Technical Details
The interface consists of (per direction):
- 32 TTL signals for the data path
- 8 TTL signals for control
- one TTL signal for clock
- 8 TTL signals for optional additional multi-channel status
There are several clocking options. The interface operates around 100 MHz. Implementations of SPI-3 (PL-3) have been produced which allow somewhat higher clock rates. This is important when overhead bytes are added to incoming packets.
Read more about this topic: PL-3
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