海信電視機(jī)5277主板電路原理圖

POWER

DTMB

SiliconTuneronRFor

揚(yáng)聲器耳機(jī)端子

USB

網(wǎng)口

DDR3

+12VAIC2862-

2

eMMC/Nand

LDOASIC-1V2

LDO

CC

Block

USBUSB射頻遙控器射頻遙控器1112分量 分量 網(wǎng)口網(wǎng)口視頻輸出輸出耳機(jī)輸出耳機(jī)/耳機(jī)/音頻輸出音頻輸出GPIOPINGPIOPINGPIOFunctionSCARTSCARTstrap[1]O0O1O2O3O4O5CC

MAINPOWER

DIGITALPOWER

+12V

N11AP1084DGAZ1084D-

C136C133

C538

0R

R5520R

R649

都從這一個(gè)LDO出電流會(huì)增加400mA左右此處電容增加到

ADJ調(diào)整：根據(jù)板子實(shí)際排布情況

R291

+5VFOR

10pin電源時(shí)增加

確保最遠(yuǎn)端的電壓不能低于規(guī)格書要求

1.25x_1+180/110_=

1k/NC

R662

R21

2.2k/NCR670

C101R650

C11C19C1210u/16V10u/16V100n/16V

10u/16V

此部分電路是確保+5V_SW上電晚于VCCK此部分電路不和能N42同時(shí)使用

BLM18PG121SN1/NC

目前新電源都是采用10pin插座設(shè)計(jì)

+1V2FOR

VOUT=0.765

此部分電路基本山用不到，下BOM要注意3.3V

LED

MMBT3904LT1

100n/16V

此處更改為2.2uf，目的是：掉電時(shí)延緩3V3的掉電時(shí)間，讓eMMC掉電晚于VCCK,有助于緩

10u/16V10u/16V

解異常掉電是eMMC丟數(shù)據(jù)的幾率，但是要

重點(diǎn)測(cè)試一下開(kāi)關(guān)時(shí)MOS管的溫度,若溫度過(guò)高可調(diào)整此處的RC網(wǎng)絡(luò)參數(shù)，來(lái)保證掉電

此處增加限流電阻，確保待機(jī)

時(shí)

狀態(tài)下的待機(jī)功率不

VOUT=0.765

3V3_SB只有幾十TLV70233是一個(gè)固定3V3輸出的，毫安的電流沒(méi)有pin4是NC，此處不要接?xùn)|西 必要用10uf的電容

1k/NC

100n/16V/NC

og

第一輪板子回來(lái)，仔細(xì)測(cè)試一下伴音的干擾、雜音等問(wèn)題，若沒(méi)有問(wèn)題， 時(shí)直接將這幾個(gè)電阻去掉簡(jiǎn)化PCB設(shè)計(jì)，降低干擾

Head

靠近功放放置

C281,C251靠近功放

新功放，初次使用所有的測(cè)試都要嚴(yán)格進(jìn)行，切切！

PowerOn

0:

PowerOff

ORESETBORESETB

4,5,7,8,9,10,11,12

AC4 AB2 AA3 AA2 Y3 Y2

V10

Baseoncustomer's

4,5,8,11,124115,85,8

AVSS33_XTAL_STBAVDD33_XTAL_STB

Y1PDD7 AC1 AB5PACLE AA5 AE8ORESET#Y9

AD10AVDD10_LDO

8,118,1111114

AB10

R452

內(nèi)部增加上拉電阻，復(fù)位用5505內(nèi)部的電路實(shí)現(xiàn)

