Skip to content
GitLab
Explore
Sign in
Register
Primary navigation
Search or go to…
Project
H
HDL
Manage
Activity
Members
Labels
Plan
Issues
Issue boards
Milestones
Iterations
Wiki
Requirements
Jira
Code
Merge requests
Repository
Branches
Commits
Tags
Repository graph
Compare revisions
Snippets
Locked files
Build
Pipelines
Jobs
Pipeline schedules
Test cases
Artifacts
Deploy
Releases
Container Registry
Model registry
Operate
Environments
Monitor
Incidents
Analyze
Value stream analytics
Contributor analytics
CI/CD analytics
Repository analytics
Code review analytics
Issue analytics
Insights
Model experiments
Help
Help
Support
GitLab documentation
Compare GitLab plans
Community forum
Contribute to GitLab
Provide feedback
Keyboard shortcuts
?
Snippets
Groups
Projects
Show more breadcrumbs
RTSD
HDL
Commits
18fe9386
Commit
18fe9386
authored
2 years ago
by
Eric Kooistra
Browse files
Options
Downloads
Patches
Plain Diff
Some more ideas.
parent
fbb14a2b
No related branches found
Branches containing commit
No related tags found
No related merge requests found
Pipeline
#44890
passed
2 years ago
Stage: simulation
Stage: synthesis
Changes
1
Pipelines
1
Hide whitespace changes
Inline
Side-by-side
Showing
1 changed file
applications/lofar2/doc/prestudy/station2_sdp_transient_buffer.txt
+16
-8
16 additions, 8 deletions
...ons/lofar2/doc/prestudy/station2_sdp_transient_buffer.txt
with
16 additions
and
8 deletions
applications/lofar2/doc/prestudy/station2_sdp_transient_buffer.txt
+
16
−
8
View file @
18fe9386
...
...
@@ -14,6 +14,7 @@ Detailed design: Transient Buffer (TBuf) function for LIFT project
References:
[1] LIFT requirements: https://plm.astron.nl/polarion/#/project/LOFAR2System/wiki/Overview%20pages/LIFT%20Reference
https://plm.astron.nl/polarion/#/project/LOFAR2System/workitem?id=LOFAR2-11847
https://git.astron.nl/desp/hdl/-/blob/L2SDP-857/applications/lofar2/doc/prestudy/lift_sdp_transient_buffer.txt
[2] https://support.astron.nl/confluence/display/L2M/2022-10-24+LIFT+meeting+notes
...
...
@@ -229,22 +230,29 @@ Design decision 16GByte DDR4 na L2SDP-854, 850
5) TBuf ICD SC-SDP, SDPTR-SDPFW
- Control Points (CP):
. FPGA_tbuf_alloc_RW [pn][si] --> start page, nof_pages (or as seperate CP?)
- nof_pages = 0 means si has no buffer, > 0 means si has buffer
. FPGA_tbuf_record_RW [pn][si] --> start/continue (True) or stop (= freeze) (False) recording
. FPGA_tbuf_retrieve_RW --> pn, si, ssn, nof_pre_pages, nof_post_pages (or as seperate CP?)
- allow only retrieve from one (pn, si) at a time
. FPGA_tbuf_alloc_start_page_RW [pn][si] # in range 0:2M-1
FPGA_tbuf_alloc_nof_pages_RW [pn][si] # 0 = free, > 0 = in use
. FPGA_tbuf_record_RW [pn][si] # True = start/continue, False = stop/freeze recording
. FPGA_tbuf_retrieve_timestamp_RW [pn][si]
FPGA_tbuf_retrieve_nof_pre_pages_RW [pn][si]
FPGA_tbuf_retrieve_nof_post_pages_RW [pn][si]
. FPGA_tbuf_retrieve_enable_RW
- total nof pages = nof_pre_pages + 1 (pointed by ssn) + nof_post_pages
. FPGA_tbuf_output_hdr_eth_destination_mac_RW
. FPGA_tbuf_output_hdr_ip_destination_address_RW
. FPGA_tbuf_output_hdr_udp_destination_port_RW
. FPGA_tbuf_output_enable_RW
- Monitor Points (MP):
. FPGA_tbuf_total_nof_pages_R --> 16G / 8k = 2M
. FPGA_tbuf_total_nof_pages_R --> 16G
B
/ 8k
B
= 2M
. FPGA_tbuf_page_size_R --> 8 kByte
. FPGA_tbuf_nof_samples_per_page_R --> 8176
. FPGA_tbuf_page_period_R --> 23.36 us
. FPGA_tbuf_nof_samples_per_page_R --> 4672 # = (8kB - 16) * 8b / 14b
. FPGA_tbuf_nof_bits_per-sample_R --> 14 b
. FPGA_tbuf_sample_period_R --> 5 ns
. FPGA_tbuf_page_period_R # = FPGA_tbuf_sample_period_R * 23.36 us
. FPGA_tbuf_recording_R [pn][si]
. FPGA_tbuf_retrieving_R [pn][si]
Maybe:
...
...
This diff is collapsed.
Click to expand it.
Preview
0%
Loading
Try again
or
attach a new file
.
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Save comment
Cancel
Please
register
or
sign in
to comment