Extended Cap IO/HW manual for NAUTIZ X8

Here’s how the Nautiz X8 looks with the extended cap.

nautiz x8 top

And here’s how it looks without the cap.

nautiz x8 top opened

Interface description

  • Connector 
    20 Pin Dual Row receptacle (2.0mm Pitch) Connector
  • Part Number 
    BF075-20-A-0830-N-A (GCT)
  • Pin Number 1  
    The image below shows the Top View Connector.

    pinout close up

  • Pin Description 

    extended cap table

  • Recommended Mate Connector 
    2.0 mm Pitch Male Header Connector 
    Part Number: BF030-20A-B0-0800-0277-0600-L-B (GCT)

Electrical characteristics

  • UART Signals
    Related Signals: UART_RXD, UART_TXD, UART_CTS, UART_RTS
    Signal levels are LVCMOS (3.3V) levels, not RS232-C levels. 

    extended cap table

  • Reset Signal
    Related signal: nReset
    This is an active-low open-drain output signal, which is pulled up to 3.3V by 100K ohm resistor. It can be controlled by software. The image below shows the nReset output drive.

    extended cap overview

  • USB Host Signals
    Related signals: USB_D-, USB_D+
    Recommended speed: USB full-speed interface (12Mbps)
  • 3.3V
    Voltage: 3.3V +-5%
    Max current: 3A (Continuous)
    Other specifications: TBD
  • 5V
    Voltage: 5.0V +-5%
    Max current: 1.5A (Peak), 1.0A (Continuous)
    Other specifications: TBD 

Software interface

  • UART
    The extension caps serial port (UART) interface can be controlled through the software port COM3:.
  • Power control
    To control power out of 5 Volt (Pin 3 and Pin 5) use functions aExp5vSetPower and aExp5vGetPower.
    To control power out of 3.3 Volt (Pin 7 and Pin 9) use functions aExp3dot3vSetPower and aExp3dot3vGetPower.
    To control nRESET (Pin 10) use functions aExpRSTSet and aExpRSTGet.
    All functions you’ll find in the latest Nautiz X8 SDK.
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