* Added header license for the files that didn't have
* Modified parentheses
* Removed extra spaces at the end of lines
* Fixed parameters list to be each parameter on its line
* Deleted lines after endmodule and consecutive empty lines
* Fixed indentation
Signed-off-by: Iulia Moldovan <iulia.moldovan@analog.com>
Current implementation is correct only for datapath width of 8.
The buswidth of latency measurement inside a beat has a fixed width (3 bits)
for each lane that must be taken in account when computing the total latency.
Signed-off-by: Laszlo Nagy <laszlo.nagy@analog.com>
get_cell on i_lmfc/cdc_sync_stage1_reg doesn't return anything because design was updated.
This generates a CRITICAL WARNING and since the constraint it not necessary anymore, it can be deleted.
Dual clock mode is introduced in link layer to support different
datapath widths on the transport layer than on physical layer.
- Link clock : lane rate / 40 for input datapath width of 4 octets 8b10b
- Device clock : Link clock * input data path width / output datapath width
Supports four clock configurations, single or dual clock mode with or
without external device clock.
The configuration interface reflects the dual clock domain.
Make synthesis parameters accessible for the drivers.
Rework implementation to reflect the parameters of the actual core and
not of the AXI interfacing core.
To support deterministic latency with non-power of two octets per frame
(F=3,6) the interface width towards the transport layer must be resized
to match integer multiple of frames.
e.g Input datapath width = 4; Output datpath width = 6;
for F=3 one beat contains 2 frames
for F=6 one beat contains 1 frame
The width change is realized with a gearbox.
Due the interface width change the single clock domain core is split
in two clock domains.
- Link clock : lane rate / 40 for input datapath width of 4 octets 8b10b
- lane rate / 20 for input datapath width of 8 octets 8b10b
- lane rate / 66 for input datapath width of 8 octets 64b66b
- Device clock : Link clock * input data path width / output datapath width
Interface to transport layer and SYSREF handling is moved to device clock domain.
The configuration interface reflects the dual clock domain.
If Input and Output datapath width matches, the gearbox is no longer
required, a single clock can be connected to both clocks.
In order to keep resource utilization low and for better timing closure
allow disabling of the character replacement logic.
If the parameter is set the frame alignment monitoring is limited to links
where scrambling is on.
Add support to JESD204 RX and TX core for 8-byte 8b/10b link mode,
and frame alignment character replace/insert with or without scrambling.
Add support for xcelium simulator to jesd204/tb
Increased cores minor version.
If the lane looses synchronization due invalid characters or disparity
error the lane alignment monitor checks random input which results in
irrelevant reporting of frame alignment error.
If all lanes are synchronized (CGS state machine is in DATA phase) for long
enough therefore the link is also synchronized/DATA phase reset the error
counter since the accumulated values during INIT/CHECK are irrelevant.
These errors are handled by the per-lane CGS state machine.
All errors accumulated during INIT/CHECK phase of CGS are relevant only
if the link is unable to reach the DATA phase.
The link stays in DATA phase unless software resets it,
so all errors accumulated during the DATA phase are relevant.
The previous implementation of the de-glitch only delayed the assertion
of the SYNC phase by 64 clock cycles with the DEGLITCH state but if meanwhile
one of the lanes got into a bad state cgs_ready de-asserted the state machine
continued to go SYNCHRONIZED (DATA) state.
This change extends the required number of consecutive cycles while all lanes
must stay in data phase before moving the link to SYNCHRONIZED state from 8 to 256;
This increases the reliability of link bring-up without needing extra
link restarts from software side.
When frame alignment error monitoring is enabled and error threshold is met
at least for one lane, generate an interrupt so software can reset the link and
do further bring-up steps.
Add support for RX frame alignment character checking when scrambling is enabled and
for link reset on misalignment.
Add support for xcelium simulator to jesd204/tb
For consistent simulation behavior it is recommended to annotate all source
files with a timescale. Add it to those where it is currently missing.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
In case when the SYSREF is connected to an FPGA IO which has a limitation
on the IOB register IN_FF clock line and the required ref clock is high
we can't use the IOB registers.
e.g. the max clock rate on zcu102 HP IO FF is 312MHz but ref clock is 375MHz;
If IOB is used in this case a pulse width violation is reported.
This change makes the IOB placement selectable in such case or
for targets which don't require class 1 operation.
Typically only one of the character error conditions is true at a time. And
even if multiple errors were present at the same time we'd only want to
count one error per character.
For each character track whether at least one of the monitored error
conditions is true. Then count the number of characters for which at least
one error condition occurred. And finally add that sum to the total numbers
of errors.
This results in a slightly better utilization.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
When the link is explicitly disabled through the control interface reset
the error statistics counter.
There is usually little benefit to preserving until after the link has been
disabled. If software is interested in the values it can read them before
disabling the link. Having them reset makes the behavior consistent with
all other internal state of the jesd204 RX peripheral, which is reset when
the link is disabled.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Iulia Moldovan
Ionut Podgoreanu
Iacob_Liviu
Filip Gherman
Nick Pillitteri
Laszlo Nagy
Adrian Costina
Istvan Csomortani
stefan.raus
Matt Blanton
Lars-Peter Clausen