SYSTEM

RESET

4,5,84,5,8,11,12

27MHz

C891u/10V

closeto

IF_AGC_SW

R530

4,5,7,8,9,10,11,12

34.7k3

R18

4.7k

22

1

2323

電容用于改善ESDSOC端放置

4,5,7,8,9,10,11,124,5,8,11,12

3.3VIO

og

I2CADDRESS

Core

10p/50V10p/50V此處預(yù)留兩個(gè)電容用于改善ESDSOC端放置

Chip

4,5,84,5,8,11,12

0R

0R

C373C376

C119

10u/16V10u/16V1u/16V10u/16V100n/16V100n/16V100n/16V10u/16V

M6L6M5L5M4L4M3L3

VCCK29P9VCCK30R9VCCK31T9VCCK32U11VCCK33U12VCCK34VCCK35VCCK36

MMC將此處的復(fù)用網(wǎng)絡(luò)發(fā)給海力士、東芝、美光MMC

M2

B2

NC37L1

AA4VCC3IO_CE25VCC3IOAB3VCC3IO_B

A4B13D1D14NAND_N25AH2L3L4L12

NC38L2NC122AH11NC120AH6NC2A6NC108NC109NC110NC111

L13L14PARB#M1

NC112NC113NC114

DVSS5

M2

NC115

VCCQ_K6

M3M12

NC116NC117

M6VCC_N5

10u/10V

M13

NC118

M14N1N2

NC119AH4NC121NC107

0R

N3N12N13

NC106NC105NC104

0R 0R

J6J5J4

VSS_R10VSS_U8K4VSSQ_K4DVSS15

N14

NC103

J3

P1P2P12P13P14R1R3

NC102NC101NC100NC99NC98NC97NC96NC95NC83

預(yù)留串聯(lián)電阻為使用不同廠家的eMMC設(shè)置，

4,5,6,8,9,10,11,12

AB13

VGA

C530C531

AE12AB12BPAC12

ClosetoVGA

55

AV1_L_In

5

55

YPbPr_R_In1

AD14COM1AE14AB14

121212

AC13

8

1266

100R6

4,5,8,11,124,5,6,8,9,10,11,12

Y14

2

M21 M22

Closeto

VGA_5Vin

4,5,84,5,8,11,12

C25947n/16V

VGASYNCNEARLYYPBPR NEARLY左SIGNAL1SIGNAL3

C163 C164

GND中4

0R 100RC17010n/50VSIGNAL46SIGNAL65右79898

C171

左綠3SIGNAL1綠3SIGNAL3

MONITORSCARTCVBSNEARLY NEARLY中

15

C162

1.8

3SIGNAL12

R146

8

SIGNAL1黃SIGNAL3

AV1L_IN1C2622.2u/10V

GNDSIGNAL4白SIGNAL6GND

AV1R_IN1C2652.2u/10VR183YPBPRL_IN0C1752.2u/10V

og 0R 0R 0RC

TCON0~12

11

R51645 67 8 100R/NC9 100R/NCBL- 1

5,65,64BL-4,114,5,11,12 4,5,6

AVDD33_LVDSAA23AVSS33_LVDSAG16AVSS33_LVDSAF17AVSS33_LVDSA

11719 2

4,5,6,7,9,10,11,12 4,5,11,12

AVDD12_LVDS_2AVSS12_LVDSA

227

og

29

Powerfor

48

10u/16V/NC100n/16V20k

12324S3

D18D18D25

10u/16V

100n/16V

3322

11

LVDSTX_AO0PRP25 LVDSTX_AO2PRP28

587

OSCL0

LVDSTX_AO3PRP29

5

34

+5V_SG

10k/NC10k/NC

LVDSTX_AE0PRP26

1

VSS

R221

LVDSTX_AE2PRP34

0R/NC

XP16

LVDSTX_AE3PRP35

5

CLKOUT

16

33

22

38KHZSyncFROM5505

6

4,5,11,12

PIN

GPIO

R231

224.7k/NC

2323

用于控制屏3Don/off

60HZFROMTCONTO55053D_SYNC_OR398 R399

116,11

主板給tcon背光 tcon調(diào)整后的背光 信號(hào)（LG)或TCONGPIO控制

從該方案開(kāi)始，60Hz同步信號(hào)進(jìn)SOC(GPIO8)，SOC進(jìn)行調(diào)制處理，出來(lái)后到3D_OUT(GPIO9)

