ben-blinkenlights/ubb-patgen/hw/ubb-patgen.sch

EESchema Schematic File Version 2  date Mon Jan  7 10:11:27 2013
LIBS:pwr
LIBS:c
LIBS:8_10-card
LIBS:conn
LIBS:ubb-patgen-cache
EELAYER 25  0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date "7 jan 2013"
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L 8:10-CARD P1
U 1 1 50E715C3
P 8200 3400
F 0 "P1" H 8000 3950 60  0000 C CNN
F 1 "8:10-CARD" H 8250 2800 60  0000 C CNN
	1    8200 3400
	1    0    0    -1  
$EndComp
$Comp
L CONN_4 P2
U 1 1 50EABCA4
P 3450 3250
F 0 "P2" V 3400 3250 50  0000 C CNN
F 1 "CONN_4" V 3500 3250 50  0000 C CNN
	1    3450 3250
	-1   0    0    -1  
$EndComp
$Comp
L GND #PWR01
U 1 1 50EABCDB
P 7700 4100
F 0 "#PWR01" H 7700 4100 30  0001 C CNN
F 1 "GND" H 7700 4030 30  0001 C CNN
	1    7700 4100
	1    0    0    -1  
$EndComp
Text Label 4000 3100 0    60   ~ 0
CH2
Text Label 4000 3200 0    60   ~ 0
CH3
Text Label 4000 3300 0    60   ~ 0
CH0
Text Label 4000 3400 0    60   ~ 0
CH1
$Comp
L C C1
U 1 1 50EABD55
P 7000 4200
F 0 "C1" V 7100 4300 60  0000 L CNN
F 1 "1n" V 7100 4000 60  0000 L CNN
	1    7000 4200
	0    -1   -1   0   
$EndComp
$Comp
L CONN_1 P3
U 1 1 50EABD9A
P 3650 3700
F 0 "P3" H 3730 3700 40  0000 L CNN
F 1 "CONN_1" H 3650 3755 30  0001 C CNN
	1    3650 3700
	-1   0    0    1   
$EndComp
$Comp
L CONN_1 P4
U 1 1 50EABDA9
P 3650 3900
F 0 "P4" H 3730 3900 40  0000 L CNN
F 1 "CONN_1" H 3650 3955 30  0001 C CNN
	1    3650 3900
	-1   0    0    1   
$EndComp
$Comp
L GND #PWR03
U 1 1 50EABDD5
P 6000 4100
F 0 "#PWR03" H 6000 4100 30  0001 C CNN
F 1 "GND" H 6000 4030 30  0001 C CNN
	1    6000 4100
	1    0    0    -1  
$EndComp
Text Label 4000 3700 0    60   ~ 0
TRIGGER/CLK
Text Label 4000 3900 0    60   ~ 0
GND
Text Notes 3700 5200 0    60   ~ 0
C1: pull CMD low for start bit of fake R1 response.
Text Notes 3900 5350 0    60   ~ 0
1 nF raises from 0 V through 10 kOhm pull-up at approx. 0.3 V/us.
Text Notes 3900 5500 0    60   ~ 0
1 nF falls from 3.3 V to 0.8 V through Ron of approx. 90 Ohm within 130 ns.
Wire Wire Line
	7900 3100 3800 3100
Wire Wire Line
	7900 3200 3800 3200
Wire Wire Line
	7900 3700 6200 3700
Wire Wire Line
	6200 3700 6200 3300
Wire Wire Line
	6200 3300 3800 3300
Wire Wire Line
	7900 3800 6100 3800
Wire Wire Line
	6100 3800 6100 3400
Wire Wire Line
	6100 3400 3800 3400
Wire Wire Line
	7700 4100 7700 3600
Wire Wire Line
	7700 3600 7900 3600
Wire Wire Line
	6600 3300 6600 4200
Wire Wire Line
	6600 3300 7900 3300
Wire Wire Line
	7900 3500 5600 3500
Wire Wire Line
	5600 3500 5600 3700
Wire Wire Line
	5600 3700 3800 3700
Wire Wire Line
	3800 3900 6000 3900
Wire Wire Line
	6000 3900 6000 4100
Wire Wire Line
	7400 3400 7900 3400
Wire Wire Line
	7400 3400 7400 4200
Wire Wire Line
	7400 4200 7200 4200
Wire Wire Line
	6600 4200 6800 4200
Text Notes 3900 5650 0    60   ~ 0
(A configuration with C1 connected to GND would be largely equivalent.)
$EndSCHEMATC