Page Comparison

Items

Explanations

1

12V DC power input. The diameter of the DC Jack plug is 5.5mm. The power supply current of the adapter must be greater than 1A.

2

Main-power switch. Turn left to ON, and turn right to OFF. Note that you still need to press Wake-up key (for 1 second) to wake up the system after turning on main-power switch.

3

Wake-up key. The functions are as follows:

• (When power off) Short press for 1 second: Turn power on (hardware action)

• (When power on) Short press for 1 second: Enter to deep sleep mode (software function)

• (When in sleep mode) Short press for 0.3 second: Resume from deep sleep mode (software function)

• (When power on) Press for 7 seconds: Turn power off (software action)

• (When power on) Press for 10 seconds: Turn power off forcibly (hardware action)

4

Socket (DIP-8) of SPI-NOR flash chip. Before inserting the SPI-NOR flash chip, be sure to confirm the chip notch direction (or pin 1 position) and the chip power supply voltage (1.8V or 3.3V). There is a SOIC-8 soldering pad under the DIP-8 socket. The DIP-8 socket can be removed and used a SOIC-8 SPI-NOR chip instead

Note that to test frequencies of SPI-NOR flash above 60MHz, please use SOIC-8 packaged chips.

5

Socket of micro SD card.

6

RJ-45 socket of Ethernet. It supports 10M/100M/1000M speeds.

7

Giga PHY chip of Ethernet (Realtek RTL8211FD).

8

Pin-header (3-pin, 100-mil, 3.3V) of UADBG/UA2AXI (serial port). The pin definitions from left to right are TX, RX, and GND. It can be used as general UART (UADBG) or UART-to-AXI bridge UART (UA2AXI). The default baud rate is 115,200. No parity and 1 stop-bit. Please note that EVB does not use the UADBG/UA2AXI serial port by default. To use the UADBG/UA2AXI serial port, please solder 0Ω resistors at the R411 and R412 positions, and remove the 0Ω resistors at the R348 and R349 positions. In addition, be care of pin-mux settings in software, UADBG/UA2AXI cannot be used with the CA55 JTAG or GMAC interface at the same time. Make sure both CA55 JTAG and GMAC interfaces are off.

9

Socket (DIP-24, 600 mil) of daughter board of 8-bit NAND flash. Please refer to Appendix 3 for pin definitions. Before inserting the daughter board of 8-bit NAND flash, be sure to confirm the notch direction of the daughter board (or pin 1 position) and the chip power supply voltage (1.8V or 3.3V).

10

Socket (DIP-8) of daughter board of SPI-NAND flash. Before inserting the SPI-NAND flash chip, be sure to confirm the chip notch direction (or pin 1 position) and the chip power supply voltage (1.8V or 3.3V). There is a WSON-8 soldering pad of SPI-NAND flash under the socket, and the DIP-8 socket can be removed and replaced with a WSON-8 packaged SPI-NAND chip. Note that to test frequencies of SPI-NAND flash above 60MHz, please use WSON-8 packaged chips.

11

Socket (DIP-24, 600 mil) of daughter board of eMMC. Please refer to Appendix 2 for pin definitions. Before inserting the eMMC daughter board, be sure to confirm the direction of the daughter board notch (or pin 1 position). There is an FGBA-153 soldering pad of eMMC chip under the socket. The DIP-24 socket can be removed and replace with a FBGA-153 packaged eMMC chip. Note that to test speed above DDR52 or HS100, please use FBGA packaged chips.

12

Pin-header (10x2 pins, 100 mil) of JTAG interface of Cortex-A55. Please refer to Appendix 1 for pin definitions. Before inserting the JTAG cable, be sure to confirm the position of pin 1.

13

Type A socket of USB 2.0. It supports Full/High speeds, supports Host, Device and OTG 1.0. Current limit of VBUS is 1A.

14

Micro AB socket of USB 2.0. It supports Full/High speeds, supports Host, Device and OTG 1.0. Current limit of VBUS is 1A. Please note that USB 2.0 Type A and Micro AB sockets share the same USB 2.0 port, and only one of them can be used at a time.

15

Type C socket of USB 3.1 Gen1. It supports Low/Full/High/Super speeds, supports Host, Device and DRD. Current limit of VBUS is 1A.

16

WiFi/Bluetooth (AMPAK AP6256) module. Main chip of the module is Broadcom BCM43456 chip.

17

Pin-header (3-pin, 100-mil, 3.3V) of UART0 (serial port of main console). The pin definitions from left to right are GND, RX, and TX. It is default serial port of i-boot, x-boot, Trusted Firmware-A (TF-A), U-Boot and Linux kernel. The default baud rate is 115,200. No parity and 1 stop-bit.

18

Samtec differential socket (QSH-020-01-F-D-DP) of CPIO. CPIO is a high-speed (4.8 GB/s) interface for connecting to a peripheral chip. Chip-to-chip (external mode, on board) transfers support a maximum speed of 4.8 GB/s, and die-to-die (internal mode, in a package) transfers support a maximum speed of 9.6 GB/s. Refer to Section 11 for details.

19

FFC connector (15 pins, 1.0mm) of MIPI/CSI-RX4 interface. It is compatible with the Raspberry Pi camera FFC connector. Please refer to Appendix 5 for pin definitions.

20

FFC connector (24-pin, 0.5mm, top-contact) of MIPI/CSI-RX5. Please refer to Appendix 6 for pin definitions.

21

FFC connector (15-pin, 1.0mm) of MIPI/DSI-TX interface. It is compatible with the Raspberry Pi display FFC connector. Please refer to Appendix 7 for pin definitions.

