Digital Board Block Description; Select Sound/Video; Detection Signal Flow - Samsung HLT6187SX Service Manual

Circuit Description

13-2-2 Digital Board Block Description

※Options are deleted on the ATSC only Model
WISE LINK WISE LINK
RF-SPLITTER
Air
TM block
SUB TUNER
Cable
Y C
VIDEO 1/2 VIDEO 1/2
CVBS
Monitor out
DTV CVBS
IN OUT
COMPO. 1/2 COMPO. 1/2
Component
PC
HDMI1 HDMI
HDMI HDMI2
HDMI S/W
HDMI HDMI3

■ Select Sound/Video

One is selected from multiple inputs by the switching ID. MICOM decides which port is used for output.
For broadcasting signals, sub-outputs are transferred in CVBS and, the main outputs in Y/C through the 3D Comb, to the digital
board.
Sound signals are selected by the switching IC, of which only one input is transferred to the speaker.

■ Detection Signal Flow

When each port is connected to a signal cable, the detection signal is "low" and can be checked by Micom scanning.
■ CXD3815: Analog YPBPR, CVBS, Y/C(SUPER), Input MUXING and Video Decoding
■ S5H2201: CPU, + MPEG Decoder, Audio signals transferred to MSP of the analog board by I2S
■ Tuner: Main-HD Tuner,Sub-Analog Tuner
■ HDMI: Receives Two input signal and transfers it to S5H2201.
■ Others: Anynet implementation, Optical Power Port, USB Update Port (not available for MP3)
13-4
USB1.1
VSB NIM
TS1 (parallel)
TUNER
I2S to MSP4450
I2S from HDMI
80MHz
ADC main BT601 20bit
VIDEO SW
CXD3815
TEA6425
YUV or RGB 4:4:4
ADC &
30bit
TMDS 165Hz
MST3369
170Mhz
I2S
to Albatross
AV1,2,3/ Compo1,2
PC/ DVI Audio SW
TEA6422
DTV
Albatross
ONENAND
83.25MHz
2 MPEG
2 IPC
3 Scaler
AC3 -Decod
32bit Graphic
153.5MHz
2 TS 1n
1 TS out
2ch 32bit DDR
30 bit in
30 bit out
(10 bit proc.)
YCbCr 24bit
74.175MHz
CH3
CH1
B1 (SDP62)
2 IPC
CH4
SCALER
CH2
DNIe
Sound
Processor
STV8258
Audio DA I2S
PCM1754
from Albatross+
Micom
S3F84BB
Flash
DDR MEMORY
ATSC ONLY(32MB*4)
OSD
32bit
74.25MHz
TMDS
Tx
Sil7170
EM6A9320B1,128M bit X2
166MHz
Audio AMP
NTP3000
Samsung Electronics
Control
Panel
Display
Panel
SPDIF
out
R
Speaker
L