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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
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8
artiq/coredevice/phaser.py
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@ -173,11 +173,9 @@ class Phaser:
delay(.5*ms)
patterns = [
[0xffff, 0xffff, 0x0000, 0x0000], # test channel
[0xaa55, 0x55aa, 0x55aa, 0xaa5a], # test iq
[0xaa55, 0xaa55, 0x55aa, 0x55aa], # test byte
[0x7a7a, 0xb6b6, 0xeaea, 0x4545], # ds pattern a
[0x1a1a, 0x1616, 0xaaaa, 0xc6c6], # ds pattern b
[0xf05a, 0x05af, 0x5af0, 0xaf05], # test channel/iq/byte/nibble
[0x7a7a, 0xb6b6, 0xeaea, 0x4545], # datasheet pattern a
[0x1a1a, 0x1616, 0xaaaa, 0xc6c6], # datasheet pattern b
]
# A data delay of 2*50 ps heuristically and reproducibly matches
# FPGA+board+DAC skews. There is plenty of margin (>= 250 ps