Qspi; Gpio Jumpers - Ublox BMD-34 EVK Series User Manual

• EXT_GND_DETECT is used by the debug interface to detect the presence of an external
target hardware. Connect EXT_GND_DETECT to GND on the target hardware.
• Connect GND to GND on the target hardware.
• Connect EXT_SWDIO to SWDIO and EXT_SWCLK to SWDCLK on the target BMD-34
module.
• (Optional) Connect EXT_SWO and/or EXT_RESETn on the target BMD-34 module.
• Connect external power to the target hardware, then connect the BMD-34 series evaluation
board to USB.
☞
At this point, the debug interface will interact with the target hardware instead of the on-
board BMD-34 module.

2.10 QSPI

A 64 Mbit Quad SPI (MX25R6435F) flash is available on the BMD-34-EVAL. This memory can
be used for execute in place (XIP) directly from the flash as well as general data storage.
Figure 11: Quad SPI flash

2.11 GPIO jumpers

Many solder bridge jumpers on the board are available to allow GPIO configuration. Most solder
jumpers are used to remove on-board components from the module's GPIO nets to eliminate
interference with external circuitry added on the I/O headers. All GPIOs are directly connected
to the I/O Headers by default, except P0.00 & P0.01 (32 kHz crystal), P0.09 & P0.10 (NFC
antenna), and P0.17 & P0.20 - P0.23 (QSPI). These are disconnected from the I/O headers as
they would interfere with the default functions. The GPIO jumpers are shown on the bottom of
the BMD-34 evaluation kit.
UBX-19033356 - R03 Hardware description
BMD-34 EVK - User guide
Page 12 of 20