Texet T-990a Schematic

COVER

5

4

3

2

1

BLOCK

D D

MPU

PMU

AXP209

LCD USB0 OTG

G-Sensor

USB1 WIFI

TP

Interconnect Network,and Power Driven

MOTORCARD HEADPHONESPEAKER

CIM ISCNANDDDR3

GPIO ASSIGNMENT

Define noitcnuFUPC

PB0

C

PB1

PB2

PB3

PB4

PB10

PB15

PB16 PB17

PB18

PG0

PG1

PG2

PG3

B

PG4

PG9

PG10

PG11

PG12

PMU Define Function

GPIO0

GPIO1

GPIO2

GPIO3

TWI0_SCK

TWI0_SDA

PWM0

GPIO-OUT

NC

GPIO-OUT

TWI1_SCK

TWI1_SDA

TWI2_SCK

TWI2_SDA

INPUT

GPIO-IN

UART-TX

UART-RX

GPIO-OUT

EINT

GPIO-OUT

KEY

TWI0

LCD

TP-WAKE-RST

CSI-STY

TWI1

TWI2

SD0-DET-N

USB0-VBUSDET

USB0-IDDET

UART-TX

UART-RX

MT-EN

PA-SHDN

TP-INT

USB0-DRV

LCD-PWR

LCD-BL-EN

CSI-PWR-EN

CSI-RST

POWER TREE

DRAM

ACIN(5V)2A

USBVBUS （5V-900mA）

BAT(4.2V)

3V3@1A

LP3992-18B5F AP1231B18ZRM AP1231B28ZRM

1V8@1A

CSI-CORE

LP3992-28B5F

2V8@1A

CSI-IO

Battery charger /detect

IPSOUT 5V-2A

CARD NAND G-SENSOR TP MOTOR

DCDC2 CPU VDD

1V2@1.6A

1V2@1.2A

LDO1

3V3@30mA

3V@200mA

AXP209

LDO3

5V@1A

3V3@400mA

9V9@1A 10V4@1A

CORE VDDDCDC3

RTC

AVCCLDO2

WIFI

LCD AVDDLCD BLUSB OTG

REVISION HISTORY

C

B

APP3_PAD_DDR3_V1_20

A

ApprovedDrawn CheckedDateDescriptionRevision

version 1.20

5

4

3

CPL

A

Title

APP3_PAD_DDR3

veRemaN tnemucoDeziS

COVER

A3

COVER

A3

COVER

A3

of

1 6

teehS:etaD of

1 6

teehS:etaD of

1 6

2

teehS:etaD

1

veRemaN tnemucoDeziS

5

6

TPY2 TPX2

LRADC

VMIC

MICIN1

VRA1 VRA2 AVCC

VRP

AGND

HPOUTR

HPCOM V33_HP

HPBP

HPOUTL

VDD2_INT

DDR3_ODT

DDR3_A7

DDR3_RST

DDR3_A9

DDR3_A13

DDR3_A5 DDR3_A2 DDR3_A3 DDR3_A0

DDR3_BA0

VCC5_DRAM

DDR3_BA2

DDR3_WE DDR3_CAS DDR3_RAS

DDR3_A14

DDR3_A11

DDR3_A8 DDR3_A6

VCC4_DRAM

DDR3_A1

DDR3_A4 DDR3_A12 DDR3_BA1 DDR3_A10

DDR3_CKE

DDR3_CK_N

DDR3_CK

3

DRAM

SVREF

C148

0.1uF

5

0.1uF

C0402

AUDIO-TP

RESET-N3

LRADC6

C156

C156 1nF

1nF

C0402

88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45

CORE-VDD

DRAM-VCC

VRA1 VRA2 AVCC VRP

GND

HPVCC

HPBP

SA7

SA9 SA13 SA5 SA2 SA3 SA0 SBA0

SBA2

SA14 SA11 SA8 SA6

SA1 SA4 SA12 SBA1 SA10

TPY2 5

TPX2 5 LRADC 6 VMIC 6 MICIN1 6

HPR 6 HPCOM 6

HPL 6

SODT 4

SRST 4

SWE 4 SCAS 4 SRAS 4

SCKE 4 SCK-N 4 SCK 4

VCC-3V3 HPVCC

USB

CPU

CPUVDD

C171

C171 10uF

10uF

C0603

GND

5

4

CPU

SDQ[15:0]

SDQ[15:0]4

SA[14:0]

SA[14:0]4

SBA[2:0]

SBA[2:0]4

HPVCC

D D

AVCC

UVCC

DRAM-VCC

CPUVDD

COREVDD

VCC-3V3

GND

LCD-D205 LCD-D195 LCD-D185 LCD-D155 LCD-D145 LCD-D135 LCD-D125 LCD-D115

C

B B

LCD-D105

LCD-D75 LCD-D65 LCD-D55 LCD-D45 LCD-D35 LCD-D25

TP-WAKE-RST5 CSI-RST-15 CSI-STY-16

USB0-IDDET6

USB0-VBUSDET6

SD0-DET-N4

UBOOT6

NMI-N3 RESET-N3 TWI2-SDA6 TWI2-SCK6 NDQS4

NRB1-N4 NRB0-N4

ND[7:0]4

HPVCC

AVCC

UVCC

DRAM-VCC

CPU-VDD

CORE-VDD

VCC GND

ND[7:0]

