDM, from 45.25 MHz to 863.25 MHz for CCIR
channels). The tuning is available through the digitally controlled I2C bus (PLL).
In the active antenna option, the following circuits 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.
2.1
General description of the Sony RE216 tuner
The SUT-RE216 is designed for terrestrial TV (digital & analog) and digital cable
reception. It includes a full band tuner and a channel filtering for digital signals. It provides
a low IF output after channel filtering to drive a channel demodulator. Tuning, band
switching and initialization are made via an I
2
C bus
interface. The module is built on a low-loss printed
circuit board carrying all the components in a metal
housing frame with top and rear covers. The single
aerial connector is mounted on one frame side and all
other connections are made via pins at the bottom.
Features:
Full frequency range from 47 to 870 Mhz
•
Digital Platform (DVB-T/T2, DVB-C, ISDB-T & ATSC)
Analog platforms (PAL B/G/I/D/K, NTSC M & SECAM L/L’)
Low IF tuner concept
Summary of Contents for VES1.1E
Page 21: ...5 1 Power management Power Management with Adaptor Power Management with PW25 PW26 ...
Page 22: ... Power Management with IPS16 IPS17 IPS60 PW05 Power Management with PW03 PW04 PW07 ...
Page 27: ...6 2 MSTAR block diagram ...
Page 40: ... Block Diagram of M88DS3002 14 3 Pin Assignment ...
Page 44: ......
Page 49: ...22 Connectors 22 1 SCART SC1 22 2 HDMI CN707 CN708 ...
Page 50: ... 22 3 VGA CN711 15 14 VERTICALSYNC 15 DOC CLOCK _ ...
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Page 78: ...27 2 PSU ...
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