RK3288 Board User manual 1 Document information This document is the RK3288_UIB_V1.4 hardware design manual. Table 1 Documentation Modification History The version number Modify the content V1.0.
No The title of the document Document version author illustrate Page:2
2 Hardware design block diagram 2.
2.2 Power diagram Figure 3 Power Architecture Diagram 3 Power Consumption Table 2 Power Consumption Table No Test conditions voltage current 1 Board standby power consumption 12V 0.
4 Hardware capabilities 4.1 Introduction to the basic functions of the hardware The RK3288 board mainly has the following functions: 1. 【TEST 1】LCD LCD function:J23,J4,J6 connector and LCD screen connection, for LCD The screen provides a 12V power supply and communicates with it, lights up the LCD screen, and implements touch function 2. 【TEST 2】Output audio function: output MIC audio signal, connect to the amplifier adapter board, drive the horn 3.
(2) After two DCDCs,a voltage of 1V is generated, which is supplied to the CPU and GPU respectively 2. VCC-USB（5V） (1) USB power supply, which is provided to the upper power supply of USB2,USB3 and J22(dual-layer USB). 3. +5V (1) MoS-controlled provides 5V to the lower layer of power supply to J22(dual-layer USB). (2) MoS-controlled provides 5V to lidar power Table 3 DCDC:12V to 5V Function Table Functional classes Feature description illustrate 1 Input properties The system input voltage is 4.
Figure 6 DCDC:12V to +5V Circuit Diagram 4.2.2 PMU:VCC_SYS(5V) generates a variety of power supplies through the PMU chip The ACT8846QM490-T is a power management chip (PMU) with inputs of VCC_SYS that generate multiple different voltages to supply to the board. There are four DCDCsand nine LDOs. OUT1~OUT4 is the DCDC output,OUT5~OUT13 is the LDO output, and the OUT1 output voltage is adjustable.
Table 7 PMU(LDO)Output Features Functional Table Output OUT5 OUT6 OUT7 OUT8 OUT9 OUT10 OUT11 OUT1 OUT13 2 1 Output 3.3V 1.0V 3.3V 3.3V 3.3V 1.0V 1.8V 1.8V 1.
The out1 output resistance is determined by the values R11 and R12,R11=4.99K,R12=20k,VFB1=1.2V. Available,Vout1=(R11/R12+1)*VFB1 = 1.5V Figure 9 Vout Calculation 4.2.3 DC:5V to VDD_CPU VCC_SYS(5V) to VDD_CPU with SYR837 BUCK DCDC. The SYR837 is I2C programmable to regulate the output voltage between 0.7125V and 1.5V. Table 8 DCDC:5V to VDD_CPU Functional Table Functional classes Feature description illustrate 1 Input properties The system input voltage is 2.6V-5.
Figure 10 DCDC:5V to VCC_CPU circuit diagram 4.2.4 DCDC:5V to VDD_GPU VCC_SYS(5V) to VDD_GPU with SYR838 BUCK DCDC. The SYR838 is I2C programmable to regulate the output voltage from 0.7125V to 1.5V. Table 9 DCDC:5V to VDD_GPU Functional Table Functional classes Feature description illustrate 1 Input properties The system input voltage is 2.6V-5.5V,normal operation YES 2 Output properties Demand ID: Load current ＜6A 3 Output properties Ripple + noise ＜5% 6 other Switching frequency 2.
Functional classes Feature description illustrate 1 Input properties Input voltage 2V-6V Yes 2 Output properties Load current 300mA 3 Output properties Ripple + noise ＜3% 4 other With enable Yes Figure 12 The LDO circuit 4.
3 correspondence Extend PCIE interface / Communicate with LTE modules 4 correspondence 1-4 USB2 HOST1_VBUS_DRV USB communication 5 correspondence J22 Lower HOST_VBUS_DRV Connect the Stereo Vision module 6 correspondence HOST2_ WIFI module USBWIFI_PWR USB Communication with WIFI modules 4.4.1 USB_HUB Circuits The FE1.1S chip extends the HOST1_USB signal to a quad USB signal. Each USB signal is placed in series with a common-mode inductor close to the USB metal interface.
4.5 Storage circuits 4.5.1 DDR Circuits The board is equipped with four DDR3 SDRAM chips K4B4G1646E-BCMA(256M*16bit), consisting of every two 16-bit chips 256M*32bit,two channels. Chip frequency 933MHz,package FBGA96. Figure 15 DDR3 circuit 4.5.2 Flash Circuits The board adopts NAND Flash memory chip KLMAG1JENB-B041,with a capacity of 16GB,a package FBGA169,and a clock frequency of 0~200MHz.
4.6 LCD circuit The board can drive LCD displays, including LVDS interface,EDP interface, backlight circuitry, and touch circuitry. 4.6.1 LVDS Circuits The board is equipped with an LVDS interface, with 5 differential signals, connected to the J23 interface output after connecting to the J23 interface output in series, and each set of signal wires is wrapped up and processed for equal length. Figure 17 LVDS interface circuit 4.6.
