X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=decoders%2Fusb_signalling%2F__init__.py;h=1f6adbf0094a60c643e3bda21c3ad32b7d6b37d2;hb=cda1352a7ce0248e6db1996d9ddb9dbee2f91e8b;hp=32902e4561ac4ffdf3b08a993f889c21aa9a1bf8;hpb=50bd5d259677faf87bb3408e111d0e833d7ba9b4;p=libsigrokdecode.git diff --git a/decoders/usb_signalling/__init__.py b/decoders/usb_signalling/__init__.py index 32902e4..1f6adbf 100644 --- a/decoders/usb_signalling/__init__.py +++ b/decoders/usb_signalling/__init__.py @@ -19,7 +19,7 @@ ## ''' -USB (low-speed and full-speed) signalling protocol decoder. +This PD decodes the USB (low-speed and full-speed) signalling protocol. Electrical/signalling layer (USB spec, chapter 7): @@ -43,13 +43,9 @@ Data is transferred at a rate of 1.5Mbit/s (low-speed) / 12Mbit/s (full-speed). The SE0 transmitted to signal an end-of-packet is two bit intervals long (low-speed: 1.25uS - 1.50uS, full-speed: 160ns - 175ns). -Protocol output format: -TODO - Details: https://en.wikipedia.org/wiki/USB http://www.usb.org/developers/docs/ ''' from .pd import * -