diff --git a/hardware/icE1usb/r1.0/e1if.sch b/hardware/icE1usb/r1.0/e1if.sch
new file mode 100644
index 0000000..ded676c
--- /dev/null
+++ b/hardware/icE1usb/r1.0/e1if.sch
@@ -0,0 +1,731 @@
+EESchema Schematic File Version 4
+EELAYER 30 0
+EELAYER END
+$Descr A4 11693 8268
+encoding utf-8
+Sheet 3 7
+Title "icE1usb - E1 interface"
+Date "2020-08-26"
+Rev "1.0"
+Comp ""
+Comment1 "CERN-OHL-S"
+Comment2 "(C) 2020 Sylvain Munaut"
+Comment3 ""
+Comment4 ""
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+AR Path="/5F276580/5F278EB6" Ref="TR2"  Part="1" 
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+F 3 "https://productfinder.pulseeng.com/doc_type/WEB301/doc_num/T608/doc_part/T608.pdf" H 6500 3100 50  0001 C CNN
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+F 3 "https://productfinder.pulseeng.com/doc_type/WEB301/doc_num/T608/doc_part/T608.pdf" H 6500 5100 50  0001 C CNN
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+F 3 "https://assets.nexperia.com/documents/data-sheet/IP4220CZ6.pdf" H 8450 4075 50  0001 C CNN
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+F 3 "https://assets.nexperia.com/documents/data-sheet/IP4220CZ6.pdf" H 6050 4075 50  0001 C CNN
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+	1    0    0    -1  
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+F 3 "~" H 5500 5300 50  0001 C CNN
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+AR Path="/5F275ED4/5F3A466F" Ref="R16"  Part="1" 
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+F 3 "~" H 5500 4900 50  0001 C CNN
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+$EndComp
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+rx_bias_n
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+AR Path="/5F276580/5F567EF8" Ref="#PWR076"  Part="1" 
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+F 2 "" H 6000 4300 50  0001 C CNN
+F 3 "" H 6000 4300 50  0001 C CNN
+	1    6000 4300
+	1    0    0    -1  
+$EndComp
+$Comp
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+AR Path="/5F275ED4/5F56863E" Ref="#PWR042"  Part="1" 
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+F 3 "" H 6000 3700 50  0001 C CNN
+	1    6000 3700
+	1    0    0    -1  
+$EndComp
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+F 3 "~" H 5500 3100 50  0001 C CNN
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+$EndComp
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+Wire Wire Line
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+Wire Wire Line
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+Connection ~ 5500 3300
+Wire Wire Line
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+Connection ~ 5500 2900
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+AR Path="/5F276580/5F5728F2" Ref="C35"  Part="1" 
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+F 3 "~" H 4700 2500 50  0001 C CNN
+	1    4700 2500
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+$EndComp
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+AR Path="/5F275ED4/5F572E64" Ref="C19"  Part="1" 
+AR Path="/5F276580/5F572E64" Ref="C38"  Part="1" 
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+F 3 "~" H 4700 3700 50  0001 C CNN
+	1    4700 3700
+	0    1    1    0   
+$EndComp
+$Comp
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+AR Path="/5F275ED4/5F573016" Ref="C18"  Part="1" 
+AR Path="/5F276580/5F573016" Ref="C37"  Part="1" 
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+F 3 "~" H 4700 3300 50  0001 C CNN
+	1    4700 3300
+	0    1    1    0   
+$EndComp
+$Comp
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+U 1 1 5F573181
+P 4700 2900
+AR Path="/5F275ED4/5F573181" Ref="C17"  Part="1" 
+AR Path="/5F276580/5F573181" Ref="C36"  Part="1" 
+F 0 "C17" V 4471 2900 50  0000 C CNN
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+F 2 "Capacitor_SMD:C_0603_1608Metric" H 4700 2900 50  0001 C CNN
+F 3 "~" H 4700 2900 50  0001 C CNN
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+	0    1    1    0   
+$EndComp
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+Wire Wire Line
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+Wire Wire Line
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+Wire Wire Line
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+Text Notes 6800 1300 2    50   ~ 0
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+Wire Wire Line
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+Wire Wire Line
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+Wire Wire Line
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+Wire Wire Line
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+AR Path="/5F276580/5F357411" Ref="F6"  Part="1" 
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+F 4 "Littlefuse 0603L010" H 9000 3600 50  0001 C CNN "MPN"
+	1    9000 3600
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+$EndComp
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+Wire Wire Line
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+Wire Wire Line
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+F 3 "" H 3400 2000 60  0001 C CNN
