Circuit Descriptions
7.
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 EUROPE ST25CS-2-E (DVB-T/C)
•
SCALER MT5580PUEI/B PBGA-511 TV 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 DVB-T(2) reception DTV part
The Front-End for DVT part consist of the following key
components:
•
TDSY-G720D (DVB-T2)
•
SCALER MT5580PUEI/B PBGA-511 TV Processor
•
DEMODULATOR CXD2842ER-T4 VQFN-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
for the application.
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
•
Rear HDMI: HDMI input ( TV digital interface support
HDCP) with digital audio/PC DVI input
•
+5V detection mechanism
•
Stable clock detection mechanism
•
Embedded EDID
•
HPD control
•
Sync detection
•
TMDS output control
•
CEC control
7.6
Video and Audio Processing - MT5580PUEI/B
The MT5580PUEI/B 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 MT5580PUEI/B combines front-end video processing
functions, such as 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 MT5580PUEI/B, refer
to
.
IF
IF_AGC
RF_AGC
MT5580
IF_AGC
ST25CS-2-E
I
2
C
I
2
C
19780_203.eps
IF
IF AGC
T
S
DA
T
A
RF_AGC
MT5580
T2 demod
CXD2842ER
IF_AGC
TDSY-G720D
I
2
C
I
2
C
I
2
C
19780_204.eps
TS DATA
IP/IN/OP/ON
Tuner I2C
System I2C
MT5580
MCU ARM Cortex-A9
MPEG/vedio/audio
decoder
Scaling
Vedio enhancement
3D comb
LVDS Transmitter
HDMI 1.4
ADC
H 264
Build-in HDMI swich x 3
min LVDS Transmitter
ATD build-in
DVB-T/C Demond
Head phone Amp
USB x 2
PHY
LNB power
AVL6211LA
S2 tuner
S2 function
19780_205.eps