VCC

CORE-VDD

CPU-VDD

VCC

CPU-VDD

ND7 ND6 ND5 ND4

CPU-VDD

ND3 ND2 ND1

CPU-VDD

ND0

U1

133

LCD_D20

134

LCD_D19

135

LCD_D18

136

LCD_D15

137

LCD_D14

138

LCD_D13

139

LCD_D12

140

LCD_D11

141

LCD_D10

142

VCC3

143

LCD_D7

144

LCD_D6

145

LCD_D5

146

LCD_D4

147

LCD_D3

148

LCD_D2

149

VDD5_INT

150

PB3/EINT17

151

PG4/UART1_RX/EINT4

152

PG3/UART1_TX/EINT3

153

PG2/EINT2

154

PG1/EINT1

155

PG0/EINT0

156

VDD5_CPU

157

UBOOT

158

NMI_N

159

RESET_N

160

PB18

161

PB17

162

NDQS

163

VCC4

164

VDD6_CPU

165

NDQ7/SDC2_D7

166

NDQ6/SDC2_D6

167

NDQ5/SDC2_D5

168

NDQ4/SDC2_D4

169

VDD7_CPU

170

NDQ3/SDC2_D3

171

NDQ2/SDC2_D2

172

NDQ1/SDC2_D1

173

VDD8_CPU

174

NDQ0/SDC2_D0

175

NRB1/SDC2_CLK

176

NRB0/SDC2_CMD

LCD-DE

LCD-HSYNC

LCD-CLK

LCD-D215LCD-D22

132

LCD-VSYNC

LCD-D23

131

130

128

125

129

127

126

LCD_DE

LCD_D21

LCD_D22

LCD_D23

LCD_CLK

LCD_VSYNC

LCD_HSYNC

5

6

CSI-D2

CSI-D0

CSI-D1

CSI-D36CSI-D46CSI-D56CSI-D66CSI-D7

CSI-VSYNC

CSI-HSYNC

123

122

121

124

CSI_D6/UART1_TX

CSI_D5/SDC2_CLK

CSI_D7/URAT1_RX

CSI_D4/SDC2_CMD

115

116

120

119

118

117

CSI_D3/SDC2_D3

CSI_D2/SDC2_D2

CSI_D1/SDC2_D1

CSI_D0/SDC2_D0

CSI_VSYNC/SPI2_MISO

CSI_HSYNC/SPI2_MOSI

CSI-PCLK

CSI-MCLK

113

114

CSI_PCLK/SPI2_CS0/EINT14

CSI_MCLK/SPI2_CLK/EINT15

6

SD0-CLK

SD0-CMD

SD0-D24SD0-D3

CORE-VDD

110

109

111

112

SDC0_D2

SDC0_D3

SDC0_CLK

SDC0_CMD

TQFP177P0_4

6

4

6

4

PWM0

TWI0-SCK

SD0-D04SD0-D1

108

VDD4_INT

TWI0-SDA

TWI1-SDA

TWI1-SCK

VCC

102

101

104

103

100

107

106

105

PB16

SDC0_D0

SDC0_D1

99

PB15

VCC2

TWI0-SDA

TWI0-SCK

PB4/EINT18

PB2/EINT16

5,6

UVCC

CORE-VDD

97

98

96

NC

V33_USB

VDD3_INT

3

5

DP0

DP1

DM0

DM1

X24MI

94

95

93

92

UDP1

UDP0

UDM1

UDM0

6

TPX1

TPY1

X24MO

91

89

TPY190TPX1

X24MIN

X24MOUT

GND

C172

C172 1uF

1uF

C0402

DRAM-VCC

C142

C142 10uF

10uF

C0603

GNDGND

C157

0.1uF

C0402

GND

C160

0.1uF

C0402

C173

C173 1uF

1uF

C0402

2

CRYSTAL

C36

GND

C35

0.1uF

C0402

C153

0.1uF

C0402

C176

0.1uF

C0402

C36

0.1uF

C0402

C161

C161 1nF

1nF

C0402

C154

4.7uF

C0603

C177

0.1uF

C0402

C162

C162 1nF

1nF

C0402

GPIO

VCC-3V3

C167

C167 10uF

10uF

C0603

GND

C178

0.1uF

C0402

VRA2

R95

C155

200K1%

0.1uF

R0402

C0402

GND GND

TPY25

TPY15

C168

C168 1uF

1uF

C0402

DGND

CORE

COREVDD

GND

C33

C33 1uF

1uF

C0402

UVCCVCC-3V3

GND

C174

C174 1uF

1uF

C0402

C166

0.1uF

C0402

TPX25

TPX15

C34

C34 1uF

1uF

C0402

VRP

C152

C152 10uF

10uF

C0603

C175

0.1uF

C0402

C49

C49 10uF

10uF

C0603

X24MI

X24MO

C163

C163 1nF

1nF

C0402

C169

C169 1uF

1uF

C0402

C150

C150 1uF

1uF

C0402

MICM6

1

C164

C164 1nF

1nF

C0402

C170

0.1uF

C0402

C181

C181 1uF

1uF

C0402

3

1

VRA1

223

C158

C158 10uF

10uF

C0603

C149

C149 18pF

18pF

C0402

X1

X1 24MHz

24MHz

CRS_3X8

C179

C179 18pF

18pF

C0402

HPBP

C182

0.1uF

C0402

C151

C0402

1uF

R124

R124 0R

0R

R0402

GND

GNDGND GNDGND GND

C183

0.1uF

C0402

C159

0.1uF

C0402

C

177

GND

DRAM-VCC

R89

C82

2K1%

0.1uF

R0402

C0402

R91

R91 2K1%

2K1%

R0402

GND

C0402

C84

0.1uF

C0402

SVREF

A

GND

NRE

A13

5

1

CPU-VDD

NRE-N

NCE1-N4NCE0-N

A13

NCE02NCE1/SPI0_CS03VDD1_CPU4VCC15NCLE/SPI0_CLK6NALE/SPI0_MISO7NWE/SPI0_MOSI8VDD2_CPU9VDD3_CPU11PG9/SPI1_CS0/UART3_TX/EINT912PG10/SPI1_CLK/UART3_RX/EINT1013PG11/SPI1_MOSI/UART3_CTS/EINT1114PG12/SPI1_MISO/UART3_RTS/EINT1215VDD4_CPU16DZQ17SVREF18DDR3_D419DDR3_D620DDR3_D221DDR3_D022VCC1_DRAM23DDR3_D1124DDR3_D925DDR3_D1326DDR3_D1527DDR3_DM128DDR3_DM029VCC2_DRAM30DDR3_DQS031DDR3_DQS0_N32DDR3_DQS133DDR3_DQS1_N34VDD1_INT35DDR3_D1236DDR3_D837DDR3_D1438DDR3_D1039DDR3_D140DDR3_D341DDR3_D742VCC3_DRAM43DDR3_D5

