Date:2011-01-03 20:32:52 (9 years 7 months ago)
Author:Werner Almesberger
Commit:08eec5b3a96f7c5d46d7b97cb3af8279c55b4967
Message:atusb/usb.sch: specified capacitance of TVSs (33 pF) and explained why

Files: atusb/usb.sch (5 diffs)

Change Details

atusb/usb.sch
1EESchema Schematic File Version 2 date Mon Jan 3 15:54:00 2011
1EESchema Schematic File Version 2 date Mon Jan 3 16:32:06 2011
22LIBS:power
33LIBS:device
44LIBS:conn
...... 
2222Comment3 ""
2323Comment4 ""
2424$EndDescr
25Text Notes 2600 5000 0 60 ~ 0
26USB 2.0 limits the capacitative load\non full-speed drivers to 50 pF.
2527Wire Notes Line
2628    6950 900 6900 900
2729Wire Notes Line
...... 
316318F 0 "VR3" V 3780 4300 50 0000 C CNN
317319F 1 "5V6" V 3700 4300 50 0000 C CNN
318320F 2 "0402" H 3700 4300 60 0001 C CNN
321F 4 "33pF" V 3600 4400 50 0000 C CNN "Field4"
319322    1 3700 4300
320323    -1 0 0 -1
321324$EndComp
...... 
326329F 0 "VR2" V 3480 4300 50 0000 C CNN
327330F 1 "5V6" V 3400 4300 50 0000 C CNN
328331F 2 "0402" H 3400 4300 60 0001 C CNN
332F 4 "33pF" V 3300 4400 50 0000 C CNN "Field4"
329333    1 3400 4300
330334    -1 0 0 -1
331335$EndComp
...... 
336340F 0 "VR1" V 3180 4300 50 0000 C CNN
337341F 1 "5V6" V 3100 4300 50 0000 C CNN
338342F 2 "0402" H 3100 4300 60 0001 C CNN
343F 4 "33pF" V 3000 4400 50 0000 C CNN "Field4"
339344    1 3100 4300
340345    -1 0 0 -1
341346$EndComp

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