海信电视机2173主板电路原理图

POWER

TUNER

Low:DisableHigh:

PANEL

+3.3VSTANDBY

+3.3VNORMAL +1.26VFORMSTARICSTANDBY

R2

DDR2

MSTCoreVoltageneedtoset

USB

R1

Vout=Vrefx_1+_R2/R1=1.25x_1+_1k/2.4k

MST6M68DQ_296_ICDemoSystem

1stDDR2

KEY

+3.3VNORMAL

LVDS

DEBUG

+1.26VFORCore

+3.3VSTANDBY

+1.8VFORDDR2NORMAL

SERIAL

Mode

USBUSB A- A-

B3F3

2D2

22

22A-22A-2A-2A-2A-2A-2A-2A-2A-22222222

A_CLK+1NC/150R2

A-

A-MDATA11D3A-MDATA12D1A-MDATA9C2A-MDATA14A- A- A-MDATA4

dQDQ1513DQ10

C8A-MDATA8D7A-MDATA10D9A- A- A- H9A- A-

1A-1

432432

567567

A-

L3

L2

CAS#_12_12

432432567

A- A- A- A- A- A-

A A VssQUDQS#BVssQUDM UDQSVssQVddQDQ9 VddQDQ8 DQ12VssQDQ11 DQ10VssQDQ VssQLDQS#F VssQLDM LDQSVssQDQVddQDQ1 VddQDQ0 VssQDQ3 VssQDQVddLVref VssDLK RAS# L CAS#M

M8A-M7A-N8A-N7A- A- A- A-

A-

432432567

A- B

A-A-

4325674325671R281561R26347

A-A- A-+C771

1R264471R855471R85647

A- A

MST6M68DQ_296_ICDemo

A

Wednesday,April02,

MST6M68DQ_296_ICDemo

2121DATA2+_0_0DATA22121DATA2+_0_0DATA2DATA1DATA0DATA0-_8_8CLK+_9_9CLKCLK-_11_11CECNCSCLSDA23DDC/CEC 180-Degree20+5VPOWER_17_1715SDAGND3A2 A18A02121DATA2+_0_0DATA2DATA1DATA0DATA0-_8_8CLK+_9_911CLKSHELD_10_10CLK-_11_11CECNCSCLSDA23DDC/CEC 180-Degree20+5VPOWER_17_1715SDAGND3A2 8121DATA222DATA1DATA0DATA0-_8CLK+_9CLKSHIELD_10CLK-_1123CECNCSCLSDADDC/CECGND_16+5VPOWER_171920HOTPLUG_1815SDAGND32321VGA

置于下部

SPDIF

EMPYPbPr

YPbPr/RGB/DMP

10

MST6M68DQ_296_ICDemo

1st

AV

Keeptracewidth_12mil+_KeepAGNDtracewithsignal黄 黄 222白1中白1红右红979988

1212

3232

11

33

1

2222

33

222 MST6M68DQ_296_ICDemo D

11

11

D709

R906 ATV_RF-AGC100

D7061N4148R89812K

2RF2

10K

D708

1 SAWOUT2

C+30VTuneC

0

D705

OUT1

C33

ATVTuner

12

SAWOUT1OUT2

1122

MB_+5VVT_33VBT_TP.

9 7 3 ATV-

11

22

B31R8294.7KPAL/NTSC_CTLPAL/NTSC_CTL3远离20 02.7K 5 52 11MST6M68DQ_296_ICDemo11MST6M68DQ_296_ICDemom Wednesday,April02,722 MUTECircuit&Ear

AudioLOW:shutdown

AUDIO

AudioLine

AudioInput

LOW:shutdown

内置、外置扬声器选择

EAR

MST6M68DQ_296_ICDemo

PowerOnPowerOffPH D1111

22L322

2121

2121

2121

2121

2121

2121

21621

2 2

2+2

221212121 221212121

1 1

112100uF/16V112

11 11

22

L4

+

262

2

211211

22

uF220uF/16VCA16

111100uF/16V111

22

11

221 1

22

DDR2

33

CA11

21212121

2121

2121

2121

2121

2121

2121

12A12

R5

A0C63R60

+

21+CA6 100uF/16V21

2121

2121

2121

2121

2121

MST6M68DQ_296_ICDemo

Wednesday,April02,

MST6M20S

2-CHLVDSin/4-CHLV