Ficus2 Hardware User Manual

This Hardware Guide provides information about the features, connectors and signals available on the Ficus2 board.

Figure 1.1

1.1 Board Version

Ficus2 board comes with different version. When you get the board, you need to know the hardware version, which is printed in the bottom side of the board.

1.2 Power Supply

The Ficus2 board is powered by a DC 12V supply. There are two solutions for power supply. One with the ATX 12V 4Pin connector. And the other with DC 12V/4V Jack with On/Off switch. But they can not be used at the same time.

As for the current(mA) that the Ficus2 requires, it depends on what is connected to the Ficus2 board.

1.3 Buttons

Power SW is used when the board is power by the DC 12/4V Jack.

USB OTG Switch.

Maskrom Button helps to set the Soc to maskrom mode. Then you could flash system image to eMMC module via USB port.

1.4 LEDs

There are five LEDs on the top-left of the board.

1.5 USB

Ficus2 is equipped with one Micro USB port, one Double Type-A USB 2.0 host port, one Type-A USB3.0 port and so on.

As we know, standard USB categories include high-capacity access, network, Hub, serial converter, audio, video, HID etc. To meed the need mentioned above, here add one USB Hub chip. Therefore the Soc can communicate with so many USB devices.

1.5.1 Micro USB

Ficus2 is equipped with Micro a USB port used for USB serial console, which can access the low level debug message. You can use a Type-A to Micro USB cable with one end connected to the PC and the other end connected to the Micro USB port on board.

On PC, like Windows, Linux or Mac, you can use some software that is already built for serial console. For example, Putty, Minicom and so on.

1.5.2 Double Type-A USB 2.0 host port

As mentioned above, there is one USB Hub chip includeing a USB 2.0 high speed 4-port Hub controller on board. Two lanes that chip provides are for this Double Type-A USB 2.0 host port.

This port enables the attachment of peripherals such U Disk, keyboards, mice, USB dongle etc.

1.5.3 Type-A USB 3.0 port

There is one USB OTG switch near the USB 3.0 port.

When the USB OTG switch is switched to the host side, the Type-A USB 3.0 port also enables the attachment of peripherals such U Disk, keyboards, mice, USB dongle etc.

Compared with USB 2.0 host port, this USB 3.0 port supports On-The-Go(OTG) when the USB OTG switch is switched to the device side. Thus the Soc is recognized as an device.

Take adb as an example. You can use a Type-A to Type-A cable as a bridge between you PC and Ficus2 board. In addition to the Ficus2 system configuration, you can setup the adb tool on your PC to access Ficus2 over adb.

1.5.4 The other USB lanes

The USB Hub chip provides four USB lanes. Besides two lanes used for Double Type-A USB 2.0 port, another USB lane meets the need of the communication between Soc and 4G module.

The other lane is layout to the low speed connector.

1.6 Ethernet and PoE(Power Over Ethernet)

The Ficus2 is equipped with two Ethernet sockets. One is GbE with PoE support and the other is 10/100Mbit Ethernet.

Remember that there are Gigabit Ethernet cable and 100Mbit Ethernet cable.

1.7 WiFi and Bluetooth

The wireless module AP6256 is on board. It supports 802.11 ac wifi with 2.4G&5G Hz RF and Bluetooth 5.0. For better performance, on board anterna is equipped. Besides, an uFL antenna socket is reserved.

1.8 Mini PCIe 4G Module with SIM card

From our test, 4G module like Quectel EC20 and SIM card are available on Ficus2 board.

This module communicates with Soc like RK3399Pro over USB.

1.9 Audio

On Ficus2 board, audio can be played through speakers or headphones using a standard 3.5mm jack.

The definition of Speaker connector marked with number 7 in figure 5.1 is shown below.

Pin#	Name
1	HPL_VOP
2	HPL_VON
3	HPR_VOP
4	HPR_VON

1.10 HDMI

Any HDMI monitor should work as a display for the Ficus2 board ad the HDMI interface is following the standard.

HDMI CEC is supported.

The HDMI interface pin specification shows below.

