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Revision bea9406b

Added by Kévin Redon over 4 years ago

schematic: mark USB reset circuit as dot no place

the additional circuit to reset USB (by pulling D+ low) is not
required anymore since the USB controller in the SAM3S integrates
this capability.
the SAM3S-EK Development Board also demonstrates only the inline
27 Ohm termination resistors are required.

this change has been tested (behind 2 USB HUBs).
the RESET button still works.
resetting using DFU into the bootloader and starting the
application from the bootloader still works.

Change-Id: I648a041f6d3cf456f1783249546078961f85e662

View differences:

hardware/kicad/SIMtrace.sch
468 468 
L Device:R R16
469 469 
U 1 1 4DC7A441
470 470 
P 2300 900
471 
F 0 "R16" V 2380 900 50  0000 C CNN
471 
F 0 "R16" V 2200 900 50  0000 C CNN
472 472 
F 1 "10K" V 2300 900 50  0000 C CNN
473 473 
F 2 "SM0603" H 2300 900 60  0001 C CNN
474 474 
F 3 "" H 2300 900 60  0001 C CNN
475 
F 4 "DNP" V 2400 900 50  0000 C CNN "Place"
475 476 
	1    2300 900
476 477 
	0    1    1    0
477 478 
$EndComp
......
483 484 
F 1 "BC847" V 2100 1500 50  0000 R CNN
484 485 
F 2 "SOT23_BC847" H 2150 1100 60  0001 C CNN
485 486 
F 3 "" H 2150 1100 60  0001 C CNN
487 
F 4 "DNP" V 2200 1350 50  0000 C CNN "Place"
486 488 
	1    2150 1100
487 489 
	0    -1   1    0
488 490 
$EndComp
......
546 548 
F 1 "33pF" H 2150 1900 50  0000 L CNN
547 549 
F 2 "SM0603" H 2150 1800 60  0001 C CNN
548 550 
F 3 "" H 2150 1800 60  0001 C CNN
551 
F 4 "DNP" H 2350 1800 50  0000 C CNN "Place"
549 552 
	1    2150 1800
550 553 
	-1   0    0    1
551 554 
$EndComp
......
557 560 
F 1 "15pF" H 2500 2000 50  0000 L CNN
558 561 
F 2 "SM0603" H 2700 2100 60  0001 C CNN
559 562 
F 3 "" H 2700 2100 60  0001 C CNN
563 
F 4 "DNP" H 2500 2100 50  0000 C CNN "Place"
560 564 
	1    2700 2100
561 565 
	1    0    0    -1
562 566 
$EndComp
......
568 572 
F 1 "15pF" H 2900 1700 50  0000 L CNN
569 573 
F 2 "SM0603" H 2850 1800 60  0001 C CNN
570 574 
F 3 "" H 2850 1800 60  0001 C CNN
575 
F 4 "DNP" H 3050 1800 50  0000 C CNN "Place"
571 576 
	1    2850 1800
572 577 
	1    0    0    -1
573 578 
$EndComp
......
1445 1450 
L SIMtrace:SCHOTTKY D1
1446 1451 
U 1 1 526C4CBB
1447 1452 
P 2150 1450
1448 
F 0 "D1" H 2150 1550 40  0000 C CNN
1453 
F 0 "D1" H 2100 1550 40  0000 C CNN
1449 1454 
F 1 "MBR0530" H 2150 1350 40  0001 C CNN
1450 1455 
F 2 "SOD123" H 2150 1450 60  0001 C CNN
1451 
F 3 "~" H 2150 1450 60  0000 C CNN
1456 
F 3 "" H 2150 1450 60  0000 C CNN
1457 
F 4 "DNP" H 2250 1550 50  0000 C CNN "Place"
1452 1458 
	1    2150 1450
1453 1459 
	1    0    0    -1
1454 1460 
$EndComp
......
2084 2090 
F 1 "100K" V 1000 700 50  0000 C CNN
2085 2091 
F 2 "SM0603" H 1000 700 60  0001 C CNN
2086 2092 
F 3 "" H 1000 700 60  0001 C CNN
2093 
F 4 "DNP" V 1100 700 50  0000 C CNN "Place"
2087 2094 
	1    1000 700
2088 2095 
	0    1    1    0
2089 2096 
$EndComp
......
2382 2389 
L Device:R R3
2383 2390 
U 1 1 4DC79ECE
2384 2391 
P 1400 1550
2385 
F 0 "R3" H 1250 1500 50  0000 C CNN
2386 
F 1 "1K5" H 1250 1600 50  0000 C CNN
2392 
F 0 "R3" H 1250 1450 50  0000 C CNN
2393 
F 1 "1K5" H 1250 1550 50  0000 C CNN
2387 2394 
F 2 "SM0603" H 1400 1550 60  0001 C CNN
2388 2395 
F 3 "" H 1400 1550 60  0001 C CNN
2396 
F 4 "DNP" H 1250 1650 50  0000 C CNN "Place"
2389 2397 
	1    1400 1550
2390 2398 
	-1   0    0    1
2391 2399 
$EndComp
......
2397 2405 
F 1 "BC847" V 1050 800 50  0000 R CNN
2398 2406 
F 2 "SOT23_BC847" H 1150 900 60  0001 C CNN
2399 2407 
F 3 "" H 1150 900 60  0001 C CNN
2408 
F 4 "DNP" V 1150 700 50  0000 C CNN "Place"
2400 2409 
	1    1150 900
2401 2410 
	0    -1   1    0
2402 2411 
$EndComp

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