Ocean Optics Flame-S - Page 106

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.