22

FFC connector (30-pin, 0.5mm, top-contact) of MIPI/DSI-TX interface. The interface also supports MIPI/CSI-TX functionality. Please refer to Appendix 7 for pin definitions.

Please note that both MIPI/DSI-TX connectors (J21 and J22) share the same MIPI/DSI-TX interface and cannot be used at the same time.

23

C3V-W chip (15mm x 15mm, 526-pin, TF-BGA).

24

Pin-header (2x10, 100mill) of Audio. Please refer to Appendix 4 for pin definitions.

25

Pin-header (3-pin, 100-mil, 3.3V) of UART6 (serial port). The pin definitions from top to bottom are GND, RX, and TX. It is default serial port of Cortex M4. The default baud rate is 115,200. No parity and 1 stop-bit.

26

Reset key. Reset CM4 and main power-domains, but does not reset RTC.

27

Boot configuration switch (SW2) of C3V-W chip. Please refer to Section 3 "Boot Device and Configuration" for boot configuration switch setting.

28

Boot configuration switch (SW3) of C3V-W chip. Please refer to Section 3 "Boot Device and Configuration" for boot configuration switch setting.

29

Pin-header (2x10 pins, 100 mil) of JTAG interface of Cortex M4. Before inserting the JTAG cable, please be sure to confirm the position of pin 1. Please refer to Appendix 9 for pin definitions.

30

Micron LPDDR4 SDRAM (3200Mbps). The C3V-W chip supports three types of DDR SDRAM, including LPDDR4, DDR4 and DDR3, with a maximum size of 8 GiB.

31

Pin-headers of 1.8V ←→ 3.3V/3.0V bi-directional voltage-translators.

Jumpers

Descriptions

Remarks

J1, J2, J4, J6, J7, J9, J10, J12, J13, J14, J15

Pin-headers (4 pins, 100 mil) for measuring current or voltage.

J3

Pin-header (2 pins, 100 mil) for feeding external +12V DC power directly.

No use by default

J5

When plug a jumper in J5, the CM4 (AO) domain power supply is controlled by the CM4_PWR_EN signal.

Plug a jumper in

J8

When plug a jumper in J8, the VDD_VV (video codec) power is controlled by the VV_PWR_EN signal.

Plug a jumper in when need.

J11

When plug a jumper in J11, the VDD_NPU (NPU) power is controlled by the CM4_PWR_EN signal.

Plug a jumper in when need.

J16, J17, J18, J20

Pin-headers (2 pins, 100 mil) for control signals of Raspberry Pi camera.

J19, J21

Pin-headers (2 pins, 100 mil) for control signals of “MIPI/DSI-TX to HDMI” daughter board of FORLINX EMBEDDED.

J22

Plug a jumper in J22 to turn on power of SPI-NOR / SPI-NAND (X2) flash forcibly.

No connect by default

J23

Plug a jumper in J23 to turn on power of SPI-NAND (X1) flash forcibly.

No connect by default

J24 ~ J37, J40, J43, J46

Pin-headers (4 pins, 100 mil) for measuring signals conveniently.

J38, J41

Pin-headers (1 pin) of SYS_1V8 power for supplying external devices.

J39, J42

Pin-headers (1 pin) of SYS_3V power for supplying external devices.

J44, J47

Pin-headers (1 pin) of SYS_3V3 power for supplying external devices.

J45, J48

Pin-header (1 pin) of SYS_5V power for supplying external devices.

J49

Plug a jumper in J49 to turn on power of VBUS of USB 3.0 Type C socket forcibly.

No connect by default

J50

Plug a jumper in J50 to turn on power of VBUS of USB 2.0 Micro AB socket forcibly.

No connect by default

J51

Pin header (5 pins, 100 mil) of SAR ADC input. The pin definitions from top to bottom are GND, CH3, CH2, CH1, and CH0.

J52

Plug a jumper in J52 to turn on power of VBUS of USB 2.0 Type A socket forcibly.

No connect by default

J53

Plug a jumper in J53 to turn on power of SD card forcibly.

No connect by default

J54

Pin-header (8 pins, 100 mil) for measuring signals of SD card.

J55

Pin header (3 pins, 100 mil) for selecting working voltage (1.8V or 3.0V) of GPIO50 ~ GPIO59.

Refer to Section 5.

J60

Pin header (3 pins, 100 mil) for selecting working voltage (1.8V or 3.0V) of GPIO60 ~ GPIO69.

Refer to Section 5.

J64

Pin header (3 pins, 100 mil) for selecting working voltage (1.8V or 3.0V) of GPIO70 ~ GPIO79.

Refer to Section 5.

J56, J61

Pin headers (3 pins, 100 mil) for selecting working voltage (1.8V or 3.0V) of boot devices.

Refer to Section 3.

J73

Pin header (2 pins, 100 mil) for selecting working voltage (1.8V or 3.0V) of boot devices.

Refer to Section 3.

J57

Plug a jumper in J57 to activate PER_RESET signal.

Plug a jumper in

J58, J59, J62, J63,

J65 ~ J72

Pin headers (4 pins, 100 mil) of 1.8V / 3.3V bi-directional voltage translators.

Refer to Section 12.

J74

Pin-header (7 pins, 100 mil) for measuring signals of boot configuration switches (SW2 and SW3).

J75

Plug a jumper in J75 to supply power for burning OTP.

Plug a jumper in J75 when burning OTP.

J76

Pin header (2 pins, 100 mil) for using the signals.

J77

Pin header (3 pins, 100 mil) for selecting working voltage (1.8V or 3.0V) of VDDIO of AP6256. Please refer to Section 6.

Select SYS_1V8

J78

Plug a jumper in J78 to turn on power of AP6256 module forcibly.

No connect by default