TB-RK1808M0 AI Compute Card Specification

Toybrick TB-RK1808M0 Mini-PCIe Compute Card (hereinafter referred to as compute card) configured with Rockchip RK1808 neural network processor, 1G DDR4 memory and 8G EMMC. With a standard Mini-PCIe interface, compute card support USB3.0 and mini-PCIe transfer mode by DIP switch, if equipped with RK accessory, the following two modes can be realized:

Add-in card installed in a mobile platform.
Logical Representation of the PCI Express Mini Card.

Compute card also support some custom IO, include GPIO, Uart, USB3.0 OTG, USB2.0 Host, Reset and recovery. With these custom IO, compute card can not only be used as mainboard to control the peripheral hardware, but also be integrated into the artificial intelligence motherboard as a compute module to receive the control signals which come from the host. This greatly expand the IO capacity of the Mini-PCIe compute card and improve the IO performance.

As an artificial intelligence compute card, Mini-PCIe compute card has the characteristics of high performance, low power consumption and standard interface. It can be widely used in various fields of artificial intelligence. With the powerful artificial intelligence computing ability, Mini-PCIe compute card can build the artificial intelligence algorithm on the edge of the network and be easy to upgrade the traditional embedded devices and extend these devices artificial intelligence capability.

Features

Industrial-grade design, excellent heat dissipation capability and high performance computing capabilities to meet the needs of various AI terminal products.
Complies with the Mini-PCIe interface standard, can be directly inserted into the Mini-PCIe slot of the existing motherboard to expand AI computing capabilities.
Pre-installed Debian10 operating system, integrated system software libraries such as RGA, MPP, and RKNN, providing rich application cases.

Specifications

Technical Specifications
CPU	Rockchip RK1808K
CPU Core	Dual Cortex-A35，up to 1.4GHz
NPU	3TOPs for INT8/300 GOPs for INT16/100GFLOPs for FP16 Support IN8/INT16/FP16 Support TensorFlow, Caffe, ONNX and Darknet models
VPU	1080p@60fps H.264 Decode 1080p@30fps H.264 Encode
Memory	1GB DDR
Storage	8GB EMMC
System	Debian10
Power	Input 3.3V/1A
Interface	Mini-PCIe
Temperature	-40℃~85℃
Dimensions
Size	30mm x 51mm
Color	Matte Black
PCB	8-layer board design, gold deposition process

Size

Interface Definition

Compute card follows the standard Mini-PCIe specification and can support two transfer modes by the DIP Switch (as shown in the figure).

PCIe x1 mode (Logical Representation of the PCI Express Mini Card): Select the mode if the host's Mini-PCIe slot is based on PCI Express protocol.

The pins assignment of PCIE x1 mode is shown in the figure below:

USB3.0 mode (add-in card installed in a mobile platform): Select the mode if the host's Mini-PCIe slot can connect 4G communication module.

The pins assignment of USB3.0 mode is shown in the figure below:

Electrical

pin num	pin net	Type	Voltage	Description
39	VCC3V3_PCIE	Power In	3.3V	3.3V Power Supply for MINI-PCIE card
41	VCC3V3_PCIE	Power In	3.3V	3.3V Power Supply for MINI-PCIE card
2	VCC3V3_PCIE	Power In	3.3V	3.3V Power Supply for MINI-PCIE card
24	VCC3V3_PCIE	Power In	3.3V	3.3V Power Supply for MINI-PCIE card
52	VCC3V3_PCIE	Power In	3.3V	3.3V Power Supply for MINI-PCIE card
1	PCIE_WAKE_L	Out	3.3V	PCIE wake
7	PCIE_CLKREQN	Out	3.3V	PCIE clock require, active Low
22	RESET_PCIE	In	3.3V	PCIE Reset
30	UART2_RX	In	3.3V	UART_RX for debug
32	UART2_TX	Out	3.3V	UART_TX for debug
42	GPIO0_B4	Out	3.3V	GPIO, default High
44	GPIO0_B3	Out	3.3V	GPIO, default Low
46	GPIO0_B2	Out	3.3V	GPIO, default Low
47	ADC2_KEY_IN	In	1.8V	ADC input, default High, active Low for loader mode
45	RESET_L	In	1.8V	RK1808 Reset, default High; active Low

Note：

pin47 is internal pull up, When the pin is connected to ground, the boot will enter the loader mode. It is recommended to reserve key or pin header for debug.
pin44、pin46 default low, pin42 default high, it is recommended that these three pins connect to the tricolor LEDs to check the status.
pin45 is internal pull up, RK1808 reset function, it is recommended to reserve key.
pin7 is open drain output, default low; Connect as needed, can be suspended.

Accessory

Mini-PCIe To USB3.0 Board:

Mini-PCEe To PCIE x1 Board:

CON1 and CON2 Pin Definition:

Pin#	CON1	CON2
1	GND	VCC3V3
2	GPIO0_B4	TXD
3	GPIO0_B2	RXD
4	VCC3V3	GND