Circuit Descriptions
7.
•
TUNER EUROPE system ST03CS-2-E
•
SCALER NT72567BG-BA LFBGA-576
•
DEMODULATOR NT78820TLMFG/B LQFP-64
Below find a block diagram of the front-end application for
DVB-T2 DTV part.
Figure 7-13 Front-End DVB-T2 DTV block diagram
7.5
Front-End DVB-S(2) reception
The Front-End for the DVB-S(2) application consist of the
following key components:
•
TUNER EUROPE TDQS-A801F
•
SCALER NT72567BG-BA LFBGA-576
•
AVL6211LA LQFP-64
Below find a block diagram of the front-end application for
DVB-S(2) reception.
Figure 7-14 Front-End DVB-T2 DTV block diagram
The application supports the following protocols:
•
Polarization selection via supply voltage ( 18V = horizontal,
13V = vertical)
•
Band selection via “toneburst” (22kHz): tone “on” = “high”
band, tone “off” = “low” band
•
Satellite ( LNB) selection via DiSEqC 1.0 protocol
•
Reception of DVB-S ( supporting QPSK encoded signals)
and DVB-S2 ( supporting QPSK, 8PSK, 16APSK and
32APSK encoded signals), introducing LDPC low-density
parity check techniques
7.6
HDMI
Refer to figure
for the
application.
Figure 7-15 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
•
HDMI 3: HDMI input ( TV digital interface support HDCP)
with digital audio/PC DVI input
•
+5V detection mechanism
•
Stable clock detection mechanism
•
Integrated EDID
•
HPD control
•
Sync detection
•
TMDS output control
•
CEC control
7.7
Video and Audio Processing - NT72567BG-BA
The NT72567BG-BA 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)
•
Integrated DVB-T/DVB-C/DVB-S channel decoder
•
Integrated
CI+
•
Integrated motion accurate picture processing
•
High definition ME/MC
•
Extended colour gamut and colour booster
•
Integrated USB2.0 host controller
•
Improved MPEG artefact reduction compared
•
Security for customers own code/settings ( secure flash)
The NT72567BG-BA/D is an integrated TV system-on-chip
which complaints with variety ATV as NTSC,PAL and
SECAM,and DTV standards as ISDB-T,DVB-T/C, integrates
DTV and multi-media AV decoder,SIF demodulator,and
support A/V post-processing. It also includes next generation
Motion Accurate Picture Processing High flat panel screen
resolutions and refresh rates are supported with formats
including 1366 × 768 @ 60Hz and 1920 x 1080 @ 60Hz.The
combination of Ethernet, CI+ and H.264 supports new TV
experiences with IPTV and VOD. On top of that, optional
support is available for 2D dimming in combination roptimum
contrast and power savings up to 50%.
For a functional diagram of the NT72567BG-BA, refer
to
.
IF
TS DATA
IF_AGC
NT72567BG
T2 Demod
NT78820TLMFG/B
IF_AGC
ST03CS-2-E
I
2
C
I
2
C
19530_209_130810.eps
130810
TS DATA
IP/IN/OP/ON
Tuner I2C
Tuner I2C
System I2C
NT72567BG-BA
LNB power
AVL6211
S2 tuner
S2 function
19530_210_130810.eps
130810
19530_211_130810.eps
130810
NT72567BG-BA
HDMI1
HDMI 2
CN1002
CN1003
TMDS
TMDS
I
2
C
I
2
C
