C02con.sch

EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 3 5
Title "RTB - C02"
Date "2024-07-13"
Rev "0"
Comp "Frank Schumacher"
Comment1 "DCC/Railcom logger"
Comment2 ""
Comment3 ""
Comment4 "Licensed under the Apache License, Version 2.0"
$EndDescr
$Comp
L power:GNDD #PWR?
U 1 1 5B6E09B7
P 3250 2500
AR Path="/5B6E09B7" Ref="#PWR?"  Part="1" 
AR Path="/5B6E0562/5B6E09B7" Ref="#PWR06"  Part="1" 
F 0 "#PWR06" H 3250 2250 50  0001 C CNN
F 1 "GNDD" H 3255 2327 50  0000 C CNN
F 2 "" H 3250 2500 50  0001 C CNN
F 3 "" H 3250 2500 50  0001 C CNN
	1    3250 2500
	0    -1   -1   0   
$EndComp
Text GLabel 1600 1750 0    50   Input ~ 0
DCC-a
Text GLabel 1600 1900 0    50   Input ~ 0
DCC-b
$Comp
L Device:R R?
U 1 1 5B6E0A03
P 2100 3550
AR Path="/5B6E0A03" Ref="R?"  Part="1" 
AR Path="/5B6E0562/5B6E0A03" Ref="R9"  Part="1" 
F 0 "R9" H 2170 3596 50  0000 L CNN
F 1 "33k" H 2170 3505 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 2030 3550 50  0001 C CNN
F 3 "~" H 2100 3550 50  0001 C CNN
	1    2100 3550
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5B6E0A0A
P 2100 4000
AR Path="/5B6E0A0A" Ref="R?"  Part="1" 
AR Path="/5B6E0562/5B6E0A0A" Ref="R10"  Part="1" 
F 0 "R10" H 2170 4046 50  0000 L CNN
F 1 "100k" H 2170 3955 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 2030 4000 50  0001 C CNN
F 3 "~" H 2100 4000 50  0001 C CNN
	1    2100 4000
	1    0    0    -1  
$EndComp
$Comp
L power:GNDD #PWR?
U 1 1 5B6E0A11
P 2100 4250
AR Path="/5B6E0A11" Ref="#PWR?"  Part="1" 
AR Path="/5B6E0562/5B6E0A11" Ref="#PWR04"  Part="1" 
F 0 "#PWR04" H 2100 4000 50  0001 C CNN
F 1 "GNDD" H 2105 4077 50  0000 C CNN
F 2 "" H 2100 4250 50  0001 C CNN
F 3 "" H 2100 4250 50  0001 C CNN
	1    2100 4250
	1    0    0    -1  
$EndComp
Wire Wire Line
	2100 4150 2100 4250
Text GLabel 2300 3800 2    50   Output ~ 0
DCCpin
Wire Wire Line
	1600 1750 2100 1750
$Comp
L Device:R R?
U 1 1 5B6E0A1A
P 3100 3550
AR Path="/5B6E0A1A" Ref="R?"  Part="1" 
AR Path="/5B6E0562/5B6E0A1A" Ref="R11"  Part="1" 
F 0 "R11" H 3170 3596 50  0000 L CNN
F 1 "33k" H 3170 3505 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 3030 3550 50  0001 C CNN
F 3 "~" H 3100 3550 50  0001 C CNN
	1    3100 3550
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5B6E0A21
P 3100 4000
AR Path="/5B6E0A21" Ref="R?"  Part="1" 
AR Path="/5B6E0562/5B6E0A21" Ref="R12"  Part="1" 
F 0 "R12" H 3170 4046 50  0000 L CNN
F 1 "100k" H 3170 3955 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 3030 4000 50  0001 C CNN
F 3 "~" H 3100 4000 50  0001 C CNN
	1    3100 4000
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5B6E0A28
P 4000 3550
AR Path="/5B6E0A28" Ref="R?"  Part="1" 
AR Path="/5B6E0562/5B6E0A28" Ref="R13"  Part="1" 
F 0 "R13" H 4070 3596 50  0000 L CNN
F 1 "220k" H 4070 3505 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 3930 3550 50  0001 C CNN
F 3 "~" H 4000 3550 50  0001 C CNN
	1    4000 3550
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5B6E0A2F
P 4000 4000
AR Path="/5B6E0A2F" Ref="R?"  Part="1" 
AR Path="/5B6E0562/5B6E0A2F" Ref="R14"  Part="1" 
F 0 "R14" H 4070 4046 50  0000 L CNN
F 1 "10k" H 4070 3955 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 3930 4000 50  0001 C CNN
F 3 "~" H 4000 4000 50  0001 C CNN
	1    4000 4000
	1    0    0    -1  
$EndComp
Wire Wire Line
	3100 3700 3100 3800
Wire Wire Line
	4000 3700 4000 3800
Wire Wire Line
	3100 3800 3300 3800
Connection ~ 3100 3800
Wire Wire Line
	3100 3800 3100 3850
Wire Wire Line
	4000 3800 4200 3800
Connection ~ 4000 3800
Wire Wire Line
	4000 3800 4000 3850
Text GLabel 3300 3800 2    50   Output ~ 0
PWRpin
Text GLabel 4200 3800 2    50   Output ~ 0
ALGpin
$Comp
L power:GNDD #PWR?
