Circuit Descriptions
7.
7.
Circuit Descriptions
Index of this chapter:
7.1 Introduction
7.2 Power Supply
7.3 DC/DC Converters
7.4 Front-End Analogue and DVB-T, DVB-C; ISDB-T reception
7.5 HDMI
7.6 Video and Audio Processing - MT5561LVNT/B PBGA-329
Notes:
•
Only new circuits (circuits that are not published recently)
are described.
•
Figures can deviate slightly from the actual situation, due
to different set executions.
•
For a good understanding of the following circuit
descriptions, please use the wiring, block (see chapter
) and circuit diagrams (see chapter
10. Circuit Diagrams and PWB Layouts
).Where necessary,
you will find a separate drawing for clarification.
7.1
Introduction
The TPM15.5L LA is a new chassis launched in LATAM in
2015. The whole range is covered by MT5561.
The major deltas versus its predecessor support NTSC;
PAL-M; PAL-N AND ISDB-T with also multi-media, CEC,
ARC, SPDIF functionality.
The TPM15.5L LA chassis comes with the following stylings:
•
series xxPHG4900xx
•
series xxPHG5000xx
•
series xxPFG5000xx
7.1.1
Implementation
Key components of this chassis are:
•
SCALER MT5561LVNT/B PBGA-329
•
Silicon Tuner MxL661-AG-R
•
DEMODULATOR TC90537FG LQFP-48
•
AUDIO TAS5729MDDCAR 10W TSSOP-48 for Audio
Amplifier
7.1.2
TPM15.5L LA Architecture Overview
For details about the chassis block diagrams refer
to
. An overview architecture can be found in
.
