3-57
3-58
4. NTSC BLOCK DIAGRAM & SIGNAL FLOW
TBMU24311IMB
CPU
(PPC405CR)
SDRAM
(16Mx16bx2)
Flash ROM
(1Mx16x2)
EEPROM
(32Kx8b)
CPU I/F
VSB/QAM
Channel
Decoder
(LGDT3302)
25MHz
OSC
CH3/4 RF
Modulator
AIR
RF IN
CABLE
RF IN
Loop
Through
or CH3/4
Modulated
Out
RF
480i CVBS
Monaural Audio
CH 3/4
Control
CH
Select
LNB
Multi-
switch
Zero-IF
Tuner
FEC
(STV0299)
LNB Control
(LNBP20PD)
DIRECTV-TP
(LGDT1303
TPN-II)
Smart Card I/F
(TDA8004T)
Card
Holder
Modem IC
(Si2400)
Silicon
DAA
(Si3015)
I2C CH0
Host I/F
Off-Hook Signal
UART0
ODU
DIRECTV AC-3/MPEG Audio
Digital Audio
Optical Out
Audio Out 1&2
Monaural Audio
(to CH 3/4 Modulator)
2CH Monitor Audio
I2C CH1
TP Demux /
Video Decoder /
Audio Decoder /
Format Converter /
Video Display Processor
(LGDT1102 : HD-II)
ATSC TP
DIRECTV
Video PES
Digital
Decoder
4H Comb
Filter
ADC
27MHz Clk Gen.
W/ VCXO
(CY24212-5)
Host
I/F
Main PWM
YCbCr
Source
Control 1
R,C
LPF
RGB/YPbPr
SDRAM
(2Mx32bx2)
Main VDP Clock
SDRAM
(1Mx16bx1)
YC
Clock Gen.
QPSK TUNER
4.9152 MHz
X-tal
Mix &
OSC & PLL
BPF &
AMP
VIF
TDVB-H920P
Switch
(74HC4066)
I2C CH1
I2C CH1
SW Control
AT/NT NIM TUNER
MUX
(74LCX157)
x 3
VIDEO PIXEL DECODER
VPX3226E
18.432 MHz
X-tal
20.25 MHz
X-tal
I2C CH1
EPLD
(EPM3064A)
-
HD-II DMA I/F
-
Ready Gen.
-
Reset Gen.
-
Output Exp.
-
Video Glue.
ADDR Buffer
(74FCT163244)
Data Buffer
(74FCT163245)
I2C CH0
I2C CH1
CPU CLK
RS232
Driver
(MAX232)
UART1
UART0
Outputs
Sys Reset
(KIA7029 &
74HC14)
Clock Gen.
(CY24206-4)
NT2CLK
DENC Clock
DVI
Transmitter
w/ HDCP
(Sil170)
DVI Clock
Digital RGB, Hs, Vs
TMDS CH0,1,2
TMDS CLK +-
I2C CH1
I2C Ext.
(82B715)
I2C CH1
DVI Out
Memory I/F
AC120V
4V
6.5V
12V
-8V
24V
3.3V-2
KIA78R33F
5V-2
KIA78R05F
A9V/A9V-A
KIA78R09F x 2
2.5V-1
SC1565IST-2.5
Inputs
ATSC
SAW 2
ATSC
SAW 1
IF
Down
Converter
VFD
Controller
Front Panel
VFD
3 line Bus
Key Scan
Key Block
3.3V-1
KIA378R33PI
YPbPr Video Out
LPF
(TOKO 25M)
X 3
AMP
(AD8013AR)
AMP
(AD8013AR)
YPbPr MUTE
RGB MUTE
Line Driver
(74HC540)
RGB
Hs, Vs
RGB Video Out
NTSC Video
Sync Sep.
(LM1881M)
Vsync
MTS / SAP
Processor
(MSP4448G)
Digital Audio
Buffer
(MC33078)
MUX
(74LCX157)
SPDIF MUTE
Control
NTSC Audio
36.864MHz
OSC
3V
SC Clk
UART Clk
DATA PORT
Audio 8V
KIA78DL08F
SAT.IN
PHONE JACK
Display TYPE
IR
Receiver
Power
Switch
SMART CARD
SMPS
(cabling)
Digital Audio Out
2CH L/R Audio Out
2CH L/R Audio Out
Out
Select
RF Switch &
CH Mod.
