Sunday, March 29, 2015

SAMSUNG HT-BD1255 POWER SUPPLY CIRCUIT AND BLOCK DIAGRAM

SAMSUNG HT-BD1255 

BLU RAY HOME THEATER 

POWER SUPPLY CIRCUIT AND BLOCK  DIAGRAM 

BLOCK DIAGRAM  

DESCRIPTION
# MAIN SYSTEM (BCM7440P) is connected to whole HT-BD1250 function IC. For HDMI 1080P, BCM7440P transfer the digital video signal with 24bit to HDMI TX chip SIL9134. BCM7440P doesn’t need external up scaling IC because it has a own internal scalar. About it has internal video DAC, so it transfer the analog signal to MM1757, BCM7440P.
MM1757 are video filter and amp.
 # AUDIO DSP (TM320D788) is connected to MAIN SYSTEM. They get the DIGITAL audio signal from main system with bit stream status. And after decoding the signal, they send the digital signal, which is already decoded, to DIGITAL AMP PWM driver IC.
# MAIN SYSTEM MICOM control BCM7440P, AUDIO DSP MICOM, CEC. He gets all information from BCM7440P, and then transfer the information to AUDIO DSP MICOM. They have a communication among them with HOST
SLAVE
Interface. And MAIN SYSTEM MICOM gets the information from User’s remote control. So whenever he get the information, he displays it on the VFD.
# The loader transfer the source audio, video data to BCM7440P.
# Both of USB are available, but front USB is for LOCAL STORAGE of PROFILE 1.1/2.0 and USB HOST function, whire Rear USB is for wireless LAN Dongle.
# DIGITAL IN 1, 2 (SPDIF IN), AUX IN and Tuner IN are each connected to DIR and ADC IC. And then after transforming DIGITAL SIGNAL (SPDIF IN is DIGITAL signal), the audio signal transfers to AUDIO DSP
.

POWER SUPPLY CIRCUIT 
110V VERSION

220V VERSION 
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