PB10/EINT24

10

MT-EN

4

TP-INT

PA-SHDN

R94

240R1%

R0402

SZQ

CPU-VDD

4

USB0-DRV

GND

SDQS0

SDQS0-N4SDQS1-N

CORE-VDD

SDQS1

SDQ9

4

SDQ11

SDQ15

SDQ1

SDQ3

SDQ7

SDQ5

SDQ8

SDQ12

SDQ14

6

5

4

SDQ10

DRAM-VCC

3,6

DRAM-VCC

SDQM04SDQM1

SVREF

5

6

VCC

CPU-VDD

4

NALE

NCLE

NWE-N

CSI-STY

44

SDQ0

SDQ2

SDQ6

SDQ4

SDQ13

DRAM-VCC

4

CSI-IOVDD

3

RTC

TWI-PULLUP

VCC-3V3

R96 2K R0402R96 2K R0402 R97 2K R0402R97 2K R0402 R98 2K R0402R98 2K R0402 R99 2K R0402R99 2K R0402 R100 2K R0402R100 2K R0402 R101 2K R0402R101 2K R0402

NMI-N

2

C185 NC

C0402

TWI0-SDA 3 TWI0-SCK 3 TWI1-SDA 5,6 TWI1-SCK 5,6 TWI2-SDA 6 TWI2-SCK 6

X2

32.768KHz

CRS_3X8

3

Title

12

GND

A3

U9

1

OSCI

2

OSCO

3

nINT

4

GND

TH9563

SOIC8

APP3_PAD_DDR3

CPU

RTCVDD

PCF8563/AT8563

8

VDD

7

CLKO

6

SCL

5

SDA

C184

0.1uF

C0402

GND

TWI1-SCK TWI1-SDA

1

teehS:etaD

2 6

teehS:etaD of

2 6

teehS:etaD of

2 6

A

veRemaN tnemucoDeziS

of

5

4

3

POWER

POWER LINE:Width>=60mil

CSI-PWR-EN6

CSI-RST6

VCC-3V3

IPSOUT

COREVDD

AVCC

CPUVDD

WIFI-3V3

RTCVDD

VCC-3V3

R108

R108 10K

10K

R0402

D1

D1 IN5819

IN5819

SOD123

R113

R113 47K

47K

SW2 KEY4_HS

R0402

ED1 Vari D0402ED1 Vari D0402

GND

U2

U2 AXP209

AXP209

QFN_48

39

BAT2

38

BAT1

CHSENSE

PGND1

VIN1

DCDC2 PGND2

VIN2

DCDC3 PGND3

VIN3

LDO24IN

LDO1

LDO2

LDO3

LDO3IN

LDO4

PWROK

LDO1SET

DC3SET

OPTION

LX1

LX2

LX3

42

43

45

46 44

8 10 9 7

15 17 16 14

13

28

12

41

40

11

VCC-3V3

25

27 29

IPSOUT

R114 47K R0402R114 47K R0402

VINT

C189 4.7uF C0603C189 4.7uF C0603

L2 4.7uH L3x3L2 4.7uH L3x3

C195

C195 10uF

10uF

C0603

L4 4.7uH L3x3L4 4.7uH L3x3

IPSOUT

LDO1

AVCC-3V

LDO3IPSOUTIPSOUT

IPSOUT

L1

4.7uH

L3x3

CPU-1V2

C193

C193 10uF

10uF

C0603

C203 10uF C0603C203 10uF C0603

C205 1uF C0402C205 1uF C0402

C207 4.7uF C0603C207 4.7uF C0603

C209 4.7uF C0603C209 4.7uF C0603

C214 10uF C0603C214 10uF C0603

RESET-N 2

C217

C217 1uF

1uF

C0402

GND

C201

C201 10uF

10uF

C0603

C194

C194 1nF

1nF

C0402

INT-1V2

GND

R104 0R03 R0805R104 0R03 R0805

GND

BATSENSE

IPSOUT

2 4

GND

IPSOUT

USBVBUS

1R

R0402

VINT

R115

R115 510R

510R

R0402

37

TS

34

PS1

35

PS2

33

ACIN2

32

ACIN1

31

VBUS

3

GPIO3

5

GPIO2

49

THERMAL

36

CHGLED/GPO

30

BACKUP

26

VINT

23

BIAS

22

AGND

24

VREF

21

APS

19

GPIO0/LDO

18

GPIO1

20

EXTEN

47

PWRON

4

N_OE

6

N_VBUSEN

48

IRQ

2

SCK

1

SDA

SW1

1 3

RESET

KEY4_HS

R103 100R R0402R103 100R R0402

GND

C192

C192 22uF

22uF

C0805

GND

ACIN-5V

R202

R202 1R

1R

R0402

C196

10uF

C0603

GND

C206 1uF C0402C206 1uF C0402

GND

LCD-PWR5

LCD-BL-EN5

2

1

POWER

2

1

4

3

4

3

R107

C200

10uF

C0603

GND

R112 200K1% R0402R112 200K1% R0402

C208 1uF C0402C208 1uF C0402

C213

4.7uF

C0603

GND

EXTEN

R2 1K R0402R2 1K R0402

C3 1nF C0402C3 1nF C0402

GND

ED2

Vari

D0402

BAT

C187 1uF C0402C187 1uF C0402

C190

4.7uF

C0603

GND

C202

C202 1nF

1nF

C0402

C191

4.7uF

C0603

IPSOUT

GND

C216

C216 10uF

10uF

C0603

EXTEN

GND

AVCC

R254

100K

R0402

R255

100K

R0402

IPSOUT

INT-1V2

D D

AVCC-3V

CPU-1V2

LDO3

LDO1

VCC-3V3

C

B

USB0-DRV2,6

NMI-N2 TWI0-SCK2 TWI0-SDA2

C275

C275 10uF

10uF

C0603

C255

C255 10uF

10uF

C0603

2

J15

NC

CON2P_2

R242

R242 1K

1K

R0402

R198

R198 1K

1K

R0402

L9

6.8uH

L3x3

EXTEN

R256

R256 100K

100K

R0402

GND GND

GND

1

2

R253

100K

R0402

R213

100K

R0402

7

5

6

1

9

U32

SW

BATT

LBI

EN

GND2

LP6251

EMSOP8

TP104

TP1MM

GND

U27

U27 LP3220

LP3220

SOT23_5

4

VIN

2

GND

1

EN

U26

U26 LP3220

LP3220

SOT23_5

4

VIN

2

GND

EN1FB/VOUT

OUT

GND

C211

10uF

C0603

FB/VOUT

LBO

FB

GND

LX

2

100K1%

4

3

8

BAT

C280

0.1uF

C0402

R257

R0402

1

DRAM-VCC

L21

3

5

3

5

L20

R203

R203 140K1%

140K1%

R0402

R204

R204 15K1%

15K1%

R0402

VCC-5V

GND

2.2UH

L3x3

C277

C277 68pF

68pF

C0402

2.2UH

L3x3

C273

C273 68pF

68pF

C0402

5.16V

C278

C278 68pF

68pF

C0402

C234

C234 10uF

10uF

C0603

R252

300K1%

R0402

R251

200K1%

R0402

R201

442K1%

R0402

R200

100K1%

R0402

C218

C218 10uF

10uF

C0603

GND

VCC-3V3

C300

0.1uF

C0402

C210

10uF

C0603

C204

10uF

C0603

TP84

TP1MM

C0402

TP83

TP1MM

C0402

C274

0.1uF

C245

0.1uF

C

B

A

5

GND

Title

APP3_PAD_DDR3

POWER

A3

POWER

A3

POWER

A3

of

3 6

teehS:etaD of

3 6

teehS:etaD of

3 6

4

3

2

teehS:etaD

1

A

veRemaN tnemucoDeziS

5

MEMORY

DDR3

SDQ[15:0]

SDQ[15:0]2

SA[14:0]

D D

C

B B

A

SA[14:0]2

SBA[2:0]