U 1 1 5B6E0A40
P 3100 4250
AR Path="/5B6E0A40" Ref="#PWR?"  Part="1" 
AR Path="/5B6E0562/5B6E0A40" Ref="#PWR05"  Part="1" 
F 0 "#PWR05" H 3100 4000 50  0001 C CNN
F 1 "GNDD" H 3105 4077 50  0000 C CNN
F 2 "" H 3100 4250 50  0001 C CNN
F 3 "" H 3100 4250 50  0001 C CNN
	1    3100 4250
	1    0    0    -1  
$EndComp
$Comp
L power:GNDD #PWR?
U 1 1 5B6E0A46
P 4000 4250
AR Path="/5B6E0A46" Ref="#PWR?"  Part="1" 
AR Path="/5B6E0562/5B6E0A46" Ref="#PWR08"  Part="1" 
F 0 "#PWR08" H 4000 4000 50  0001 C CNN
F 1 "GNDD" H 4005 4077 50  0000 C CNN
F 2 "" H 4000 4250 50  0001 C CNN
F 3 "" H 4000 4250 50  0001 C CNN
	1    4000 4250
	1    0    0    -1  
$EndComp
Wire Wire Line
	3100 4150 3100 4250
Wire Wire Line
	4000 4150 4000 4250
Wire Wire Line
	2100 3700 2100 3800
Wire Wire Line
	2300 3800 2100 3800
Connection ~ 2100 3800
Wire Wire Line
	2100 3800 2100 3850
Wire Wire Line
	1600 1900 2200 1900
Wire Wire Line
	3100 3100 3100 3400
Wire Wire Line
	4000 3100 4000 3400
Connection ~ 4000 3100
Connection ~ 3100 3100
Text GLabel 1600 2350 0    50   Output ~ 0
DCC-1
Text GLabel 1600 2500 0    50   Output ~ 0
DCC-2
Wire Wire Line
	1600 2350 2100 2350
Connection ~ 2100 2350
Wire Wire Line
	2100 2350 2100 2050
Wire Wire Line
	1600 2500 2200 2500
Connection ~ 2200 2500
Wire Wire Line
	2200 2500 2200 2950
Text GLabel 5450 3100 2    50   Output ~ 0
VTRACK
$Comp
L Connector:Conn_01x06_Male J?
U 1 1 5BA67ADD
P 1600 6750
AR Path="/5B6C6B9D/5BA67ADD" Ref="J?"  Part="1" 
AR Path="/5B6E0562/5BA67ADD" Ref="J3"  Part="1" 
F 0 "J3" H 1600 7050 50  0000 C CNN
F 1 "Conn_01x06_Male" H 1600 6350 50  0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x06_Pitch2.54mm" H 1600 6750 50  0001 C CNN
F 3 "~" H 1600 6750 50  0001 C CNN
	1    1600 6750
	1    0    0    -1  
$EndComp
Wire Wire Line
	1800 6550 2100 6550
Wire Wire Line
	1800 6650 2100 6650
NoConn ~ 1800 6750
Wire Wire Line
	1800 7050 2100 7050
$Comp
L Connector:Screw_Terminal_01x04 J6
U 1 1 5BD21707
P 3850 6850
F 0 "J6" H 3850 6550 50  0000 C CNN
F 1 "Screw_Terminal_01x04" H 3850 7100 50  0000 C CNN
F 2 "TerminalBlock_RND:TerminalBlock_RND_205-00003_1x04_P5.00mm_Horizontal" H 3850 6850 50  0001 C CNN
F 3 "~" H 3850 6850 50  0001 C CNN
	1    3850 6850
	-1   0    0    1   
$EndComp
Text Label 4500 6850 2    50   ~ 0
bstDCC-1
$Comp
L Device:D_Schottky D19
U 1 1 5BD27774
P 5450 6800
F 0 "D19" V 5200 6750 50  0000 L CNN
F 1 "SS34FA" V 5100 6750 50  0000 L CNN
F 2 "Diode_SMD:D_SOD-123F" H 5450 6800 50  0001 C CNN
F 3 "~" H 5450 6800 50  0001 C CNN