23

E3F7

A0A1

E3F7

A0A1

RVREF_asclosedtoMain

F2F8

A2

F2F8

A2

H3H8

A4

H3H8

A4

G2

A6

G2

A6

8

H7D7C3

A7A8

H7D7C3

A7A8

4,5,6,7,8,10,11,12

34

65

C8DQ10A10/AP_63_63C2DQ11 A11R7A2

C8DQ10A10/AP_63_63L7C2DQ11 A11R7A2

B8A3

NC_0NC_1NC_2NC_3

B8A3

NC_0NC_1NC_2NC_3

1234234

87658765

C7UDQS NC_4M7B7UDQS#_4_4NC_5T3F3LDQS NC_6T7G3LDQS#_28_28D3 BA0E7LDM BA1N8BA2CKH1VREFDQCK#_56_56M8VREFCACS#_62_62

C7UDQS NC_4M7B7UDQS#_4_4NC_5T3F3LDQS NC_6T7G3LDQS#_28_28D3 BA0E7LDM BA1N8BA2CKH1VREFDQCK#_56_56M8VREFCACS#_62_62

RVREF_asclosedto

L8

CAS#_61_61

L8

CAS#_61_61

1_DDR3_RST#T2RESET#_58_58ODT

2_DDR3_RST#T2RESET#_58_58ODT

8

RAS#_55_55J3WE#_54_54CKE

RAS#_55_55J3WE#_54_54CKE

A5

6

4

5

A8VDDQ_0VSSQ_0C1VDDQ_1VSSQ_1

A1VDDQ_0VSSQ_0A8VDDQ_1VSSQ_1

234

C9VDDQ_2VSSQ_2D8D2VDDQ_3VSSQ_3E2E9VDDQ_4VSSQ_4E8F1VDDQ_5VSSQ_5H2VDDQ_6VSSQ_6

C1VDDQ_2VSSQ_2D1C9VDDQ_3VSSQ_3D8D2VDDQ_4VSSQ_4E2E9VDDQ_5VSSQ_5F1VDDQ_6VSSQ_62_DDR3_RST#

H9VDDQ_7VDDQ_8

H2VDDQ_7VSSQ_7H9VDDQ_8VSSQ_8

412342

5876587

B2VDD_0VSS_0A9D9VDD_1VSS_1B3G7VDD_2VSS_2E1K2VDD_3VSS_3G8K8VDD_4VSS_4J2N1VDD_5VSS_5J8N9VDD_6VSS_6M1R9VDD_8VSS_7R1 VSS_8VSS_9

B2VDD_0VSS_0A9D9VDD_1VSS_1B3G7VDD_2VSS_2E1K2VDD_3VSS_3G8K8VDD_4VSS_4J2N1VDD_5VSS_5J8N9VDD_6VSS_6M1R9VDD_8VSS_7R1VDD_7VSS_8

AVDD33_MEMPLLAVSS33_MEMPLL

4

5

VSS_10VSS_11

TerminationforCloseto

CAPsforDRAMIOPower(BeneaththeMainChip

CAPsforDRAMIOPower(BeneaththeDDR#1

Chip

C551

ChipC553 C553

4.7u/10V100n/16V

CAPs

IOPower

theDDR#2

Chip

4.7u/10V100n/16V100n/16V

C589 1.25x_1+22/100_=

4.7u/10V100n/16V/NC100n/16V100n/16V/NC100n/16V100n/16V4.7u/10V100n/16V100n/16V/NC100n/16VRVREF_asclosedto

4,5,6,7,8,10,11,12

4,5,8,11,12

C100C145

DDR

DRAMPower

L41

4,5,8,11,12

22u/6.3V

SS8C42

6

FB99

og

100R

W1

4,5,8,11,12

1

4,5,6

AB24

4,5,6,7,8,9,11,12

_RX

100R

AB25 100R 33R

port

2

I/O1_3IC2GNDI/O1_3IC2GNDI/O3_2

6

23I/O1_3IC2I/O1_3IC2GNDI/O3_2

54 R223

RX_0_1B

5

13CLK-19+5V_17

133

_0_HPD3322

portR249

23DATA2-456DATA1-781112CLK-151617

I/O1_3I/O1_3IC2GNDI/O3_22

65

1

33

_1_HPD

1819

1I/O1_3IC2GNDVCCI/O3_2IC1

22 MV40

預(yù)留WIFIDEMOD_RST

ETHERNET

BypassCAP,closetoeachindicatedpinofFE1.1,andshouldnotberemoved.

V11

AA9

EQUALLENGTH

AA6 AB7

AE2

1

HP_MUTE_CTRL_ICAMP_MUTE

AB9

AD3 AE3

IMPEDANCE 3

U6V6Y6

7676 0F23AMP-

AE1AD4AVDD33_ETH

USB3_WIFI+

66,86,884

BL_ON_OFF

2

4

AE4

OPCTRL3OPCTRL4 1C9910u/16V

G22 F22

ETHERNET

10k/NCR690

55,6,85,6,844

USB_DM_P10VCCD-D+

6

GND_4

1

5

2

15

2NTX0-3

2

NC4 NC3

3NRX0+_264644