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:
•
Silicon Tuner MxL661-AG-R (NTSC,PAL-M, PAL-N and
ISDB-T)
•
SCALER MT5561LVNT/B PBGA-329
Below find a block diagram of the front-end application for
analogue part.
Figure 7-4 Front-End Analogue block diagram
7.4.2
DTV part
The Front-End for DVT part consist of the following key
components:
•
Silicon Tuner MxL661-AG-R (NTSC,PAL-M, PAL-N and
ISDB-T)
•
SCALER MT5561LVNT/B PBGA-329
•
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
•
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 - MT5561LVNT/B
PBGA-329
The MT5561LVNT/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 1-2, H.264,
MPEG-4)
•
A transport de-multiplexer
•
A muti-standard video decoder
•
Rich format audio codec
•
HDMI 1.4a receiver with 3D support
•
2D/3D converter
•
Local dimming (LED backlight)(0ption)
•
Panel overdrive control
•
Two-link LVDS
The
MT5561LVNT/B
combines front-end video processing
functions, such as ATSC,DVB-T/T2,DVB-C,DVB-S2 channel
decoding, MPEG 1-2/H.264 decode, 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 x 1080 @ 60Hz.
It integrates high-quality
HDMI 1.4a, USB 2.0 receiver, Ethernet MAC+PHY, Single core
CPU. Professional error-concealment provides stable, smooth
and mosaic-free video quality
For a functional diagram of the MT5561LVNT/B, refer
to
.
IF
X
IF_AGC
RF_AGC
RF_AGC
MTK5561
IF_AGC
MxL661-AG-R
I
2
C
I
2
C
19760_203.eps
IF
IF-AGC
TS DATA
X
RF_AGC
RF_AGC
MTK5561
TC90537FG
LQFP-48
IF_AGC
MxL661-AG-R
I
2
C
I
2
C
19760_204.eps
19760_205.eps
MTK5561
HDMI Side
REAR HDMI
CN502
CN501
RX
RX
I
2
C
I
2
C