Product appearance description


   LQ3568 uses RK3568 quad-core 64-bit Cortex-A55 processor, 22 nm advanced technology, clocked at up to 2.0GHz, integrated dual-core architecture GPU and high-performance NPU; maximum support 8G large memory; support WiFi6, 5G/4G and other high-speed wireless Network communication; has a wealth of interface extensions, supports a variety of video input and output interfaces, and can be applied to scenarios such as smart NVR, cloud terminals, IoT gateways, and industrial control.

核心板外观

 LQ3568 core board front view


核心板外观

LQ3568 core board back view

208

 

Characteristic parameter


System Configuration

CPU

RK3568

Main frequency

Quad-core A55 (2GHz)

RAM

Standard 2GB, hardware compatible with 4GB

Memory

4GB/8GB/16GB emmc optional, standard 16GB

Power IC

Use RK809, support dynamic frequency modulation, etc.

 

Interface parameters

LCD interface

Support DSI/LVDS/EDP/HDMI interface output

Touch interface

Capacitive touch

音频interface

Support headphone speaker direct output, support recording and playback

SD card interface

2 SDIO output channels

emmc interface

Onboard emmc interface, the pins are not led out separately

Ethernet interface

Support 2 Gigabit Ethernet

USB HOST2.0 interface

2 channels HOST2.0

USB HOST3.0 interface

2 channels HOST3.0

OTG interface

1 OTG interface (multiplexed with one USB3.0)

UART interface

10 serial ports, support serial ports with flow control

PWM interface

16 PWM outputs

IIC interface

6 IIC outputs

SPI interface

4 SPI outputs

ADC interface

2 ADC outputs (6 channels are not drawn)

Camera interface

CSI/BT601/BT656/BT1120/RAW enter

 

Electrical characteristics

3.3V input voltage

5V/2A

RTC input voltage

3V/0.6uA

The output voltage

3.3V/1.5A (can be used for backplane power supply)

Operating temperature

-10~70 Spend

Storage temperature

-10~40 Spend


209


Upgrade method


LQ3568 supports the following two ways to upgrade the firmware:


Use a USB cable to upgrade the firmware


Use the USB cable to connect the motherboard to the computer, and use the upgrade tool to burn the firmware onto the motherboard.


Use MicroSD card.


Use the upgrade card creation tool to make the MicroSD card into an upgrade card, insert the upgrade card into the motherboard, power on, and the machine will automatically perform the upgrade




213


Firmware upgrade instructions


The Android operating system is installed by default on the LQ3568. If users want to run other operating systems, they need to use the corresponding firmware to write to the motherboard.


LQ3568 has a flexible starting method. Under normal circumstances, unless the hardware is damaged, the LQ3568 development board will not be bricked.


If an accident occurs during the upgrade process and the bootloader is damaged, making it impossible to upgrade again, you can still enter the MaskRom mode to repair it.


Boot memory


LQ3568 loads the system from the following memories:


eMMC interface


SDMMC interface


NOR flash interface


Start mode


LQ3568 has three startup modes:


Normal mode


Loader mode


MaskRom mode


Normal mode


Normal mode is the normal startup process. Each component is loaded in turn and enters the system normally.


Loader mode


In Loader mode, the bootloader will enter the upgrade state, waiting for host commands for firmware upgrades, etc. To enter the Loader mode, the bootloader must detect that the RECOVERY button is pressed during startup and the USB is connected.


The method to make the device enter the upgrade mode is as follows:


One way is to disconnect the power adapter


Connect the device and the host with a double male USB data cable.


Press and hold the RECOVERY button on the device.


Plug in


After about two seconds, release the RECOVERY button.


Another way is to connect the power adapter


Connect the device and the host with a double male USB data cable.


Press and hold the RECOVERY button on the device.


Briefly press the RESET button.


After about two seconds, release the RECOVERY button.


MaskRom mode


MaskRom mode is used to repair the system when the bootloader is damaged.


Generally, it is not necessary to enter the MaskRom mode. Only when the bootloader verification fails (the IDR block cannot be read, or the bootloader is damaged), the BootRom code will enter the MaskRom mode. At this time, the BootRom code waits for the host to transmit the bootloader code through the USB interface, load and run it.

