ADV7280-M is 4 ch D1 interlace video input (M) & 1 ch MIPI CSI2 output. Could ADV7280A-M support Virtual Channel or not? Thank you.
The Virtual Channel identifier is controlled by CSI map, register 0x0D bits 7:6.
By default these register bits are 0b'00. Therefore, by default and in all ADI scripts the Virtual Channel identifier is set to 0b'00.
See ADV728x hardware manual for more information http://www.analog.com/media/en/technical-documentation/user-guides/ADV7280_7281_7282_7283_UG-637.pdf
The Virtual Channel of the ADV728x-M MIPI CSI-2 output can also be programmed to one of four values.
However, the ADV728x-M contains a single ADC. It can therefore only process one analog video source at a time. Therefore only one video source can be fed over the MIPI CSI-2 link at a time.