The synchronization interface is a single bidirectional line. Output for Master, input for Slave.
The sync_period value is relative to frame length and the digital interface clock. The actual synchronization
period will be: sync_period * frame_length * fb_clock_cycle
The converters on the usdrx1 generate 2.5GB/s. This more than we can
transport over the HP interconnects to the system memory.
Add a dedicated DDR FIFO to design which can be used to buffer the data
before it is transferred to the main memory.
Also increase the interconnect clock rate from 100MHz to 200MHz and the DMA
FIFO size from 4 to 8, so we can transfer the captured data faster to the
main memory.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
The memory mapped AXI interfaces for the AXI-DMAC are uni-directional.
Which means they are either write-only or read-only. Unfortunately the
Altera tools can't handle this, so we had to add dummy signals for the
other direction.
The Xilinx tools on the other hand handle uni-directional AXI interfaces
and in fact IPI can do a better job and use less resources when creating
the AXI interconnects when it knows that the interface is uni-directional.
So always disable the dummy ports for the IPI package.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
The converters on the usdrx1 generate 2.5GB/s. This more than we can
transport over the HP interconnects to the system memory.
Add a dedicated DDR FIFO to design which can be used to buffer the data
before it is transferred to the main memory.
Also increase the interconnect clock rate from 100MHz to 200MHz and the DMA
FIFO size from 4 to 8, so we can transfer the captured data faster to the
main memory.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Istvan Csomortani
Rejeesh Kutty
Adrian Costina
Lars-Peter Clausen