SBA[2:0]2

SRST2

SODT2

SCK-N2

SDQM02 SDQM12

SWE2 SRAS2 SCAS2 SCKE2

SDQS02

SDQS0-N2

SDQS12

SDQS1-N2

SCK DSCK

SCK-N

SBA0

R73 24R1% R0402R73 24R1% R0402

SBA1

R75 24R1% R0402R75 24R1% R0402 R78 24R1% R0402R78 24R1% R0402

SBA2

R80 24R1%R0402R80 24R1%R0402

SCAS SRAS

R82 24R1%R0402R82 24R1%R0402

SCKE

R84 24R1%R0402R84 24R1%R0402

SWE

R87 24R1%R0402R87 24R1%R0402

SA0

R46 24R1%R0402R46 24R1%R0402

SA1

R48 24R1%R0402R48 24R1%R0402

SA2

R43 24R1%R0402R43 24R1%R0402

SA3

R44 24R1%R0402R44 24R1%R0402

SA4

R34 24R1%R0402R34 24R1%R0402

SA5

R36 24R1%R0402R36 24R1%R0402

SA6

R38 24R1%R0402R38 24R1%R0402

SA7

R51 24R1%R0402R51 24R1%R0402

SA8

R53 24R1%R0402R53 24R1%R0402

SA9

R55 24R1%R0402R55 24R1%R0402

SA10

R39 24R1%R0402R39 24R1%R0402

SA11

R45 24R1%R0402R45 24R1%R0402

SA12

R59 24R1%R0402R59 24R1%R0402

SA13

R41 24R1%R0402R41 24R1%R0402 R61 24R1%R0402R61 24R1%R0402

SA14

DRAM-VCC

R86

2K1%

R0402

DRAM-REF

R90

2K1%

R0402

GND

SDQ5 SDQ7 SDQ3 SDQ1

RCA50-8

SDQ4 SDQ6 SDQ2

RCA50-8

SDQ0

SDQ8 SDQ10 SDQ14

RCA50-8

SDQ12

SDQ13 SDQ15 SDQ11 SDQ9

RCA50-8

SCK

SCK2

SCK-N

SDQM0 SDQM1 SWE SRAS SCAS SCKE

SDQS0 SDQS0-N SDQS1 SDQS1-N

R6524R1%R0402 R6524R1%R0402 C221

C0402

NC

C109

R6824R1%R0402 R6824R1%R0402

C81

0.1uF

C0402

C83

0.1uF

C0402

RN1

24R*4/1%

5 6

RN3

24R*4/1%

RN5

24R*4/1%

RN6

24R*4/1%

8

DSCK-NDSCK-N

BA0 BA1 BA2

CAS RAS

CKE

WE

A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14

5

SDQM0

SDQS0 SDQS0-N

45 36 27 18

4 3 27 18

45 36 27 18

45 36 27 1

SD0-D22 SD0-D32

SD0-CMD2

SD0-CLK2

SD0-D02 SD0-D12

SD0-DET-N2

SD0-CLK SD0-D3

GND

R63 24R1% R0402R63 24R1% R0402

R66 24R1% R0402R66 24R1% R0402 R69 24R1% R0402R69 24R1% R0402

GND

DQ5 DQ7 DQ3 DQ1

DQ4 DQ6 DQ2 DQ0

DQ8 DQ10 DQ14 DQ12

DQ13 DQ15 DQ11

DQ9

VCC-3V3

SC1

SC1 10uF

10uF

C0603

R71 24R1% R0402R71 24R1% R0402

DEB1

1

UART0-TX

2

UART0-RX

3

GND

NC

SIP3_20

DQS0 DQS0-N

SODT

BA0 BA1 BA2

CAS RAS

DSCK DSCK-N

CKE

WE

SRST

DRAM-REF

R92

R92 240R1%

240R1%

A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14

R116

R117

47K

R0402

GND

ED4 Vari D0402ED4 Vari D0402

ED3 Vari D0402ED3 Vari D0402

GND VCC-3V3

DRAM-VCC

C85

C86

C87

0.1uF

C0402

GND GND

M9 M3

M4

M8

G2

G4

G8

G10

A11

F10

H10

N11

0.1uF

C0402

U8

K4

A0

L8

A1

L4

A2

K3

A3

L9

A4

L3

A5 A6 A7

N9

A8 A9

H8

A10/AP A11

K8

A12/BC#

N4

A13

N8

A14

B8

DM/TDQS

A8

NF/TDQS

C4

DQS

D4

DQS

ODT

J3

BA0

K9

BA1

J4

BA2

CAS

F4

RAS

H3

CS

F8

CK CK

CKE

H4

WE

N3

RESET

E2

VREFDQ

J9

VREFCA

H9

ZQ

A1

NC1

A4

NC2 NC3

F2

NC4 NC5

H2

NC6 NC7

J8

NC8

N1

NC9 NC10

H5TQ2G83CFR-H9C-256MByte

FBGA82P0_8B9_4X11_1

DDR3_8BITS-PBC

R118

R118 47K

47K

R0402

ED5 Vari D0402ED5 Vari D0402

C88

0.1uF

C0402

DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7

VDD1 VDD2 VDD3 VDD4 VDD5 VDD6 VDD7 VDD8 VDD9

VDDQ1 VDDQ2 VDDQ3 VDDQ4

VSS1 VSS2 VSS3 VSS4 VSS5 VSS6 VSS7 VSS8

VSS9 VSS10 VSS11 VSS12

VSSQ1 VSSQ2 VSSQ3 VSSQ4 VSSQ5

4

ED6 Vari D0402ED6 Vari D0402

C89

0.1uF

C0402

4

R119

R119 47K

47K

R0402

ED7 Vari D0402ED7 Vari D0402

C90

C0402

B4 C8 C3 C9 E4 E9 D3 E8

A3 A10 D8 G3 G9 K2 K10 M2 M10

B10 C2 E3 E10

A2 A9 B2 D9 F3 F9 J2 J10 L2 L10 N2 N10

B3 B9 C10 D2 D10

R120

R120 47K

47K

R0402

0.1uF

DQ5 DQ0 DQ7 DQ2 DQ1 DQ4 DQ3 DQ6

DRAM-VCC

GND

R121

R121 47K

47K

R0402

ED9 Vari D0402ED9 Vari D0402

ED8 Vari D0402ED8 Vari D0402

SDQM1

SDQS1 SDQS1-N

SU1

1

DAT2

2

DAT3

3

CMD

4

VDD

5

CLK

6

VSS2

7

DAT0

8

DAT1

9

CD#

MICROSD/TF_SLOT

TFCARD

DRAM-REF

C95

C96

0.1uF

C0402

GND

R64 24R1% R0402R64 24R1% R0402

R67 24R1% R0402R67 24R1% R0402 R70 24R1% R0402R70 24R1% R0402

GND

GNDGND

GND GND GND GND

13 12 11 10

DQS1 DQS1-N

SODT

BA0 BA1 BA2

CAS RAS

DSCK DSCK-N

CKE

WE

SRST

DRAM-REF

R93

R93 240R1%

240R1%

GND

DRAM-VCC

A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14

3

DNANDRAC

NRB1-N2 NRB0-N2

ND[7:0]2

NDQS2

C99

C97

C98

0.1uF

C0402

M9 M3

M4

M8

G10

A11

F10

H10

N11

0.1uF

C0402

U7

K4

A0

L8

A1

L4

A2

K3

A3

L9

A4

L3

A5 A6 A7

N9

A8 A9

H8

A10/AP A11

K8

A12/BC#

N4

A13

N8

A14

B8

DM/TDQS

A8

NF/TDQS

C4

DQS

D4

DQS

G2

ODT

J3

BA0

K9

BA1

J4

BA2

G4

CAS

F4

RAS

H3

CS

F8

CK

G8

CK

CKE

H4

WE

N3

RESET

E2

VREFDQ

J9

VREFCA

H9

ZQ

A1

NC1

A4

NC2 NC3

F2

NC4 NC5

H2

NC6 NC7

J8

NC8

N1

NC9 NC10

H5TQ2G83CFR-H9C-256MByte

FBGA82P0_8B9_4X11_1

3

C100

0.1uF

C0402

C101

C0402

DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7

VDD1 VDD2 VDD3 VDD4 VDD5 VDD6 VDD7 VDD8 VDD9

VDDQ1 VDDQ2 VDDQ3 VDDQ4

VSS1 VSS2 VSS3 VSS4 VSS5 VSS6 VSS7 VSS8

VSS9 VSS10 VSS11 VSS12

VSSQ1 VSSQ2 VSSQ3 VSSQ4 VSSQ5

VCC-3V3

R122

R122 10K

10K

R0402

NRE-N2 NCE0-N2 NCE1-N2

NCLE2

NALE2

NWE-N2

ND[7:0]

