The MIPI CSI-2 standard v2.0 specific VCX support feature extends the maximum available virtual channels to 16. When enabled, the virtual channel is deduced by combining the 2-bit VC field (LSB) and the 2-bit VCX field (MSB) from the packet header.
Note: The IP reports ECC errors if the source is sending VC>3 and
VCX Support is not selected. Hence, the source should not send VC>3 when VCX Support
is not selected.