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Documentation > PLT Lite Mass Production Programming Guide / Introduction/ PLT Lite Copy URL

PLT Lite

PLT Lite supports programming mass production firmware, resources, Bluetooth addresses, and firmware keys, and provides such functionalities as crystal oscillator calibration and RSSI testing. In addition, more than one PLT Lite can be connected in cascade, allowing batch programming for GR5xx SoCs.

The hardware layout of PLT Lite is shown in Figure 2 ; the definitions of functional interfaces are detailed in Table 1.

Figure 2 PLT Lite hardware layout (top view)
Table 1 Definitions on functional interfaces of PLT Lite
Symbol Interface Description
J1 Beeper connector Connects a beeper for error alarm.
J5 GU connector Connects the Golden Unit (GU) module (the calibrated Bluetooth LE module).
J8 USB Type-B connector Supplies PLT Lite and enables communication via UART.
J9 Serial port for DUT programming Connects the DUT (Goodix_DUT_GR5xxx, a PCB equipped with a GR5xx SoC).
J10 QSPI connector Connects an external Flash.
J11 Master cascade connector Connects the master when more than one PLT Lite is connected in cascade.
J12 Slave cascade connector Connects the slave when more than one PLT Lite is connected in cascade.
D2 & D3 Programming status indicators If programming succeeds, D2 (green LDE) keeps flashing; if programming fails, D3 (red LED) keeps flashing.
D4 Cascade status indicator If cascading succeeds, D4 (blue LED) flashes five times and then remains on.
D7 GU power indicator When GU remains in power-on status, D7 (green LED) remains on.
D8 DUT reset indicator When DUT is reset, D8 (green LED) flashes once and then turns off.
K1 Button
  • Press K1 to reset GU.
K2 Button
  • Press K2 to start programming for the current PLT Lite.
  • Press K2 twice to present the name of the to-be-programmed custom firmware on the LCD or to turn off the beeper.
  • Press and hold K2 to synchronize the advertising address of the GU of the master during cascading.
K5 Button
  • Press K5 to start programming for all PLT Lite boards connected in cascade.
  • Present K5 twice to present the start and end Bluetooth addresses, and programming times of Bluetooth addresses on the LCD.
  • Press and hold K5 to present the GU firmware version, the total number of tests (upper limit), and the number of tests already conducted on the LCD.
Tip:

For more information about PLT Lite, refer to PLT Lite User Manual.

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