C102

0.1uF

C0402

B4 C8 C3 C9 E4 E9 D3 E8

A3 A10 D8 G3 G9 K2 K10 M2 M10

B10 C2 E3 E10

A2 A9 B2 D9 F3 F9 J2 J10 L2 L10 N2 N10

B3 B9 C10 D2 D10

VCC-3V3

R123

R123 10K

10K

R0402

NWP-N

GND GND

0.1uF

DQ8 DQ9

DQ10 DQ11 DQ12 DQ13 DQ14 DQ15

DRAM-VCC

GND

U14

1

RES#

2

NC2

3

NC3 RB4#4NC19

5

RB3#

6

RB2#

7

RB1#

8

RE#

9

CE1#

10

CE2#

11

NC4

12

VCC1

13

VSS1

14

CE3#

15

CE4#

16

CLE

17

ALE

18

WE#

19

WP#

20

NC5

21

NC6

22

NC7

23

NC8

24

NC9

NAND FLASH X8

TSOP48

C220

0.1uF

C0402

GND VCC-3V3

C223

0.1uF

C0402

GND

ND0 ND1 ND2 ND3 ND4 ND5 ND6 ND7

C221

0.1uF

C0402

C224

0.1uF

C0402

OA1 OE1 OA9

OC1

A2 E8 A8 C6 C4 M5 K5 G2

J2

L2 N4 N6

L8

J8 G8

E2 G6 D3 D5 D7

G4 H3

J4 K3

L6 K7

J6 H7

NC22 NC21 NC20

NC18 NC17 VSS3

VCC2

VSS2 NC16 NC15 NC14

NC13 NC12 NC11 NC10

48 47 46 45 44

IO7

43

IO6

42

IO5

41

IO4

40 39 38 37 36 35 34 33 32

IO3

31

IO2

30

IO1

29

IO0

28 27 26 25

VCC-3V3

R209

R209 10K

10K

R0402

C222

0.1uF

C0402

GND

U16

N/U1 N/U2 N/U3 N/U4 N/U5 N/U6 N/U7 N/U8 N/U9 N/U10 N/U11 N/U12 N/U13 N/U14 N/U15 N/U16 N/U17 N/U18 N/U19 N/U20 N/U21 N/U22 N/U23 N/U24

DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7

TOGGLE NAND

NAND_LGA60

2

TSDD0 TSDD1 TSDD2

TSDCLK

NWP-N

VCCQ1 VCCQ2 VCCQ3 VCCQ4 VCCQ5 VCCQ6

VCC1 VCC2

VSSQ1 VSSQ2 VSSQ3 VSSQ4 VSSQ5 VSSQ6

VSS1 VSS2

CLE

ALE

VREF

VPP

DQS DQS

2

ND7 ND6 ND5 ND4

RE RE

WP WE

CE

R/B

VCC-3V3

VPS

TSDCMD ND3 ND2 ND1 ND0

TSDD3

VCC-3V3

GND

OD1 OF1 OB9 OG9 N8 N2 B7 M7

OB1 OG1 OD9 OF9 F7 L4 B3 M3

B5 C8

A4 F3 E4 A6 C2 E6 OC9 OE9

H5 F5

tSD

VCC-3V3

GND

R210

R210 NC

NC

R0402

VPS

R211

R211 NC

NC

R0402

VCC-3V3

NWP-N

NRB0-N

C219

0.1uF

C0402

GND

NRE-N 2

NCLE 2

NWE-N 2 NCE0-N 2

NALE 2

NDQS 2

Title

A3

APP3_PAD_DDR3

MEMORY

1

NRB1-N TSDCLK NRB0-N TSDCMD

ND3 TSDD3 ND2 TSDD2 ND1 TSDD1 ND0 TSDD0

4 6

teehS:etaD of

4 6

teehS:etaD of

4 6

teehS:etaD

1

veRemaN tnemucoDeziS

of

C

A

5

4

3

2

1

DISPLAY

LCD

C226

C225

1nF

10uF

C0603

C0402

R0402

PWM0

R145

R145 100K1%

100K1%

R0402

C244

C244 1uF

1uF

C0402

R232

R232 100R

100R

R0402

C0402

GND

R131

4K7

GND

R136

R136 220R

220R

R0402

OPTION

C37

10uF

C0603

C2

C2 NC

NC

C0402

GND

C238

0.1uF

C0402

1

R146

510K

R0402

VDD33D_TP

DGND

D D

C239

C239 10uF

10uF

C0603

R230

47K

R0402

NC

SOT23_3

R139 NC R0402R139 NC R0402

R138

R138 0R

0R

R0402

C251

C251 10uF

10uF

C0603

GND

R231

0R R0402

Q8

WPM2026

5

MT-EN2

LCD-BL-EN3

PWM02

C

VCC-3V3

GND

LCD-PWR3

B

VCC-3V3

A A

CSI-RST-12

LCD Block 4.3" 480*272

L6

1 2

10uH

L3x3

U18

LCD_VDD33D

R132

R132 4K7

4K7

R0402

D12

D12 NC

NC

SOD123

IN4727(3V)

