EASY EAI Nano-TB (RV1126B) AIoT Board Data Sheet

Overview

The EASY EAI Nano-TB is an AIoT mainboard based on the RV1126B processor. It integrates 1 MIPI DSI display interface, 2 MIPI CSI camera inputs, 2 Gigabit Ethernet ports, WiFi 6, a TF card slot, 2 USB 3.0 Type-A ports, 1 USB 2.0 Type-A port, audio input and output, and standard peripherals including SPI, SAI, PWM, I2C, UART, and a hardware watchdog. The board offers a rich set of interfaces, 3 Tops NPU performance, a quad-core CPU, strong codec capability, and a complete Linux development package for secondary development.

Key Features

CPU: Quad core, 4x Cortex-A53 with NEON coprocessor
Integrated NPU: Up to 3 Tops
On-board storage: 1/2 GB DDR4, 64 GB eMMC
Video input: 2x 4-lane MIPI CSI
Video output: 1x MIPI DSI
Ethernet: 2x Gigabit Ethernet
WiFi / Bluetooth: WiFi 6 and Bluetooth 5.2
SLE: SLE1.0 standard communication protocol
Storage: 1x TF card slot
USB: 2x USB 3.0, 1x USB 2.0
Audio: 1x MIC input, 1x speaker output
Peripherals: SPI, SAI, PWM, UART, I2C, GPIO, RTC, hardware watchdog
Power: 12 V DC input

Typical Applications

Product Description

1.1 Product Overview

The EASY-EAI-Nano-TB core board is designed for AIoT applications using the Rockchip RV1126B processor. It integrates 4 Cortex-A53 cores and an independent NEON coprocessor, supports 4K@30fps H.264/H.265 decoding and encoding, and includes a generation of hardware ISP up to 12 MP. The ISP provides acceleration for features such as HDR, 3A, LSC, 3DNR, 2DNR, sharpening, dehaze, fisheye correction, gamma correction, and feature point detection. An 8 MP AI-ISP is included as a complement to the traditional ISP, improving spatial noise reduction and image enhancement. The embedded NPU delivers up to 3 Tops and supports mixed precision INT4/INT8/INT16/FP16. A complete Linux development package is provided for secondary development.

1.2 Product Images

Product front view

Product rear view

1.3 Specifications

Name	EASY EAI Nano-TB
Processor	RV1126B
Cores	4× ARM Cortex-A53 @ 1.6 GHz
NPU	Supports INT4/INT8/INT16/FP16 mixed precision, up to 3 Tops
VPU	4K@30fps H.264/H.265 Decoder and 4K@30fps H.264/H.265 Encoder
ISP	12 MP ISP + 8 MP AI-ISP
OS	Debian 12 / Ubuntu 22.04
Memory	1/2 GB LPDDR4X
Storage	64 GB eMMC
MIPI DSI	1x 4-lane MIPI DSI, 1.5 Gbps/lane
MIPI CSI	2x, each supports 4 lanes, 2.5 Gbps/lane
TF Card	1x TF card slot
USB 3.0 Host	2x USB 3.0 Type-A
USB 2.0 Host	1x USB 2.0 Type-A
Type-C	1x firmware download interface
Ethernet	2x Gigabit Ethernet
WiFi	WiFi 6

Bluetooth	Bluetooth 5.2
SLE	SLE1.0 communication
Microphone	1x microphone input
Speaker	1x 3 W / 4 Ω speaker output
UART	2x, 3.3 V
CAN	1x, 3.3 V
I2C	1x
PWM	2x
SPI	2x
SAI	1x
GPIO	3x
Debug UART	1x
LED	1x power indicator
Buttons	1x reset, 1x LOAD, 1x PWRON
Watchdog	External hardware watchdog supported
Power input	12 V DC
Mechanical size	120 mm × 90 mm
Operating temperature	-20°C to +85°C

2. Resources

2.1 RV1126B Processor

The RV1126B integrates 4 Cortex-A53 cores and an independent NEON coprocessor, supports 4K@30fps H.264/H.265 decoding and encoding, and includes a 3D GPU with compatibility for OpenGL ES 1.1/2.0/3.2, OpenCL 2.2, and Vulkan 1.2. The embedded NPU supports INT4/INT8/INT16/FP16 mixed precision up to 3 Tops. Models from frameworks such as TensorFlow, MXNet, PyTorch, and Caffe can be converted for deployment.

2.2 Display Interface

The board integrates 1x 4-lane MIPI DSI output.

