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Circuit Descriptions
7.
Figure 7-3 DC/DC converters
7.4
Front-End Analogue and DVB-T, DVB-C;
ISDB-T reception
7.4.1
Front-End Analogue part
The Front-End for analogue tuner consist of the following key
components:
•
TUNER LATAM ST07WN-6A-E
•
SCALER MT5580GUDI PBGA-511 Processor
Below find a block diagram of the front-end application for
analogue part.
Figure 7-4 Front-End Analogue block diagram
7.4.2
Front-End ISTB reception DTV part
The Front-End for ISTB part consist of the following key
components:
•
TUNER LATAM ST07WN-6A-E
•
SCALER MT5580GUDI PBGA-511Processor
•
DEMODULATOR TC90537FG LQFP-48
Below find a block diagram of the front-end application for DTV
part.
Figure 7-5 Front-End DVB-T2 DTV block diagram
7.5
HDMI
Refer to figure
Figure 7-6 HDMI input configuration
The following HDMI connector can be used:
•
HDMI 1: HDMI input ( TV digital interface support HDCP)
with digital audio/PC DVI input/ARC
•
HDMI 2 : HDMI input ( TV digital interface support HDCP)
with digital audio/PC DVI input
•
+5V detection mechanism
•
Stable clock detection mechanism
•
Embedded EDID
•
HPD control
•
CEC control
7.6
Video and Audio Processing - MT5580GUDI
The MT5580GUDI is the main audio and video processor (or
System-on-Chip) for this platform. It has the following features:
•
Multi-standard digital video decoder (MPEG -2, H.264,
MPEG-4)
•
ATSC (option)/DVB-T (option)/DVB-C (option)
demodulator
•
Worldwide multi-standard analog TV demodulator
•
A muti-standard video decoder
•
A transport de-multiplexer
•
HDMI 1.4a receiver with 3D support
•
2D/3D converter
•
Rich format audio codec
•
Powerful dual core CPU
•
Local dimming (LED backlight)
The MT5580GUDI combines front-end video processing
functions, support ATSC,DVB-T/T2,DVB-C,DVB-S/S2 channel
decoding, MPEG1-2/H.264 decoding, analog video decode
and HDMI reception, with advanced back-end video picture
improvements. It also includes next generation Motion
Accurate Picture Processing High flat panel screen resolutions
and refresh rates are supported with formats including 1360 ×
768 @ 60Hz and 1920 × 1080 @ 60Hz. The combination of
Ethernet, CI+ and H.264 supports new TV experiences with
IPTV and VOD. A 3D comb filter added to the TV decoder
recovers great details for still picture. The special color
processing technology provides a nature, deep colors and true
studio quality video. Professional error-concealment provides
stable, smooth and mosaic-free video quality.
For a functional diagram of the MT5580GUDI, refer
to
.
IF
IF_AGC
RF_AGC
MT5580
IF_AGC
TDST-H080F
I
2
C
I
2
C
19840_203.eps
IF
T
S
DA
T
A
RF_AGC
MTK5580
Demod
TC90537FG
IF_AGC
TDST-H080F
I
2
C
I
2
C
I
2
C
19840_204.eps
19840_205.eps
MT5591
HDMI2
HDMI3
HDMI SIDE
CN502
CN503
CN504
RX
RX
RX
RX
I2C
I2C
I2C
I2C
HDMI1
CN501