GND

R141

Q2

510K

WPM2026

R0402

SOT23_3

32

Q3

SOT23_3

MMBT3904

GND

TWI1-SCK2,6 TWI1-SDA2,6 TP-INT2 TP-WAKE-RST2

R137

R137 4K7

4K7

R0402

C240

C240 10uF

10uF

C0603

6 4

LP3382

SOT23_6

C232

C232 10uF

10uF

C0603

TP1MM

VDD EN GND2FB

TP54

C250

C250 10uF

10uF

C0603

TPY22

GND

TPY12

TPX22

TPX12

1

LX

5

OVP

3

由

20K>>27K

R212

R212 20K

20K

R0402

C241

0.1uF

C0402

R214 0R R0402R214 0R R0402 R217 0R R0402R217 0R R0402 R215 0R R0402R215 0R R0402 R216 0R R0402R216 0R R0402

TP57

TP1MM

TP65

TP1MM

4

C228

4.7uF/25V

C1206

R129

R129 2K2

2K2

R0402

GND

TP50

TP1MM

VDD33D_TP

GND

VLED+IPSOUT

GND

TP51

TP1MM

D11

IN5819

SOD123

Vfb = 100mv : R = 47K Vfb = 200mv : R = 20K Vfb = 300mv : R = 13K

LCD_VDD33D

R142

C242

10K

0.1uF

R0402

C0402

TP49

TP1MM

TP69

TP1MM

TP55

TP1MM

TP56

TP1MM

TP23

TP1MM

C227

0.022uF

C0402

R127

2.2R1%

R0402

GND

TP48

TP1MM

J8 FPC6P

1

VDD

2

SCL

3

SDA

4

INT

5

OPION

6

GND

TP52

TP1MM

GND

LCD-D232 LCD-D222 LCD-D212 LCD-D202 LCD-D192 LCD-D182

YP XM YM XP

fpc6p_05

G17G2

8

GND

TP53

TP1MM

R130

R130 NC

NC

R0402

3

VLED+

GND

VLED-

GND

LCD-D152 LCD-D142 LCD-D132 LCD-D122 LCD-D112 LCD-D102

LCD-CLK2 LCD-DE2 LCD-HSYNC2 LCD-VSYNC2

LCD-VSYNC LCD-HSYNC LCD-CLK

C253

100pF

C0402

C252

100pF

C0402

LCDD15 LCDD14 LCDD13 LCDD12 LCDD11 LCDD10

LCDD23 LCDD22 LCDD21 LCDD20 LCDD19 LCDD18

R128 47R R0402R128 47R R0402 R126 47R R0402R126 47R R0402 R125 47R R0402R125 47R R0402

LCD-D72 LCD-D62 LCD-D52 LCD-D42 LCD-D32 LCD-D22

LCD-CLK LCD-DE LCD-HSYNC LCD-VSYNC

TP59

TP1MM

DGND

EDDCLED-DCL LCDVSYNC LCDHSYNC

LCDCLK

C180

C180 18pF

18pF

DGND

Title

LCD_VDD33D

GND

C186

C186 18pF

18pF

APP3_PAD_DDR3

DISPLAY

A4

DISPLAY

A4

DISPLAY

A4

2

LCDD7 LCDD6 LCDD5 LCDD4 LCDD3 LCDD2

LCD_VDD33D

GND

C254

C254 10uF

10uF

C0603

GND

R221

R221 10K

10K

R0402

R222

R222 NC

NC

R0402

XM

YM

XP

YP

TP1MM

VLEDVLED+

LCD_VDD33D LCDD16 LCDD17 LCDD18 LCDD19 LCDD20 LCDD21 LCDD22 LCDD23 LCDD8 LCDD9 LCDD10 LCDD11 LCDD12 LCDD13 LCDD14 LCDD15 LCDD0 LCDD1 LCDD2 LCDD3 LCDD4 LCDD5 LCDD6 LCDD7 GND LCDCLK