Pin#	Name
1	HDMI_TX2P
2	GND
3	HDMI_TX2N
4	HDMI_TX1P
5	GND
6	HDMI_TX1N
7	HDMI_TX0P
8	GND
9	HDMI_TX0N
10	HDMI_TXCP
11	GND
12	HDMI_TXCN
13	PORT_CEC
14	NC
15	DDC_SCL
16	DDC_SDA
17	GND
18	VCC5V0_HDMI
19	HDMI_HPD

1.11 IR receiver

IRM-3638 module is equipped. its carrier frequency is 38 KHz. And the date rate is high, up to 4000 bit/sec.

1.12 RTC

The RTC battery connector is designed using the standard connector type.

Pin#	Name
1	GND
2	+3.3V

1.13 S/PDIF Socket

S/PDIF socket is equipped for digital audio output.

1.14 SPI Nor Flash

One SPI Nor Flash is on board. Its power supply voltage is 1.8V.

1.15 LVDS Connector

There are eight lanes LVDS included in LVDS connector.

The definition table of the LVDS connector is this.

Pin#	Name	Pin#	Name
1	VDD	2	VDD
3	VDD	4	GND
5	GND	6	GND
7	LVDS_D0N	8	LVDS_D0P
9	LVDS_D1N	10	LVDS_D1P
11	LVDS_D2N	12	LVDS_D2P
13	GND	14	GND
15	LVDS_CLK0N	16	LVDS_CLK0P
17	LVDS_D3N	18	LVDS_D3P
19	LVDS_D5N	20	LVDS_D5P
21	LVDS_D6N	22	LVDS_D6P
23	LVDS_D7N	24	LVDS_D7P
25	GND	26	GND
27	LVDS_CLK1N	28	LVDS_CLK1P
29	LVDS_D8N	30	LVDS_D8P

1.16 eDP Connector

eDP is the display interface. The definition table of the eDP connector is shown below.

As you can see, four lanes are layout.

Pin#	Name	Pin#	Name
1	EDP_TX0P	2	EDP_TX0N
3	GND	4	GND
5	EDP_TX1P	6	EDP_TX1N
7	GND	8	GND
9	EDP_TX2P	10	EDP_TX2N
11	GND	12	GND
13	EDP_TX3P	14	EDP_TX3N
15	GND	16	GND
17	EDP_AUXP	18	EDP_AUXN
19	VDD	20	GND

1.17 PCIE X4 Socket

PCIE X4 Socket is designed with the standard of NGFF.

It is suitable for something like NVME M.2 NGFF PCIe x4 SSD Card etc.

1.18 96boards standard 40P Low Speed Connector

The following table shows the signals on the2 x20 female 2mm connector.

Empty cells are not connected(NC) pins.

Pin#	Name	Pin#	Name
1	GND	2	GND
3	CTSA_1V8	4	PWRON
5	TXA_1V8	6	RESET_L
7	RXA_1V8	8	SPI1_CLK
9	RTSA_1V8	10	SPI1_RXD
11	TXB_1V8	12	SPI1_CS0
13	RXB_1V8	14	SPI1_TXD
15	I2C1_SCL	16	I2S0_LRCK_RX
17	I2C1_SDA	18	I2S0_SCLK
19	I2C6_SCL	20	I2S0_SDO0
21	I2C6_SDA	22	I2S0_DSI0
23	PWM3	24	I2S_CLK
25	GPIO3_D4/I2S0_SDI1	26	I2C8_SCL
27	GPIO3_D5/I2S0_SDI2	28	I2C8_SDA
29	GPIO3_D6/I2S0_SDI3	30	I2C4_SCL
31	CAM_RST0	32	I2C4_SDA
33	CAM_RST1	34	CAM_PWR0
35	VCC_1V8	36	VCC12V_DCIN
37	VCC5V0_USB	38	VCC12V_DCIN
39	GND	40	GND

The low speed connector provides

UART x2
SPI x1
I2S x1
I2C x4
GPIO x12
PWM x1

1.19 96boards standard 60P High Speed Expansion Connector

The following table shows the signals on the 0.8mm 50 ohm high speed receptacle.