2.2.1 MIPI DSI

The board includes 1 MIPI DSI supporting D-PHY v2.0, up to 1.5 Gbps/lane. Maximum supported resolution is 1920×1080@60 Hz, supporting RGB up to 24 bits. The physical connector is a 40-pin, 0.5 mm pitch horizontal FPC socket. The MIPI DSI connector is labeled J5.

2.3 Image Input Interfaces

The board provides 2 MIPI CSI interfaces for dual HD video input. The processor supports 4K@30fps H.264 and H.265 encoding.

2.3.1 MIPI CSI

Two MIPI CSI interfaces are integrated, supporting D-PHY v1.2. Each interface is 4 lanes and supports up to 2.5 Gbps/lane. The physical connector is a 40-pin, 0.5 mm pitch horizontal FPC socket. Signal definitions for both interfaces are the same. The two MIPI CSI connectors are silk-screened as "MIPI CSI0" (J3) and "MIPI CSI1" (J4).

2.4 TF Card Slot

The board includes 1 TF card slot for data storage, labeled J8. It supports SDIO 3.0 and dynamic signal voltage selection for 1.8 V and 3.3 V. The TF card can be used as a system boot device and supports TF card boot.

2.5 USB

The board provides 2 USB 3.0 ports, 1 USB 2.0 port, and 1 Type-C port used for firmware download.

2.5.1 USB 3.0

There are 2 USB 3.0 Type-A ports provided via a USB 3.0 hub IC. These are full-function USB 3.0 ports that include USB 2.0 signals. The physical connectors are Type-A, labeled J12 and J13.

2.5.2 USB 2.0

One USB 2.0 Type-A port is available and supports HS/FS/LS modes. It shares USB signals with the Type-C connector, so only one of the two can be used at a time. The Type-A connector is labeled USB3.

2.5.3 Type-C

One USB 2.0 Type-C connector is provided for system firmware download. It is labeled USB1.

2.6 Ethernet

The board integrates 2 Gigabit Ethernet ports with auto-negotiation for 10/100/1000 Mbps. RJ45 connectors are used. LAN0 is labeled J7 and LAN1 is labeled J6.

2.7 WiFi, Bluetooth, and SLE

The board integrates a DB37 tri-mode wireless module supporting IEEE 802.11 b/g/n/ax @ 2.4 GHz, BLE 5.2, and the SLE1.0 protocol. It supports SDIO 2.0 and 802.11n 20/40 MHz and 802.11ax 20 MHz bandwidths, offering up to 150 Mbps physical layer rate and extended coverage. The module has an antenna connector using an IPX socket, labeled U21. WiFi and Bluetooth characteristics are shown below.

Name	Feature	Description
2.4 GHz WiFi	WiFi standard	IEEE 802.11 b/g/n & Wi-Fi compliant
Frequency range	2.400 GHz to 2.4835 GHz (2.4 GHz ISM band)
Channels	2.4 GHz: Ch1 to Ch13
Modulation	802.11b: DQPSK, DBPSK, CCK; 802.11g/n: OFDM (64-QAM, 16-QAM, QPSK, BPSK); 802.11ax: OFDM (256-QAM, 64-QAM, 16-QAM, QPSK, BPSK)
Bluetooth	Bluetooth standard	BLE 5.2
Frequency range	2400 MHz to 2483.5 MHz (2.4 GHz ISM band)
Channels	LE: Ch0 to Ch39
Modulation	GFSK
SLE	SLE standard	SLE1.0
Operating frequency	2400 MHz to 2483.5 MHz (2.4 GHz ISM band)
Modulation	GFSK, BPSK, QPSK

2.8 Audio

The board supports one microphone input and one speaker output.

2.9 Mini PCIe Expansion

One mini PCIe expansion connector is provided, labeled J10. It exposes USB 2.0 signals only and does not support PCIe lanes. It can be used for USB-based 4G modules or other USB expansion modules.

2.10 Single-row Header

The board includes a single-row header providing ADC and UART signals. The connector pitch is 2.54 mm and is labeled P2. Pin descriptions are listed below.

Pin	Signal	Description
1	ADC0_IN2	ADC0 channel 2
2	UART2_RX_M0	UART2 RX (3.3 V)
3	UART2_TX_M0	UART2 TX (3.3 V)
4	GND	Ground

2.11 Expansion Header

An expansion header is provided with ADC, I2C, UART, and other signals. The connector pitch is 2.54 mm and is labeled P1. Pin descriptions are listed below.

