Philips 24PHT4031/12, Руководство по обслуживанию

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Circuit Descriptions EN 37 TPN16.3E LA 7.
2016-Oct-28
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7.4.2 DVB-T2 DTV part
The Front-End for DVB-T2 DTV part consist of the following
key components:
• TUNER EUROPE system ST42CS-2-E
• SCALER NT72562TBG-BB/D HS-LFBGA-510
Below find a block diagram of the front-end application for
DVB-T2 DTV part.
Figure 7-7 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 ST42CS-2-E
• SCALER MT5593FPIJ HSBGA-900
• DEMODULATOR Si2168-C50-GMR QFN-48
Below find a block diagram of the front-end application for
DVB-S(2) reception.
Figure 7-8 Front-End DVB-S2 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 2.0 protocol
• Reception of DVB-S ( supporting QPSK encoded signals)
and DVB-S2 ( supporting QPSK, 8PSK encoded signals)
7.6 HDMI
Refer to figure 7-9 HDMI input configuration for the application.
Figure 7-9 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
• +5V detection mechanism
• Stable clock detection mechanism
• HPD control
• Sync detection
• TMDS output control
• CEC control
• ARC control
• MHL control
7.7 Video and Audio Processing -
NT72562TBG-BB
The NT72562TBG-BB is an integrated digital TV
system-on-chip which compliants with variety ATV as NTSC,
PAL and SECAM, and DTV standards as ISDB-t,
DV-T/-T2/-C/-S/-S2, ITU-TJ.83B, ATSC, DTMB, integrates
DTV and nulti-media AV decoder, SIF demodulator, and
support A/V post-processing.
• Spread Spectrum PLL for EMI reduction
• eMMC 4.51 with HS200 type flash
• Support VGA / IR / KeyPad / CEC/DDCCI wake-up
• Meet Common Interface Plus’s Robust and Compliance
rule
• Integrated triple high speed ADCs/ PLL to support both
YPbPr and RGB format signal
• Support multi-standards, macro-vision detection and
related status report
• A transport de-multiplexer
• Support VPS signal decode for EU channel sorting
purpose
• Built-in 10-bit DAC for CVBS Analog Video output
• Support pixel formats in YUV420,YUV422 and YUV444
IF
DVB-T/C/T2/S2
De-mod
NT72562BG-BB
TUNER EUROPE
TDQS-A751F
IF_AGC
DIF_OUT
ST42CS-2-E
I
2
C
20210_206.eps
TS DATA
IP/IN/OP/ON
Tuner I2C
Tuner I2C
System I2C
NT72562TBG-BB
LNB power
Si2166
S2 tuner
S2 function
20210_207.eps
20210_208.eps
NT72562TBG
HDMI1
HDMI 2
CN501
CN502
RX
TX
RX
TX
I
2
C
I
2
C