212


Pin definition description


Core board pin definition

Pin serial number


Signal

type

describe

1

GND

Reference place

Reference place

2

GPIO4_A4

GPIO

CIF,EBC,GMAC,UART,IIS Multiplexed pins

3

GPIO4_A5

GPIO

CIF,EBC,GMAC,UART,IIS Multiplexed pins

4

GPIO3_D6

GPIO

CIF,EBC,GMAC,UART,PDM Multiplexed pins

5

GPIO3_D7

GPIO

CIF,EBC,GMAC,UART,PDM Multiplexed pins

6

GPIO4_A6

GPIO

ISP,EBC,GMAC,SPI,IIS Multiplexed pins

7

GPIO4_A0

GPIO

CIF,EBC,GMAC,PDM Multiplexed pins

8

ETH1_REFCLKO_25M_M0

PHY Reference clock

PHY Reference clock

9

GPIO0_B7

GPIO

PWM,CPUAVS Multiplexed pins

10

HDMITX_SDA

HDMI

Output connection

mouth


IIC Multiplexed pins

11

HDMITX_CEC_M0

HDMI

Output connection

mouth


SPI Multiplexed pins

12

HDMITX_CEC_M0

HDMI

Output connection

mouth


IIC Multiplexed pins

13

HDMI_TX_HPDIN

HDMI

Output connection

mouth


HDMI Insertion detection

14

GPIO0_B6

GPIO

IIC,SPI,PCIE,PWM Multiplexed pins

15

I2C1_SDA

I2C1  Signal

IIC Multiplexed pins

16

GPIO0_B5

GPIO

IIC,SPI,PCIE,PWM Multiplexed pins

17

I2C1_SCL

I2C1  Signal

IIC Multiplexed pins

18

USB2_HOST2_DM

USB interface

USB interface

19

USB2_HOST2_DP

USB interface

USB interface

20

USB2_HOST3_DM

USB interface

USB interface

21

USB2_HOST3_DP

USB interface

USB interface

22

PCIE30X2_PERSTn_M1

PCIE interface

LCD,SPI,IIS Multiplexed pins

23

PCIE30X2_CLKREQn_M1

PCIE interface

LCD,SPI,IIS Multiplexed pins

24

PCIE30X2_WAKEn_M1

PCIE interface

LCD,SPI,IIS Multiplexed pins

25

GPIO2_D7

GPIO

LCD,SPI,UART,IIS Multiplexed pins

26

GPIO3_A7

GPIO

LCD,GMAC,SDMMC Multiplexed pins

27

UART2_TX_M0_DEBUG

Serial port 2

GPIO，Serial port multiplexing pin

28

UART2_RX_M0_DEBUG

Serial port 2

GPIO，Serial port multiplexing pin

29

PWM7_IR

PWM 

PWM Signal

30

GPIO0_C0

GPIO

PWM,UART,GPUAVS Multiplexed pins

31

MIPI_CSI_RX_D3P

CSI interface

CSI Differential pair

32

MIPI_CSI_RX_D3N

CSI interface

CSI Differential pair

33

MIPI_CSI_RX_D2P

CSI interface

CSI Differential pair

34

MIPI_CSI_RX_D2N

CSI interface

CSI Differential pair

35

MIPI_CSI_RX_CLK1P

CSI interface

CSI Differential pair

36

MIPI_CSI_RX_CLK1N

CSI interface

CSI Differential pair

37

MIPI_CSI_RX_CLK0P

CSI interface

CSI Differential pair

38

MIPI_CSI_RX_CLK0N

CSI interface

CSI Differential pair

39

MIPI_CSI_RX_D1P

CSI interface

CSI Differential pair

40

MIPI_CSI_RX_D1N

CSI interface

CSI Differential pair

41

MIPI_CSI_RX_D0P

CSI interface

CSI Differential pair

42

MIPI_CSI_RX_D0N

CSI interface

CSI Differential pair

43

MIPI_DSI_TX0_D3P/LVDS_TX0_D3P

DSI/LVDS interface

DSI/LVDS Differential pair

44

MIPI_DSI_TX0_D3N/LVDS_TX0_D3N

DSI/LVDS interface

DSI/LVDS Differential pair

45

MIPI_DSI_TX0_D2P/LVDS_TX0_D2P

DSI/LVDS interface

