7. EVM Setup for J721S2

This section is intended to give a quick reference of EVM related to SDK usage. Full EVM documentation can be referenced at TDA4VL & TDA4AL system-on-module.

Important

• The power supply current requires more than 1A @12V input

• DisplayPort-to-DVI or DisplayPort-to-HDMI adapters don’t work with DisplayPort

• The SOM board has to be tightly inserted into the connector sockets.

• When connecting the fusion daughter card, the power cable connecting processor board and fusion board should look exactly like the picture in section J721S2 SOM. (P.S. The same cable from TDA2P EVM has the opposite wire connection at one end)

7.1. EVM Setup to run SDK demos

7.1.1. Daughter card requirements

Below table shows the daughter cards required for various features/demos

Feature	Infotainment card	Fusion 1 card	IMX390+UB953 FPDLink sensors	GESI card
HDMI display	REQUIRED	na	na	na
eDP (DisplayPort)display	na	na	na	na
CSI2RX camera input	na	REQURIED	REQURIED	na
CAN demos	na	na	na	REQUIRED

7.1.2. UART terminal setup

• Connect USB cable to Main UART port on common processor board (see Common Processor Board)

  • 4 UART ports would be visible at the PC side

  • Port 0 from this is used this for QNX, RTOS UART terminal from A72

• Setup UART for 115200 baud rate, 8 data bits, no party, 1 stop bit

7.1.3. Boot Modes

Bootmodes are selected using the SW8 and SW9 switches on the common processor board.

7.1.3.1. No Boot Mode

When you want the binaries to be loaded from a debugger (CCS), the common processor boards has to be set in the NO boot mode.

Following are the switch settings to do the same.:

SW8[1-8] = 1000 1000
SW9[1-8] = 0111 0000

Fig. 7.1 No Boot Mode

7.1.3.2. SD Boot Mode

Following are the switch settings to set the boot mode to SD for common processor board.:

SW8[1-8] = 1000 0010
SW9[1-8] = 0000 0000

Fig. 7.2 MMC/SD Boot Mode

7.1.3.3. XSPI Boot Mode

Following are the switch settings to set the boot mode to XSPI for common processor board.:

SW3[1-8] = 0xxx xxxx
SW8[1-8] = 0000 1010
SW9[1-8] = 0110 0000

Fig. 7.3 XSPI Boot Mode SW3

Fig. 7.4 XSPI Boot Mode SW8 and SW9

7.1.3.4. UART Boot Mode

Following are the switch settings to set the boot mode to UART for common processor board.:

SW3[1-8] = 0xxx xxxx
SW8[1-8] = 0000 0000
SW9[1-8] = 0111 0000

Fig. 7.5 UART Boot Mode SW3

Fig. 7.6 UART Boot Mode SW8 and SW9

7.2. EVM and Daughter Card information

7.2.1. J721S2 SOM

The J721S2 Evaluation Module consists of a SOM (System on Module), shown in the red box below, fitted to a common processor board or base EVM.

Fig. 7.7 J721S2 SOM

Contents of the board

• J721S2 SoC

• Power controller

• 4 GiB DDR RAM

• OSPI NOR flash

• Hyperflash

7.2.2. Common Processor Board

Common Processor Board is the main board which has peripherals to provide most common functionality. It has expander ports to connect to different adapter cards.

Fig. 7.8 J721S2 Common Processor Board

Contents of the board

1. 4xUART to USB port for Main uarts

   • Port0 from this is used this for Linux, RTOS UART terminal from A72

2. 2xUART to USB port MCU domain uarts

   • Port0 from this is used for Cortex M4F UART

   • Port1 from this is used for MCU R5F UART

3. 2x Display (eDP/DP) ports

   • Display0 is used by software for eDP/DP output

4. Ethernet (CPSW2G) port

5. SD card slot

6. XDS110 on board USB JTAG connector

7. USB ports

8. 12V Power input

9. Power switch

10. MIPI JTAG connector

7.2.3. Infotainment daughter card

Infotainment daughter card is adapter board which has additional peripherals for infotainment use cases. This has support for HDMI display, FPDlink display extra audio channels.

Fig. 7.9 Infotainment daughter card

Contents of the board

• HDMI display connector

• 2x FPDlink display connectors

• 14x 3.5mm audio jacks

• Parallel port Omnivision camera connector (direct connection, i.e no FPDLink)

• CSI camera connector (direct connection, i.e no FPDLink)

7.2.4. Quad Port Ethernet daughter card

Quad Port Ethernet (QPENet) board is an adapter board which offers additional Ethernet port capabilities to the Jacinto7 EVM.

Note

J721S2 does not make use of this card. It is used by other SoCs in the Jacinto Family.

Fig. 7.10 QPENet daughter card

7.2.5. GESI daughter card

GESI(Gateway/Ethernet Switch/Industrial) daughter card is an adapter board which has additional peripherals for gateway and industrial use cases. This has support for extra Ethernet ports and CAN ports.

Fig. 7.11 GESI daughter card

Contents of the board

• 5x Ethernet ports (J721S2 only uses port PRG0_RGMII1_B)

• Profinet connector

• Motor control headers

• Additional CAN Transceivers/ headers

7.2.6. Fusion daughter card

Fusion daughter card is adapter board to connect 4 camera sensors (IMX390+UB953 serializer) through de-serializer (UB960) available on the Fusion1 daughter card to CSI2RX ports of J721S2 SoC.

Connect the daughter card to common processor board at “CSI2 Exp” connector J25.

Fig. 7.12 CSI2 Exp Connector

Fig. 7.13 Fusion1 Board

Fig. 7.14 Fusion1 Camera Setup