Pin	Signal	Description
1	VCC_3V3	3.3 V output
2	VCC_5V	5 V output
3	I2C5_SDA_M0	I2C5 SDA (3.3 V)
4	VCC_5V	5 V output
5	I2C5_SCL_M0	I2C5 SCL (3.3 V)
6	GND	Ground
7	UART6_TX_M0	UART6 TX (3.3 V)
8	UART7_TX_M0	UART7 TX (3.3 V)
9	GND	Ground
10	UART7_RX_M0	UART7 RX (3.3 V)
11	UART6_RX_M0	UART6 RX (3.3 V)
12	SAI1_SCLK_M2	SAI1 serial clock (3.3 V)
13	GPIO5_C0_D	GPIO5_C0_D (3.3 V)
14	GND	Ground
15	GPIO5_C1_D	GPIO5_C1_D (3.3 V)
16	CAN0_RXD_M1	CAN RX (3.3 V)
17	VCC_3V3	3.3 V output
18	CAN0_TXD_M1	CAN TX (3.3 V)
19	SPI0_MOSI_M2	SPI0 MOSI (3.3 V)
20	GND	Ground
21	SPI0_MISO_M2	SPI0 MISO (3.3 V)
22	SPI1_CSN1_M1	SPI1 CS1 (3.3 V)
23	SPI0_CLK_M2	SPI0 CLK (3.3 V)
24	SPI0_CSN0_M2	SPI0 CS0 (3.3 V)
25	GND	Ground
26	SPI0_CSN1_M0	SPI0 CS1 (3.3 V)
27	SPI1_MOSI_M1	SPI1 MOSI (3.3 V)
28	SPI1_CSN0_M1	SPI1 CS0 (3.3 V)
29	SPI1_MISO_M1	SPI1 MISO (3.3 V)
30	GND	Ground
31	SPI1_CLK_M1	SPI1 CLK (3.3 V)
32	PWM1_CH0_M1	PWM1 channel 0 output (3.3 V)
33	PWM1_CH1_M1	PWM1 channel 1 output (3.3 V)
34	GND	Ground
35	SAI1_LRCK_M2	SAI1 frame clock (3.3 V)
36	SAI1_MCLK_M2	SAI1 master clock (3.3 V)
37	GPIO5_C2_D	GPIO5_C2_D (3.3 V)
38	SAI1_SDI_M2	SAI1 data input
39	GND	Ground
40	SAI1_SDO_M2	SAI1 data output

2.12 LEDs

Two surface-mount LEDs are provided. D79 is the power indicator, and D36 indicates 4G module communication status.

2.13 Buttons

Three tactile buttons are integrated. Descriptions are:

Location	Name	Description
S1	RESET	Reset button
S2	LOAD	Loader mode button. Hold this button and press RESET to enter loader download mode.
S4	PWRON	Power on/off button

2.14 Hardware Watchdog

An external hardware watchdog is integrated. The watchdog timeout interval is 1.6 s. If not fed within 1.6 s, the watchdog will generate a reset signal. The default system feeds the watchdog every 0.8 s. The watchdog can be enabled or disabled via the S3 DIP switch: set the "WDT" position to "ON" or "1" for normal operation.

2.15 DC Jack

The power input is a 5.5 mm standard DC jack labeled J11. The required supply is 12 V DC. A 12 V, 3 A adapter is recommended.

3. Electrical Parameters

3.1 Power Parameters

Condition	Voltage	Current	Power	Unit
System normal boot	12 V	0.195 A	2.34 W	V / A / W
Freeze sleep mode	12 V	0.069 A	0.828 W	V / A / W
Mem sleep mode	12 V	0.083 A	0.996 W	V / A / W
CPU 50% load (2 cores)	12 V	0.225 A	2.70 W	V / A / W
CPU 100% load (4 cores)	12 V	0.255 A	3.06 W	V / A / W
CPU 50% + NPU full load	12 V	0.393 A	4.71 W	V / A / W

4. Mechanical Dimensions

Parameter	Value	Notes
Board length	120 mm
Board width	90 mm
Mounting hole size	3 mm	Use M3 screws for mounting

Mechanical dimensions

5. Disclaimer

The information in this manual is provided to the best of the manufacturer's knowledge. Content may change over time. The manufacturer reserves the right to update the manual without prior notice. Users should refer to the latest official documentation for up-to-date information.