Hardware Information

This section introduces the hardware specifications for the Radxa CM3 and the Radxa CM3 IO Board.

Hardware Version Modification Notes

• V1.0

  • Initial release version.

• V1.1

  • Modified PMUIC: Changed from RK809-5 to RK817-5.

• V1.2

  • Added auto power-on circuit.
  • Added power-on indicator light (this version includes eMMC and WiFi functionality).

• V1.21

  • Removed component R903461.
  • Added R21 (100K, 0201 package).
  • Changed R20 from 10K to 20K.

• V1.3

  • Modified PCB board, adjusted CSI signal positions.
  • PMIC_SLEEP_H routed from connector, optimized via routing.
  • Added resistor R903471 (22Ω, 0201 package).
  • Adjusted values of resistors R20, R21, and R9235.

• V1.31A

  • Added resistors R90351 and R90348.
  • Modified SARADC_IN3 connection to J1 (14PIN: 5V_PWR_EN).
  • Modified PCIE_PWREN_H connection to J1 (34PIN: USB2.0_HUB_PWR).
  • Connected 4G_DISABLE to U13A (37PIN: GPIO7).

• V1.32A

  • Updated PCB silkscreen LOGO, version number updated to V1.32A.
  • Changed SARADC port connection: from J1 (26PIN) to U13A (93PIN).
  • Added R90352 (10K, 0201 package).

• V1.321A

  • Updated R9213, R9214 reference resistors: changed from 0201 0Ω to 120Ω ferrite beads.
  • Updated BOM version to V1.321A.
  • Modified Y2 capacitor parameter: changed from 37.4MHz 12pF to 9pF.
  • Added resistor R92 (470Ω, 0201 package).
  • Changed R21 resistor value: from 22Ω to 100Ω.

• V1.322A

  • Added reference resistor R90347 (22Ω, 0201 package).

📄️ Hardware Interface Description

Detailed hardware information for CM3/CM3 IO