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8: Firmware and Advanced Communications
96 225-00000-000-11-201604
USB High Speed (480Mbps) Packet Format
In this mode, the first 2K worth of data is read from EP6In and the rest is read from EP2In. The
packet format is described below.
Packet # End Point # Bytes Pixels
0 EP6In 512 0-255
1 EP6In 512 256-511
2 EP6In 512 512-767
3 EP6In 512 768-1023
4 EP2In 512 1024-1279
5 EP2In 512 1280-1535
…
EP2In 512
14 EP2In 512 3584
–3840
15 EP2In 1 Sync Packet
The format for the first packet is as follows (all other packets except the synch packet has a
similar format except the pixel numbers are incremented by 256 pixels for each packet).
Packet 0
Byte 0 Byte 1 Byte 2 Byte 3
Pixel 0 LSB Pixel 0 MSB Pixel 1 LSB Pixel 2 MSB
…
Byte 510 Byte 511
Pixel 255 LSB Pixel 255 MSB
Packet 15 – Synchronization Packet (1 byte)
Byte 0
0x69
USB Full Speed (12Mbps) Packet Format
In this mode all data is read from EP2In. The pixel and packet format is shown below.