Device Firmware And Configuration - XMOS VocalFusion XVF3510 User Manual

In addition to the standard USB configuration shown above, the XVF3510-UA also supports an
alternative configuration in which the AEC reference signal is supplied over an I2S bus.
Figure 1-3 XVF3510-UA Configuration using I2S audio reference

1.4. DEVICE FIRMWARE AND CONFIGURATION

The operation of the XVF3510 device is controlled through a firmware image that is loaded onto the
device when it is powered up. Two modes of operation are supported:
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The firmware image can either be stored in a QSPI Flash device which is read by the XFV3510
processor automatically, or
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The firmware image is downloaded to the XVF3510 processor over the SPI interface by the host
processor on the system board.
Selection of the boot mode is made via setting the QSPI_D1/BOOTSEL pin on the device as described
in the datasheet.
The firmware image configures the XVF3510 into a standard, default operational mode. This mode can
be modified at startup via a set of configuration parameters that are stored in the flash device along
with the firmware in the XVF3510 Data Partition. These commands can be used to reconfigure the
device during startup, and also initialise other devices attached to it.
If the device firmware is downloaded from the host, then the data partition is not required and the
device is configured directly over the control interface.
XM-014232-PC 7