AV chip
(AV1AWA)
480i CVBS ( to CH 3/4 Modulator )
Video Out 1,2
AMP
(TK15420)
VCR out (Comp.)
S-Video Out
AMP
(TK15420)
VCR out (Y/C)
VCR CONTROL
uCOM
(S3C80B5)
RF
Remote
SYSCLK
TPN-II Clock
1.8V-1
SC1565IST-1.8
5V-1
KIA78R05F
1.8V-2
SC1565IST-1.8
30V
-5V
KIA79L05F
TASC-H001F
TU360
IC801
IC800
X800
IC802
IC901
IC902
X901
IC704
IC702
IC701
X701
TU300
IC301
TU301
IC500
IC600
IC501
IC400
IC401~403
IC404~405
X600
IC601~603
IC604
IC612
IC605
IC607
IC610
IC609
IC606
IC608
X601
IC101
IC204
IC107 & 106
IC102~103
IC104~105
IC203
IC210
IC201
SW201
IC205
IC206~207
IC950
IC703
IC951
IC956/959
IC954
IC905
X101
IC955
IC952
IC957
IC953
27 MHz
X-tal
:Front-end Signal
: Video Signal
: Audio Signal
: Digital Video Signal
: Digital Audio Signal
Содержание LSS-3200A
Страница 17: ...3 8 Fig 01 Fig 02 Fig 03 ...
Страница 32: ...3 23 Fig 02 IC201 87 37 5MHz PERI Clock Fig 03 IC210 2 8MHz MICOM Clock ...
Страница 49: ...3 40 FIG 05 IC901 2 Modem Chip Clock 4 9152MHz FIG 06 IC901 3 Modem PLL Out Clock 9 8MHz ...
Страница 63: ...3 61 3 62 2 CPU PPC405CR CIRCUIT DIAGRAM ...
Страница 64: ...3 63 3 64 3 CPU PERI RF REMOTE VCR CTRL CIRCUIT DIAGRAM ...
Страница 65: ...3 65 3 66 4 FRONTEND CIRCUIT DIAGRAM ...
Страница 66: ...3 67 3 68 5 HD2 SDRAM CIRCUIT DIAGRAM ...
Страница 67: ...3 69 3 70 6 DIRECTV HD STB CIRCUIT DIAGRAM ...
Страница 68: ...3 71 3 72 7 VDP I F DISPLAY OUTPUT CIRCUIT DIAGRAM ...
Страница 69: ...3 73 3 74 8 NTSC AUDIO PROCESSOR CIRCUIT DIAGRAM ...
Страница 70: ...3 75 3 76 9 DIRECTV TP DEMUX CAS I F CIRCUIT DIAGRAM ...
Страница 71: ...3 77 3 78 10 2400 BPS ISO MODEM CIRCUIT DIAGRAM ...
Страница 72: ...3 79 3 80 11 POWER REGULATION CIRCUIT DIAGRAM ...
Страница 73: ...3 81 3 82 12 CAM I F CIRCUIT DIAGRAM ...
Страница 74: ...3 83 3 84 13 FRONT 2R VFD KEY SCAN CIRCUIT DIAGRAM ...
Страница 75: ...3 85 3 86 14 FRONT POWER KEY CIRCUIT DIAGRAM ...
Страница 76: ...3 87 3 88 PRINTED CIRCUIT DIAGRAMS 1 DIGITAL MAIN P C BOARD BOTTOM LOCATION GUIDE ...
Страница 77: ...3 89 3 90 2 DIGITAL MAIN P C BOARD TOP ...
Страница 78: ...3 91 3 92 3 CAM P C BOAR BOTTOM 4 CAM P C BOAR TOP 5 POWER P C BOARD LOCATION GUIDE LOCATION GUIDE ...
Страница 79: ...3 93 3 94 6 TIMER P C BOARD LOCATION GUIDE LOCATION GUIDE 7 KEY P C BOARD ...
Страница 103: ......