M-Labs
/
artiq
mirror of https://github.com/m-labs/artiq.git
2
0
Fork 1
Code Issues Projects Releases Wiki Activity

phaser: fewer iotest patterns

This commit is contained in:
Robert Jördens 2020-09-21 17:06:26 +02:00
parent d730851397
commit fdb2867757
1 changed files with 3 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
artiq/coredevice/phaser.py
View File

@ -173,11 +173,9 @@ class Phaser:
delay(.5*ms) delay(.5*ms)
patterns = [ patterns = [
[0xffff, 0xffff, 0x0000, 0x0000], # test channel [0xf05a, 0x05af, 0x5af0, 0xaf05], # test channel/iq/byte/nibble
[0xaa55, 0x55aa, 0x55aa, 0xaa5a], # test iq [0x7a7a, 0xb6b6, 0xeaea, 0x4545], # datasheet pattern a
[0xaa55, 0xaa55, 0x55aa, 0x55aa], # test byte [0x1a1a, 0x1616, 0xaaaa, 0xc6c6], # datasheet pattern b
[0x7a7a, 0xb6b6, 0xeaea, 0x4545], # ds pattern a
[0x1a1a, 0x1616, 0xaaaa, 0xc6c6], # ds pattern b
] ]
# A data delay of 2*50 ps heuristically and reproducibly matches # A data delay of 2*50 ps heuristically and reproducibly matches
# FPGA+board+DAC skews. There is plenty of margin (>= 250 ps # FPGA+board+DAC skews. There is plenty of margin (>= 250 ps