Circuit Descriptions
7.
7.4.2
ISDB-T reception(DEMODULATOR part)
The Front-End for DVT part consist of the following key
components:
•
TUNER Latam TDST-H880F
•
SCALER MT5593FPIJ HSBGA-900 Processor
•
DEMODULATOR TC90537FG LQFP-48
Below find a block diagram of the front-end application for DTV
part.
Figure 7-7 Front-End ISDB-T block diagram
7.5
HDMI
Refer to figure
for the application.
Figure 7-8 HDMI input configuration
The following HDMI connector can be used:
•
HDMI 1: HDMI input ( TV digital interface support
HDMI1.4/HDCP1.3) with digital audio/PC DVI input/ARC
•
HDMI 2: HDMI input ( TV digital interface support HDCP)
with digital audio/PC DVI input/ARC
•
HDMI 3: HDMI input ( TV digital interface support
HDMI1.4/HDCP1.3) with digital audio/PC DVI input/ARC
•
HDMI 4: HDMI input ( TV digital interface support
HDMI1.4/HDCP1.3) with digital audio/PC DVI input/ARC
•
+5V detection mechanism
•
Stable clock detection mechanism
•
HPD control
•
CEC control
7.6
Video and Audio Processing - MT5593UPIJ
The MT5593UPIJ is the main audio and video processor (or
System-on-Chip) for this platform. It has the following features:
•
Worldwide multi-standard analog TV demodulator
•
ATSC/DVB-T/DVB-C/DTMB demodulators
•
True 120Hz Full HD MJC
•
Powerful CPU core
•
A transport de-multiplexer
•
A muti-standard video decoder
•
Rich format audio codec
•
MHL 2.0 & Standby Charging
•
Ethernet MAC+PHY
•
Local dimming (LED backlight)
The MT5593UPIJ combines DTV front-end video processing
functions, such as NTSC/PAL/SECAM Video Decoder,
MPEG1/2/4/H.264/VC1/RM/AVS/ and h.264/HEVC decode,
The MT5593UPIJ 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 MT5593UPIJ
eanbles consumer electronics manufactures to build high
quality, low cost and feature-rich DTV.The special color
processing technology provides a natural, deep colors and true
studio quality video. Moreover, the MT5593UPIJ family has
built-in high resolution and high quality audio codec. The
MT5593UPIJ family supports ATSC, DVB-T,and DVB-C,
DTMB demodulation functions.
For a functional diagram of the MT5593UPIJ, refer to
IF
T
S
DA
T
A
RF_AGC
MT5593UPIJ
Demod
TC90537FG
IF_AGC
TDST-H880F
I
2
C
I
2
C
I
2
C
20170_203.eps
20170_204.eps
MT5593
HDMI3
HDMI 1
CN504
CN501
RX
RX
I
2
C
I
2
C
HDMI2
CN503
RX
I
2
C