	1    5450 6800
	0    1    1    0   
$EndComp
$Comp
L Device:D_Schottky D10
U 1 1 5BD27842
P 5200 6800
F 0 "D10" V 5450 6850 50  0000 R CNN
F 1 "SS34FA" V 5550 6950 50  0000 R CNN
F 2 "Diode_SMD:D_SOD-123F" H 5200 6800 50  0001 C CNN
F 3 "~" H 5200 6800 50  0001 C CNN
	1    5200 6800
	0    -1   -1   0   
$EndComp
Wire Wire Line
	5200 6650 5450 6650
Connection ~ 5450 6650
Wire Wire Line
	5450 6650 5700 6650
Wire Wire Line
	5700 6950 5450 6950
Connection ~ 5450 6950
Wire Wire Line
	5450 6950 5200 6950
Wire Wire Line
	4050 6750 4650 6750
Wire Wire Line
	4650 6750 4650 6950
Wire Wire Line
	4650 6950 4050 6950
Wire Wire Line
	4050 6850 4750 6850
Wire Wire Line
	4750 6850 4750 7150
Wire Wire Line
	5450 7150 5450 6950
Text Label 4150 6750 0    50   ~ 0
DCC-2
Text Label 4150 6650 0    50   ~ 0
DCC-1
$Comp
L Device:R R21
U 1 1 5BD27710
P 5700 6800
F 0 "R21" H 5770 6846 50  0000 L CNN
F 1 "10" H 5770 6755 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric" V 5630 6800 50  0001 C CNN
F 3 "~" H 5700 6800 50  0001 C CNN
	1    5700 6800
	1    0    0    -1  
$EndComp
$Comp
L Diode:BAT54S D3
U 1 1 5BFEC1FD
P 2650 2250
F 0 "D3" H 2250 2150 50  0000 C CNN
F 1 "BAT54S" H 2150 2250 50  0000 C CNN
F 2 "Package_TO_SOT_SMD:SOT-323_SC-70" H 2725 2375 50  0001 L CNN
F 3 "https://www.diodes.com/assets/Datasheets/ds11005.pdf" H 2530 2250 50  0001 C CNN
	1    2650 2250
	-1   0    0    1   
$EndComp
$Comp
L Diode:BAT54S D4
U 1 1 5BFEE69C
P 2650 2750
F 0 "D4" H 2250 2750 50  0000 C CNN
F 1 "BAT54S" H 2150 2650 50  0000 C CNN
F 2 "Package_TO_SOT_SMD:SOT-323_SC-70" H 2725 2875 50  0001 L CNN
F 3 "https://www.diodes.com/assets/Datasheets/ds11005.pdf" H 2530 2750 50  0001 C CNN
	1    2650 2750
	-1   0    0    -1  
$EndComp
Wire Wire Line
	2200 1900 2200 2500
Wire Wire Line
	2950 2750 2950 2500
Wire Wire Line
	2650 2050 2100 2050
Connection ~ 2100 2050
Wire Wire Line
	2100 2050 2100 1750
Wire Wire Line
	2650 2950 2200 2950
Wire Wire Line
	2350 2250 2350 2750
Wire Wire Line
	2350 3100 3100 3100
Connection ~ 2350 2750
Wire Wire Line
	2350 2750 2350 3100
$Comp
L Device:R R?
U 1 1 5BFFDC12
P 4900 3800
AR Path="/5BFFDC12" Ref="R?"  Part="1" 
AR Path="/5B6E0562/5BFFDC12" Ref="R32"  Part="1" 
F 0 "R32" H 4970 3846 50  0000 L CNN
F 1 "10k" H 4970 3755 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 4830 3800 50  0001 C CNN
F 3 "~" H 4900 3800 50  0001 C CNN
	1    4900 3800
	1    0    0    -1  
$EndComp
Wire Wire Line
	4900 3650 4900 3100
$Comp
L power:GNDD #PWR?