LCDHSYNC LCDVSYNC LCDDE

GND

TP58

Q05002-602

AT050TN33

GND

J4

1

VLED-

2

VLED+

3

DGND1

4

VDD

5

R0

6

R1

7

R2

8

R3

9

R4

10

R5

11

R6

12

R7

13

G0

14

G1

15

G2

16

G3

17

G4

18

G5

19

G6

20

G7

21

B0

22

B1

23

B2

24

B3

25

B4

26

B5

27

B6

28

B7

29

DGND2

30

DCLK

31

STBY#

32

HSYNC

33

VSYNC

34

DE

35

NC1

36

DGND3

37

NC2

38

NC3

39

NC4

40

NC5

41

GND41

42

GND42

BM800480-8545FTGB

FPC40p_05bb

teehS:etaD

5 6

1

veRemaN tnemucoDeziS

of

C

B

5

VCC-3V3

CSI-PWR-EN3

C267

C267 10uF

10uF

C0603

CSI-STY-12

R180 0RR180 0R

TP1MM

TP92

R176

R176 NC

NC

R0402

R177

R177 NC

NC

R0402

CSI-AVDD

CSI-IOVDD

CSI-1V8

CSI-PCLK2

GND

C297

0.1uF

C0402

TWI2-SCK2

CSI-1V8VCC-3V3

C272

10uF

C0603

GND

TP93

TP1MM

CSI-VSYNC2

CSI-STY2

CSI-HSYNC2

C129 18pFC129 18pF

TWI2-SDA2

R205 47RR205 47R

U25

1

VIN

2

GND

C276

10uF

C0603

GNDGND

CSI-IOVDD

R171

R171 10K

10K

R0402

C127

0.1uF

C0402

GND

CSI-MCLK2

3

CE

LP3992-18B5F

SOT23_5

GND

CSI-PWR-EN3

D D

CSI-RST3

CSI-D72 CSI-D62 CSI-D52 CSI-D42

C

CSI-D02 CSI-D32 CSI-D12 CSI-D22

VOUT

CSI-STY2

C128 18pFC128 18pF

4 5 3 6 2 1

4 5 3 6 2 7 1 8

5

4

FB

CSI-IOVDD

R175 47RR175 47R

RN13

24R*4/1%

RP4_0402

RN14

24R*4/1%

RP4_0402

R172

R172 10K

10K

R0402

7 8

GND

CSI

GNDGND

CSI-RST

4

U24

1

VIN

2

GND

3

CE

LP3992-28B5F

SOT23_5

TP1MM

GND

VOUT

FB

1 2 3 4

TP90

5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

24P-0.5-H=2.0MM

fpc24p_05

CN1

FB1

FB600R

L0603

C295

0.1uF

C0402

CSI-IOVDD

C266

10uF

C0603

GND

CSI-AVDD

C296

0.1uF

C0402

GND

C270

C270 10uF

10uF

C0603

5

R179

R179 NC

NC

4

R0402

R178

R178 NC

NC

R0402

GND

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

3

USB-OTG

VCC-5V

5V

OQ1

WPM2026

SOT23_3

USB0-DRV2,3

OR4

OR4 20K

20K

R0402

DM02

DP02

USB0-DRV2,3

USB0-VBUSDET2

USB0-IDDET2

USBVBUS

OQ2

WPM2026

SOT23_3

1

OR5

OR5 510K

510K

R0402

32

GND

OR3

OR3 510K

510K

R0402

OQ3

OQ3 MMBT3904

MMBT3904

SOT23_3

VCC-3V3

R170

R170 47K

47K

R0402

USB0-VBUSDET

C271

0.1uF

C0402

TWI1-SCK2,5 TWI1-SDA2,5

2

Differential pairs Z0= 90 ohm

TP68

TP1MM

USBVBUS

C268

0.1uF

C0402

GND DP0

USB0-IDDET

C269

C269 10uF/16V

10uF/16V

C0805

R173

R173 47K1%

47K1%

R0402

R174

R174 100K1%

100K1%

R0402

GND GND GND

G-SENSOR

PCB layout

ESDA6V8UD

U34 NC

1

IN1

OUT1

2

IN2

OUT2

9

GND1

GND2

3

IN3

OUT3

4

IN4

OUT4

ESDA6V8UD-10/TR

8 7 10 6 5

USBVBUS DM0DM0 GND DP0 USB0-IDDET

1

P1

1

VBUS

2

D-

3

D+

4

ID

5

GND

6

SHIELD1

7

SHIELD2

8

SHIELD3

9

