Circuit Descriptions
7.
7.4.2
Front-End ISDB Reception DTV part
The Front-End for DVT part consist of the following key
components:
•
TUNER Latam TDST-H880F
•
SCALER MT5580HUEI PBGA-511
•
DEMODULATOR TC90537FG LQFP-48
Below find a block diagram of the front-end application for DTV
part.
Figure 7-7 Front-End ISDB DTV block diagram
7.5
HDMI
Refer to figure
for the application.
Figure 7-8 HDMI input configuration
The following HDMI connector can be used:
•
+5V detection mechanism
•
Stable clock detection mechanism
•
Integrated EDID
•
HPD control
•
CEC control
7.6
Video and Audio Processing - MT5580QUEI
The MT5580QUEI is the main audio and video processor (or
System-on-Chip) for this platform. It has the following features:
•
Powerful CPU core
•
A transport de-multiplexer
•
A muti-standard video decoder
•
Rich format audio codec
•
HDMI 1.4a receiver
•
Ethernet MAC+PHY
•
Local dimming (LED backlight) (option)
•
Panel overdrive control
•
Two-link LVDS
The MT5580QUEI combines front-end video processing
functions, support NTSC/PAL/SECAM TV decoder with a 3D
comb filter (NTSC/PAL). The MT5580QUEI 2Gb enables
consumer electronics manufacturers to build high quality, low cost
and feature-rich DTV. The MT5580QUEI supports Full-HD
MPEG1/2/4/h.264/DiviX/VC1/RM/AVS/VP8 (option) video
decoder standards, and JPEG. Also supports MediaTek
MDDi
TM
de-interlace solution which can reach very smooth
picture quality for motions. A 3D comb filter added to the TV
decoder recovers great details for still pictures. The special
color processing technology provides a natural, deep colors
and true studio quality video. Moreover, the MT5580QUEI
family has built-in high resolution and high-quality audio codec.
For a functional diagram of the MT5580QUEI, refer to
IF
T
S
DA
T
A
RF_AGC
MT5580
TC90537FG
LQFP-48
IF_AGC
TDST-H880F
I
2
C
I
2
C
I
2
C
Demod
20080_204.eps
19850_205.eps
MT5580
HDMI1
HDMI SIDE
CN501
CN503
RX
RX
I
2
C
I
2
C
HDMI2
CN502
RX
I
2
C