U 1 1 5C0018AD
P 4900 4250
AR Path="/5C0018AD" Ref="#PWR?"  Part="1" 
AR Path="/5B6E0562/5C0018AD" Ref="#PWR028"  Part="1" 
F 0 "#PWR028" H 4900 4000 50  0001 C CNN
F 1 "GNDD" H 4905 4077 50  0000 C CNN
F 2 "" H 4900 4250 50  0001 C CNN
F 3 "" H 4900 4250 50  0001 C CNN
	1    4900 4250
	1    0    0    -1  
$EndComp
Wire Wire Line
	4900 3950 4900 4250
Text Notes 5000 3650 0    50   ~ 10
n.f.
Wire Wire Line
	2100 2350 2100 3400
Wire Wire Line
	4000 3100 4900 3100
Wire Wire Line
	3100 3100 4000 3100
NoConn ~ 1800 6950
NoConn ~ 1800 6850
Text GLabel 2100 6550 2    50   BiDi ~ 0
DCC-2
Text GLabel 2100 6650 2    50   BiDi ~ 0
DCC-1
Text GLabel 2100 7050 2    50   Output ~ 0
VTRACK
Connection ~ 4900 3100
Wire Wire Line
	4900 3100 5450 3100
Wire Wire Line
	2950 2500 3250 2500
Connection ~ 2950 2500
Wire Wire Line
	2950 2500 2950 2250
Wire Wire Line
	4750 7150 5450 7150
Wire Wire Line
	4050 6650 5200 6650
Connection ~ 5200 6650
Wire Notes Line
	3250 6000 6400 6000
Wire Notes Line
	6400 6000 6400 7500
Wire Notes Line
	6400 7500 3250 7500
Wire Notes Line
	3250 7500 3250 6000
Text Notes 3300 6150 0    50   ~ 0
External DCC connector
Wire Notes Line
	1050 6000 2750 6000
Wire Notes Line
	2750 6000 2750 7500
Wire Notes Line
	2750 7500 1050 7500
Wire Notes Line
	1050 7500 1050 6000
Text Notes 1100 6150 0    50   ~ 0
(optional) DCC pin header
Wire Notes Line
	1050 1350 6400 1350
Wire Notes Line
	6400 1350 6400 4650
Wire Notes Line
	6400 4650 1050 4650
Wire Notes Line
	1050 4650 1050 1350
Text Notes 1150 1550 0    79   ~ 0
DCC signal
Wire Wire Line
	8800 3600 8800 3450
$Comp
L power:GNDD #PWR?
U 1 1 5B8F6427
P 8800 3600
AR Path="/5B8F6427" Ref="#PWR?"  Part="1" 
AR Path="/5B6E0562/5B8F6427" Ref="#PWR026"  Part="1" 
F 0 "#PWR026" H 8800 3350 50  0001 C CNN
F 1 "GNDD" H 8805 3427 50  0000 C CNN
F 2 "" H 8800 3600 50  0001 C CNN
F 3 "" H 8800 3600 50  0001 C CNN
	1    8800 3600
	1    0    0    -1  
$EndComp
Wire Wire Line
	8800 3050 8800 3150
Wire Wire Line
	8800 2450 9150 2450
Wire Wire Line
	8800 2750 8800 2450
$Comp
L Device:R R?
U 1 1 5B8F3907
P 8800 2900
AR Path="/5B8F3907" Ref="R?"  Part="1" 
AR Path="/5B6E0562/5B8F3907" Ref="R28"  Part="1" 
F 0 "R28" H 8870 2946 50  0000 L CNN
F 1 "100k" H 8870 2855 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 8730 2900 50  0001 C CNN
F 3 "~" H 8800 2900 50  0001 C CNN
	1    8800 2900
	1    0    0    -1  
$EndComp
$Comp
L Device:LED D16
U 1 1 5B8F3744
P 8800 3300
F 0 "D16" V 8838 3182 50  0000 R CNN
F 1 "LED(grn)" V 8747 3182 50  0000 R CNN
F 2 "LED_SMD:LED_0603_1608Metric" H 8800 3300 50  0001 C CNN
F 3 "~" H 8800 3300 50  0001 C CNN
	1    8800 3300
	0    -1   -1   0   
$EndComp
Text GLabel 9150 2450 2    50   Output ~ 0
5V
Wire Notes Line
	7300 1350 10500 1350
Wire Notes Line
	10500 1350 10500 4650
Wire Notes Line
	10500 4650 7300 4650
Wire Notes Line
	7300 4650 7300 1350
Text Notes 7400 1600 0    79   ~ 0
CPU power
Text Notes 800  850  0    118  ~ 0
Track Interface
$EndSCHEMATC