mirror of https://github.com/openXC7/prjxray.git
57 lines
1.6 KiB
Markdown
57 lines
1.6 KiB
Markdown
# PULLTYPE
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PULLTYPE 38_98 39_97 39_97
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NONE X
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KEEPER X X
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PULLDOWN
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PULLUP X X
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# DRIVE
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Drive strength depends on current IOSTANDARD, e.g.
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LVCMOS18
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DRIVE 38_64 38_66 38_72 38_74 39_65 39_73
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4 X X X
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8 X X X
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12 X X X
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16 X X X
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24 X X X
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LVCMOS25
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DRIVE 38_64 38_66 38_72 38_74 39_65 39_73
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4 X X X
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8 X
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12
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16 X X X
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LVCMOS33
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DRIVE 38_64 38_66 38_72 38_74 39_65 39_73
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4 X X X
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8 X X X
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12 X X X
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16 X X X
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The minitest contains a csv target which generates a csv with differences across all LVCMOS and LVTTL standards for all supported DRIVE strengths and both slew rates.
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# IOSTANDARD
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Effects bits, TBD exactly how
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Sample output:
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diff LVCMOS33.bits LVTTL.bits
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< bit_00020026_006_00
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> bit_00020026_006_08
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diff LVCMOS33.bits PCI33_3.bits
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< bit_00020026_006_02
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< bit_00020026_006_18
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< bit_00020026_006_22
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> bit_00020026_006_10
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> bit_00020026_006_16
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> bit_00020026_006_20
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> bit_00020027_006_11
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> bit_00020027_006_15
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