The gasket inserts 1 cycle of latency in each forward direction (1 on command, 1 on
write data) and 2 on responses (2 on read data, 2 on write status). In addition, the
following stall conditions may occur.
- If a write command comes in and there are no free slots in the write
scoreboard, the entire command bus and write data bus stalls.
- If a read command comes in and there are no free slots in the read
scoreboard, the entire command bus stalls.
- If a write transaction is being timed out, then the write status bus stalls
while the write scoreboard flushes the command.
- If a read transaction is being timed out, then the read data bus stalls
while the read scoreboard flushes the command.