4.6.3 Touch Circuits The J4 is a touchscreen signal connector that communicates with the RK3288 via I2C. Figure 19 The touch connector circuit 4.6.4 EDP interface The board is equipped with an EDP interface that communicates with the RK3288 with three differential signals, each connected to the CN1 interface after connecting to the common-mode inductor in series.
4.7 Audio Circuits The board is equipped with an audio decoder chip, ES8323(24-bit DAC,8 to 96 kHz sampling frequency), which is used to output audio signals. The ES8323 communicates with the RK3288 via I2S and I2C, HPOL and HPOR is the left and right audio signals of the output. Figure 22 Audio Circuit 4.8 Ethernet The RTL8211E-VB-CG is a network transceiver PHY chip that uses an RGMII interface and uses four twisted pair channels for 1000Mbps transmission.
Figure 24 PHY chip circuit 4.9 232 Communication circuits The board has four 232 communication circuits connected to the J11,J13, and J14 connectors to communicate with external devices. The SP3232EEY is a TTL to RS232 level shifting chip with two receivers and two drivers.
5 Connector datasheet Figure 28 Physical Diagram J4:LCD touch interface Model HX20020-6A description HX20020-6A Interface Picture: The network name Level current Pin1 VCC_IO 3.3V 2.
J6:LCD backlit interface Model PH2.0-6A description PH2.0-6A Interface Picture: The network name Level Pin1 BL_12V 12V or 0V Pin2 BL_12V 12V or 0V Pin3 BL_EN Pin4 LCDC_BL Pin5 GND 0V Pin6 GND 0V illustrate J14:232 Interface 1 Model HX25037-2A description HX25037-3A (Red Star Connector).
Pin4 GND Pin5 PWM1 0V J12:Serial interface Model XH2.54-5P description XH2.54-5P Interface Picture: The network name Level Pin1 LIDA5V 5V or 0V Pin2 UART4_RX Pin3 UART4_TX Pin4 GND Pin5 PWM1 illustrate 0V J11:232 Interface 3 Model HX25037-8A Interface Picture: description HX25037-8A (Red Star Connector).
description Illuminated Gigabit RJ45 network interface socket The network name Level illustrate Pin1 Pin2 MDI0+ Pin3 MDI0- Pin4 MDI1+ Pin5 MDI2+ Pin6 MDI2- Pin7 MDI1- Pin8 MDI3+ Pin9 MDI3- Pin10 GND_EARTH Pin11 LED1_AD1 0V Pin12 Pin13 LED0_AD0 Pin14 VCC_LAN 3.3V Pin15 GND 0V Pin16 GND 0V USB2： Model USB-AF140PBT Interface Picture: description USBAF side plug three straight foot infinity inner bullet copper 14.
Model USB-AF140PBT Interface Picture: description USBAF side plug three straight foot infinity inner bullet copper 14.
Pin1 RECOVER 1.8V or 0V Pin2 GND 0V Pin3 GND 0V Pin4 GND 0V SW1： Model keystroke Interface Picture: description 6*6*6mm side plug button The network name Level Pin1 RESET 3.3V or 0V Pin2 GND 0V Pin3 GND 0V Pin4 GND 0V illustrate J8： Model PH2.0-4A description PH2.0-4A The network name Pin1 HPL Pin2 HP_MIC Pin3 GND Pin4 HPR Interface Picture: Level illustrate 0V 6 PCB production information 6.1 PCB Table 14 PCB Size Parameters Plate size 14.
Number of layers of the board 6 Plate thickness 1.6mm+/-10% Solder mask color Blue/Green Character color white Solder mask coverage Via cover oil Pad plating Lead-free OSP Flying probe test Test all Copper thickness 1 oz Table 15 PCB overlay information layer description typical TOP Signal Layer（L1） 1.6 FR-4 3.8 GND Layer 1.5 FR-4 8 pwr Layer（SIG3） 1.5 FR-4 30 Signal Layer（SIG4） 1.5 FR-4 8 GND Layer 1.5 FR-4 3.8 Singal Layer（L6） 1.
3. Logical classes vs. logical classes:8mil 6.2.3 Additional PCB information 1. The maximum current of the 12V trace is 5A and the minimum width is 100mil 2. TVS,ESD devices as close as possible to the connector 3. LVDS signals, EDP signals, Ethernet PHY signals are controlled with differential impedance control of 100 ohms and USB signal differential impedance control of 90 ohms 4.
This equipment complies with FCC/IC RSS-102 radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. ce matériel est conforme aux limites de dose d'exposition aux rayonnements, FCC / CNR-102 énoncée dans un autre environnement.cette eqipment devrait être installé et exploité avec distance minimale de 20 entre le radiateur et votre corps.