DSI/LVDS Differential pair

46

MIPI_DSI_TX0_D2N/LVDS_TX0_D2N

DSI/LVDS interface

DSI/LVDSDifferential pair

47

MIPI_DSI_TX0_CLKP/LVDS_TX0_CLKP

DSI/LVDS interface

DSI/LVDS Differential pair

48

MIPI_DSI_TX0_CLKN/LVDS_TX0_CLKN

DSI/LVDS interface

DSI/LVDS Differential pair

49

MIPI_DSI_TX0_D1P/LVDS_TX0_D1P

DSI/LVDS interface

DSI/LVDS Differential pair

50

MIPI_DSI_TX0_D1N/LVDS_TX0_D1N

DSI/LVDS interface

DSI/LVDS Differential pair

51

MIPI_DSI_TX0_D0P/LVDS_TX0_D0P

DSI/LVDS interface

DSI/LVDS Differential pair

52

MIPI_DSI_TX0_D0N/LVDS_TX0_D0N

DSI/LVDS interface

DSI/LVDS Differential pair

53

REFCLK_OUT_CAM

DSI/LVDS interface

Camera reference clock

54

HDMI_TXCLKN_PORT

DSI/LVDS interface

HDMI Differential pair

55

HDMI_TXCLKP_PORT

HDMI output interface

HDMI Differential pair



56

HDMI_TX0N_PORT

HDMI output interface

HDMI Differential pair

57

HDMI_TX0P_PORT

HDMI output interface

HDMI Differential pair

58

HDMI_TX1N_PORT

HHDMI output interface

HDMI Differential pair

59

HDMI_TX1P_PORT

HDMI output interface

HDMI Differential pair

60

HDMI_TX2N_PORT

HDMI output interface

HDMI Differential pair

61

HDMI_TX2P_PORT

HDMI output interface

HDMI Differential pair

62

PCIE30_REFCLKN_IN

PCIE  interface

PCIE Differential pair

63

PCIE30_REFCLKP_IN

PCIE  interface

PCIE Differential pair

64

PCIE30_RX1N

PCIE  interface

PCIE Differential pair

65

PCIE30_RX1P

PCIE  interface

PCIE Differential pair

66

PCIE30_RX0N

PCIE  interface

PCIE Differential pair

67

PCIE30_RX0P

PCIE  interface

PCIE Differential pair

68

PCIE30_TX1N

PCIE  interface

PCIE Differential pair

69

PCIE30_TX1P

PCIE  interface

PCIE Differential pair

70

PCIE30_TX0N

PCIE  interface

PCIE Differential pair

71

PCIE30_TX0P

PCIE  interface

PCIE Differential pair

72

PCIE20_REFCLKN

PCIE  interface

PCIE Differential pair

73

PCIE20_REFCLKP

PCIE  interface

PCIE Differential pair

74

SATA2_RXN

SATA interface

SATA Differential pair

75

SATA2_RXP

SATA interface

SATA Differential pair

76

SATA2_TXN

SATA interface

SATA Differential pair

77

SATA2_TXP

SATA interface

SATA Differential pair

78

RESETn

Core board reset signal

Low effective

79

RK809_32KOUT_WIFI

Core board 32.768KHZ output

Core board 32.768KHZ output

80

USB3_HOST1_SSTXP

USB interface

USB interface

81

USB3_HOST1_SSTXN

USB interface

USB interface

82

USB3_HOST1_SSRXP

USB interface

USB interface

83

USB3_HOST1_SSRXN

USB interface

USB interface

84

USB3_OTG0_SSTXP

USB interface

USB interface

85

USB3_OTG0_SSTXN

USB interface

USB interface

86

USB3_OTG0_SSRXP

USB interface

USB interface

87

USB3_OTG0_SSRXN

USB interface

USB interface

88

USB3_OTG0_DM

USB interface

USB interface

89

USB3_OTG0_DP

USB interface

USB interface

90

USB3_HOST1_DM