SHIELD4

USB-MINI-SOCKET

USB_aizuo

C

HEADPHONE & SPEAKER

TP5

R183

R183 22R

22R

R0402

C284

0.1uF

C0402

C289

4.7uF

C0603

C0402

5

TP4

TP1MM

C293

0.1uF

R184

R184 22R

22R

R0402

C285

0.1uF

C0402

TP5

TP1MM

C286

0.1uF

C0402

R199

R199 4K3

4K3

R0402

C294

C294 33nF

33nF

C0402

PA-SHDN2

HPL2

TP1

TP1MM

B B

HPCOM2

MIC

VMIC

A

MICIN1

MICM

HPR2

R182

R182 22R

22R

R0402

R197 2K R0402R197 2K R0402

C292

4.7uF

C0603

TP1MM

GND

HPIN

ED10

Vari

D0402

TP6

TP1MM

ED12

ED11

Vari

D0402

MIC1

1

+

2

-

Micphone

MIC_4_5mm

Vari

ED13

Vari

D0402

KEY

AVCC

CON1

1 3 6 5 4 2

PHONEJACK STEREO SW

PJ-311

R190

R190 100K1%

100K1%

R0402

C291

C291 1nF

1nF

C0402

LRADC2

PA-SHDN

R185 4.7K R0402R185 4.7K R0402

HPIN

ED14

Vari

D0402

GND

R181 10K R0402R181 10K R0402

C301

C301 1uF

1uF

C0402

32

R192

8.2K1%

R0402

SW6

SW6 VOL+

VOL+

GND

Q6

Q6 MMBT3904

MMBT3904

SOT23_3

TP9

TP1MM

VOL-

1

3

1

3

2

4

2

4

KEY4_HS

1

C299

R186

1uF

510K

C0402

R0402

TP21

TP1MM

R191

VOL+ MENU HOME

6.8K1%

0.19V

R0402

1

3

1

3

2

4

2

4

KEY4_HS

4

HPL

HPR

R193

R193 10K1%

10K1%

R0402

SW7

SW7 VOL-

VOL-

C279

1uF

C0402

GND

R187

C282

0.39uF

C0402

C287

0.39uF

C0402

R187 20K

20K

R0402

R189

R189 20K

20K

R0402

TP10

TP1MM

R194

R194 11K1%

11K1%

R0402

1

3

SW9

1

3

NC

2

4

MENU RETUN HOME

2

4

KEY4_HS

TP11

TP1MM

ESC

0.80V

1 2 3 4

U11

VO2

SHDN#

GND

BYPASS

VDD

NC

VO1

IN-

LP4990 MSOP8

R188 33K R0402R188 33K R0402

C283 1nF C0402C283 1nF C0402

TP20

TP1MM

R195

0.98V0.6V0.39V

13K1%

R0402

1

3

SW11

1

3

NC

2

4

2

4

KEY4_HS

GND

3

8 7 6 5

NC R0402

R196

GND

TP22

TP1MM

UBOOT

C281

C281 22uF

22uF

C0805

GND

12

C298

C298 1uF

1uF

C0402

34

SW8

SW8 NC

NC

KEY4_HS

FB3

FB3 FB120R

FB120R

L0603

UBOOT 2

IPSOUT

TP8

TP1MM

TP7

TP1MM

2 1

CN6

CN6 NC

NC

SPK79

GND

VCC-3V3

C137

C137 10pF

10pF

C0402

APP3_PAD_DDR3

MISC

VCC-3V3

U38

1

RFGND

2

ANT

UM02BS

+

-

ANT1

PIX

3

1

2

ant_rf

2

GND

1

L11 2.7NHL11 2.7NH

C138

1.2pF

C0402

2

C136

1.0pF

C0402

Title

A3

U31

1

INT

2

NC VDD3SCL

MXC6225XU

U33

4

INT

2

NC VDD6SCL

NC

MXC6225XC

GND

3.3V

6

GND

5 4

3 5 1

WIFI-3V3

GND

teehS:etaD of

teehS:etaD

1

TWI1-SDA TWI1-SCK

GND

TWI1-SDA TWI1-SCK

GND

C302

0.1uF

C0402

GND GND

C290

C290 1uF

1uF

C0402

6 6

C303

C303 10uF

10uF

C0603

DP1 2 DM1 2

C288

C288 10uF

10uF

C0603

of

veRemaN tnemucoDeziS

SDA

GND

SDA

6 5

D+

4

D-

3

A

Texet T-990a Schematic

Specifications and Main Features

Frequently Asked Questions

User Manual