led42t29gp系列2228主板电路原理图

Power

TOInverter212434

765BL-7659898

212345678

VCC-BL-99

LOWSTANDBY

33

33

3 3

3333

0RBL-

1

22

1

4K7PW_CTLPW_CTL

222

ON_PBKR11

22

22 22

1KBL-+5VFOR

VCC-

,10BRI_ADJ-PM2BRI_

R

3904BL-

BL-ADJUST

N29

L16

Powerfor

R93

0.1uFVD7

100uF/16V 3

31.26VFOR6i78CORE 3.3VPower_StandbynlyforAVDD_MPLLand 3

N8

L5

22

6

LX

N3A111-

SOT-223T

3VINVou3

FB

10uF/16V0.1uF

PGNDCOMP

R25

10K/1%

1SOT-11.5V

3VP

N5AP1084-

Powerfor

N7AP1084-

N4NC/AMS1117-

R580

USB1_OD FB/2012R20

3TO-

F

23

N35

VIN

D1D2

1TO-1

R24220R/1%100uF/16V10uFC232.2uF

F11

R582R58110K20K

C4274S3

D3D4

C429C426C43010uF10uF2.5VFOR6I78&

33VPowr_NormalFromDC-

3ON32 2

2.5V

N38NC/AO

L14

3 3

R5860R

33VINVout

NC

6 LX

R587

22

22 10uF

10uF

FB

1SOT-1

PGNDCOMP

R28

NC/22uF

LABMES1VCC-N1612V VCC-N1612V 5V 21D173D2R224C1954D310uF/16VC19810K20K 0RR232R223NC/10K

1、系统供电、电源与主板接口、USB、液晶屏供电及背光开关/调整控制部分

Crystal

SPIFlash

System

ParallelTS

Parallel

RES

CVBS_OUT

ADDforLAN

Debug

BootLoaderSPI

KEY

Mode

GPIOPULL-

MIPSE-JTAG

DDR3MIU0

1stDDR3

DDR3MIU1

2dDDR3

3、

DDC

DDC

HotPlug

DDC

Connectr（下左

ForCECLeakage

4、HDMI接口及外围匹配网络部分电HDTV1

15

2222

222RGB2-YPbPr_GIN222RGB2-YPbPr_BIN2111RGB2-YPbPr_RIN21112222

VD1511NC/ESD11

VD161NC/ESD1

VD17R257NC/ESD5 56466442422112211

R27410KR282112VD19VD20NC/ESDNC/ESD112

COMP_AUR22211COMP_AUL22211AV1 中白

NC/ESD

CVBS2-RCA

AV

右7 9

R24510KR249

MIC_RINMIC_LIN

1

SSCT-SCAR

C20

1

3V3

88

2 2

C222SC_CVBS_OUT

SC_CVBS_OUT1AV21

NC/ESD

2SCART-2SCART-

22VD21221 1

SCART_

CA22R259

R260

N74

C486

1

SC_CVBS-IN

2SC1-2

SC1- C487 NCSC1-

1+INR+INL -INL

NC/ESD

OUTROUTL

NC/68KC4895

SCART-RoutR345

NC

R248

103.3V_602_OUT

R252

RCA_AU_IN

PVSSPVDD CP

+

33

R251

NC/1uFNC/ESDCOAXIAL

MUT

22

C495

黄SIGNAL黄SIGNALGND

22

C500102R2 100R

11

XS35XS35RVGA_RINGBVGA_GIN VD33VD105NC/ESDNC/ESNC/ESDR188R191 510R510RVGA_HSYNC2VGA_RX VGA_TX 1VD104VD36R192NC/ESD10KUARTX2DDC_SCLDDC_SDAVD32VD103NC/ESNC/ESDR3R186CCNK7NC/4K7P65 /AV/VGA输入、AV/光纤输出接口 匹配网络部分电

OG

0:LS

1:DMBT

SAW

OGTUNERI2CLevel

33V

144PinPOWERFOR

I2CAddress:

N26

POWERFOR

+1.2VFOR

6

Vout=0.923

R535

2ET_MDC-

R536

AVDD33REGIN

1

PM44-

252ET_TXD0-2ET_TXD1-

43432

33RX4565675

REGOUTAGND

TX+ TX-

AGND

5R

33R

27

4

CTSH_GNDC4072ET_COL-

RP25

5

TCM-

R 75R

SH_GND2ETRXD1-

33RX45567

ISET

6

NC3RX+

8 3 SH_GND50MHzCLOCK

19

TXP 49R9/

7Generateby

18

MDI_TP

C404

RX-

6 SH_GND43432

R541

161

MDI_TN

TXN 49R9/

PHAD0/L

toRMII

5K1ET_RX_ER-E

MDI_RP

RXP2R53749R9/

C405

PHAD3/L

11

464714

MDI_RNTEST_ON

RXN2R538

F

12R5465K1*

48910121315111745

AN_ENADPLXSPDRPTRAPSISOLMII/SNIBRESET_N

X2

Pin48couldbeshortVDD33ifinterruptfuntionisnot

AsclosetoPin14as

ascloseastoLEDLEDandPHY

R555

FB/1608*

ThisschematicsetsPHYaddressAscloseto

C419uF

PHYAD0/LED0PHYAD1/LED1PHYAD2/LED2

AscsetPin3asp

PHYAD3/LED3PHYAD4/LED4

100ActCOL7、以太网接口、信号耦合/变换 匹配网络部分电

PowerOn

PowerOff

0:1:

audiopre.

耳机输出

8、主通道伴音功放、低音功放、音频前置放大、开/关机静音、耳机/低音输出接口 匹配网络部分电+5V

2 OUT

L84

R1563 7

6

BST

R15646K49/1%

8

4

FB

33V_NormalUrsa_

Urs_VCC33V UrsaVDDP

1094C1095C1096C1097C1098C1099

Ursa

+1.8V

C1077

11

Ursa_VCC1.8VUrsa_AVDD_DDR

C10

C