USB interface

USB interface

91

USB3_HOST1_DP

USB interface

USB interface

92

USB3_OTG0_VBUSDET

USB interface

USB interface

93

USB3_OTG0_ID

USB interface

USB interface

94

DSI_TX1_D3N/EDP_TX_D3N

DSI/EDP interface

DSI/EDP Differential pair

95

DSI_TX1_D3P/EDP_TX_D3P

DSI/EDP interface

DSI/EDP Differential pair

96

DSI_TX1_D2N/EDP_TX_D2N

DSI/EDP interface

DSI/EDP Differential pair

97

DSI_TX1_D2P/EDP_TX_D2P

DSI/EDP interface

DSI/EDP Differential pair

98

DSI_TX1_D1N/EDP_TX_D1N

DSI/EDP interface

DSI/EDP Differential pair

99

DSI_TX1_D1P/EDP_TX_D1P

DSI/EDP interface

DSI/EDP Differential pair

100

DSI_TX1_D0N/EDP_TX_D0N

DSI/EDP interface

DSI/EDP Differential pair

101

DSI_TX1_D0P/EDP_TX_D0P

DSI/EDP interface

DSI/EDP Differential pair

102

DSI_TX1_CLKN/EDP_TX_AUXN

DSI/EDP interface

DSI/EDP Differential pair

103

DSI_TX1_CLKP/EDP_TX_AUXP

DSI/EDP interface

DSI/EDP Differential pair

104

GND

Reference place

Reference place

105

GND

Reference place

Reference place

106

VCC3V3_SYS

3V3 input

Core module 3.3V power input, guaranteed 2A hold

Continuous current


107

VCC3V3_SYS

3V3 input

Core module 3.3V power input, guaranteed 2A hold

Continuous current


108

SDMMC0_DET_L

SD Card interface

SATA,PCIE Multiplexed pins

109

SDMMC0_D3

SD Card interface

UART Multiplexed pins

110

SDMMC0_D2

SD Card interface

UART Multiplexed pins

111

SDMMC0_D1

SD Card interface

UART,PWM Multiplexed pins

112

SDMMC0_D0

SD Card interface

UART,PWM Multiplexed pins

113

SDMMC0_CMD/CAN0_TX_M1

SD Card interface

UART,PWM Multiplexed pins

114

SDMMC0_CLK/CAN0_RX_M1

SD Card interface

UART,PWM Multiplexed pins

115

EXT_EN

Enable signal

PMU Enable output signal

116

GPIO0_A7

GPIO

GPIO signal

117

GPIO0_D4

GPIO

GPIO signal

118

GPIO0_C3

GPIO

GPIO signal

119

SARADC_VIN0_KEY/RECOVERY

ADC Signal Detection

Used to upgrade the software button

120

SARADC_VIN1

ADC Signal Detection


121

RK809_PWRON

Core board sleep and wake button

Core board sleep and wake button

122

HPR_OUT

Core board analog audio output

Connect headphones

123

HPL_OUT

Core board analog audio output

Connect headphones

124

SPKP_OUT

Core board analog audio output

Connect the speaker

125

SPKN_OUT

Core board analog audio output

Connect the speaker

126

MIC1_INP

Core board analog audio input

Connect to MIC

127

MIC1_INN

Core board analog audio input

Connect to MIC

128

VCC_RTC

RTC power input

RTC power input, 2.5 to 3.3V, static work

Working current 0.6uA


129

GMAC0_RXCLK

Ethernet interface


130

GMAC0_RXD0

Ethernet interface


131

GMAC0_RXD1

Ethernet interface


132

GMAC0_RXD2

Ethernet interface


133

GMAC0_RXD3

Ethernet interface


134

GMAC0_RXDV_CRS

Ethernet interface


135

GMAC0_TXEN

Ethernet interface


136

GMAC0_TXD0

Ethernet interface


137

GMAC0_TXD1

Ethernet interface


138

GMAC0_TXD2

Ethernet interface


139

GMAC0_TXD3

Ethernet interface


140

GMAC0_TXCLK

Ethernet interface


141

UART8_RX_M0

Serial port 8


142

UART8_TX_M0

Serial port 8


143

UART8_RTSn_M0

Serial port 8


144

UART8_CTSn_M0

Serial port 8


145

GMAC0_MDC

Ethernet interface


146

GMAC0_MCLKINOUT

Ethernet interface


147

GMAC0_MDIO

Ethernet interface


148

ETH0_REFCLKO_25M

Ethernet interface


149

I2C3_SCL_M0

I2C3 interface


150

I2C3_SDA_M0

I2C3 interface


151

GMAC1_INT/PMEB_GPIO2_D0

Ethernet interface


152

GMAC1_RSTn_GPIO2_D1

Ethernet interface


153

GMAC0_INT/PMEB_GPIO2_D2

Ethernet interface


154

GMAC0_RSTn_GPIO2_D3

Ethernet interface


155

GPIO1_A4

GPIO

GPIO Signal

156

GPIO0_A5

GPIO

GPIO Signal

157

GPIO0_A6

GPIO

GPIO Signal

158

GPIO0_C1

GPIO

GPIO Signal

159

GPIO4_C6

GPIO

GPIO Signal

160

GPIO4_C5

GPIO

GPIO Signal

161

GPIO4_C4

GPIO

GPIO Signal

162

GPIO4_C3

GPIO

GPIO Signal

163

GPIO4_C2

GPIO

GPIO Signal

164

UART3_TX_M1

Serial 3 interface


165

UART3_RX_M1

Serial 3 interface


166

GPIO3_D5

GPIO

GPIO Signal

167

GPIO3_D4

GPIO

GPIO Signal

168

GPIO3_D3

GPIO

GPIO Signal

169

GPIO3_D2

GPIO

GPIO Signal

170

GPIO3_D1

GPIO

GPIO Signal

171

GPIO3_D0

GPIO

GPIO Signal

172

SPDIF_TX_M1

Coaxial output interface

Connect to digital amplifier input

173

GPIO3_C7

GPIO

GPIO Signal

174

GPIO3_C6

GPIO

GPIO Signal

175

GPIO3_C4

GPIO

GPIO Signal

176

GPIO3_C3

GPIO

GPIO Signal

177

HP_DET_L_GPIO3_C2

Headphone insertion detection

Headphone insertion detection

178

GSENSOR_INT_L_GPIO3_C1

GPIO

GPIO Signal

179

BT_WAKE_HOST_H_GPIO3_A1

GPIO

GPIO Signal

180

HOST_WAKE_BT_H_GPIO3_A2

GPIO

GPIO Signal

181

BT_REG_ON_H_GPIO3_A0

GPIO

GPIO Signal

182

GPIO3_B6

GPIO

GPIO Signal

183

GPIO3_B5

GPIO

GPIO Signal

184

UART4_TX_M1

Serial 4 interface


185

UART4_RX_M1

Serial 4 interface


186

I2S3_SDI_M0

SPI interface


187

I2S3_LRCK_M0

SPI interface


188

I2S3_SCLK_M0

SPI interface


189

I2S3_SDO_M0

SPI interface


190

GPIO4_C0

GPIO

GPIO Signal

191

GPIO4_C1

GPIO

GPIO Signal

192

GPIO4_B7

GPIO

GPIO Signal

193

GPIO4_B6

GPIO

GPIO Signal

194

GPIO4_B5

GPIO

GPIO Signal

195

GPIO4_B4

GPIO

GPIO Signal

196

GPIO4_B3

GPIO

GPIO Signal

197

GPIO0_C5

GPIO

GPIO Signal

198

GPIO0_C4

GPIO

GPIO Signal

199

GPIO0_C2

GPIO

GPIO Signal

200

GPIO0_C7

GPIO

GPIO Signal

201

GPIO4_A3

GPIO

GPIO Signal

202

GPIO4_A2

GPIO

GPIO Signal

203

GPIO4_A1

GPIO

GPIO  Signal

204

GPIO4_B0

GPIO

GPIO Signal

205

GPIO4_A7

GPIO

GPIO Signal

206

GPIO4_B1

GPIO

GPIO Signal

207

GPIO4_B2

GPIO

IIC,EBC,GMAC,SPI,IISMultiplexed pins

208

GND

Reference place

Reference place


214