+	1    3400 2000
+	1    0    0    -1  
+$EndComp
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+AR Path="/5F276580/5F57271B" Ref="RN8"  Part="3" 
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+F 3 "" H 3700 2000 60  0001 C CNN
+	2    3700 2000
+	1    0    0    -1  
+$EndComp
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+AR Path="/5F276580/5F572B9B" Ref="RN8"  Part="2" 
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+F 3 "" H 4000 2000 60  0001 C CNN
+	3    4000 2000
+	1    0    0    -1  
+$EndComp
+$Comp
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+AR Path="/5F276580/5F572E8F" Ref="RN8"  Part="1" 
+AR Path="/5F275ED4/5F572E8F" Ref="RN5"  Part="4" 
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+F 3 "" H 4300 2000 60  0001 C CNN
+	4    4300 2000
+	1    0    0    -1  
+$EndComp
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+AR Path="/5F276580/5F60CFAA" Ref="C33"  Part="1" 
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+F 3 "~" H 2300 2000 50  0001 C CNN
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+$EndComp
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+AR Path="/5F275ED4/5F62F137" Ref="C15"  Part="1" 
+AR Path="/5F276580/5F62F137" Ref="C34"  Part="1" 
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+F 3 "~" H 2700 2000 50  0001 C CNN
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+$Comp
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+AR Path="/5F275ED4/5F64CC0C" Ref="#PWR037"  Part="1" 
+AR Path="/5F276580/5F64CC0C" Ref="#PWR070"  Part="1" 
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+F 3 "" H 2300 2200 50  0001 C CNN
+	1    2300 2200
+	1    0    0    -1  
+$EndComp
+$Comp
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+AR Path="/5F275ED4/5F64CEF7" Ref="#PWR038"  Part="1" 
+AR Path="/5F276580/5F64CEF7" Ref="#PWR071"  Part="1" 
+F 0 "#PWR038" H 2700 1950 50  0001 C CNN
+F 1 "GND" H 2705 2027 50  0000 C CNN
+F 2 "" H 2700 2200 50  0001 C CNN
+F 3 "" H 2700 2200 50  0001 C CNN
+	1    2700 2200
+	1    0    0    -1  
+$EndComp
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+AR Path="/5F276580/5F691F95" Ref="#PWR072"  Part="1" 
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+$EndComp
+$Comp
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+AR Path="/5F275ED4/5F6923F7" Ref="#PWR040"  Part="1" 
+AR Path="/5F276580/5F6923F7" Ref="#PWR073"  Part="1" 
+F 0 "#PWR040" H 5500 1750 50  0001 C CNN
+F 1 "GND" H 5505 1827 50  0000 C CNN
+F 2 "" H 5500 2000 50  0001 C CNN
+F 3 "" H 5500 2000 50  0001 C CNN
+	1    5500 2000
+	1    0    0    -1  
+$EndComp
+$Comp
+L Device:R_Small R13
+U 1 1 5F692DEA
+P 5500 1400
+AR Path="/5F275ED4/5F692DEA" Ref="R13"  Part="1" 
+AR Path="/5F276580/5F692DEA" Ref="R24"  Part="1" 
+F 0 "R13" H 5558 1354 50  0000 L CNN
+F 1 "5k1" H 5558 1445 50  0000 L CNN
+F 2 "Resistor_SMD:R_0603_1608Metric" H 5500 1400 50  0001 C CNN
+F 3 "~" H 5500 1400 50  0001 C CNN
+	1    5500 1400
+	-1   0    0    1   
+$EndComp
+$Comp
+L Device:R_Small R14
+U 1 1 5F6930AE
+P 5500 1800
+AR Path="/5F275ED4/5F6930AE" Ref="R14"  Part="1" 
+AR Path="/5F276580/5F6930AE" Ref="R25"  Part="1" 
+F 0 "R14" H 5558 1754 50  0000 L CNN
+F 1 "5k1" H 5558 1845 50  0000 L CNN
+F 2 "Resistor_SMD:R_0603_1608Metric" H 5500 1800 50  0001 C CNN
+F 3 "~" H 5500 1800 50  0001 C CNN
+	1    5500 1800
+	-1   0    0    1   
+$EndComp
+Wire Wire Line
+	5500 1200 5500 1300
+Wire Wire Line
+	5500 1500 5500 1600
+Wire Wire Line
+	5500 1900 5500 2000
+$Comp
+L power:GND #PWR041
+U 1 1 5F69C19E
+P 5800 2000
+AR Path="/5F275ED4/5F69C19E" Ref="#PWR041"  Part="1" 
+AR Path="/5F276580/5F69C19E" Ref="#PWR074"  Part="1" 
+F 0 "#PWR041" H 5800 1750 50  0001 C CNN
+F 1 "GND" H 5805 1827 50  0000 C CNN
+F 2 "" H 5800 2000 50  0001 C CNN
+F 3 "" H 5800 2000 50  0001 C CNN
+	1    5800 2000
+	1    0    0    -1  
+$EndComp
+$Comp
+L Device:C_Small C20
+U 1 1 5F69C2E4
+P 5800 1800
+AR Path="/5F275ED4/5F69C2E4" Ref="C20"  Part="1" 
+AR Path="/5F276580/5F69C2E4" Ref="C39"  Part="1" 
+F 0 "C20" H 5892 1846 50  0000 L CNN
+F 1 "100n" H 5892 1755 50  0000 L CNN
+F 2 "Capacitor_SMD:C_0603_1608Metric" H 5800 1800 50  0001 C CNN
+F 3 "~" H 5800 1800 50  0001 C CNN
+	1    5800 1800
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	5500 1600 5800 1600
+Wire Wire Line
+	5800 1600 5800 1700
+Connection ~ 5500 1600
+Wire Wire Line
+	5500 1600 5500 1700
+Wire Wire Line
+	5800 1900 5800 2000
+Wire Wire Line
+	6100 3100 6100 1600
+Wire Wire Line
+	6100 1600 5800 1600
+Wire Wire Line
+	6100 3100 6300 3100
+Connection ~ 5800 1600
+NoConn ~ 6700 3100
+NoConn ~ 6300 5100
+NoConn ~ 6700 5100
+NoConn ~ 8400 3800
+NoConn ~ 8400 4200
+Entry Wire Line
+	9400 5100 9500 5000
+Entry Wire Line
+	9400 5300 9500 5200
+Entry Wire Line
+	9400 5400 9500 5300
+Entry Wire Line
+	9400 5200 9500 5100
+Wire Wire Line
+	9100 5100 9400 5100
+Wire Wire Line
+	9100 5200 9400 5200
+Wire Wire Line
+	9100 5300 9400 5300
+Wire Wire Line
+	9100 5400 9400 5400
+NoConn ~ 9100 5100
+NoConn ~ 9100 5200
+NoConn ~ 9100 5300
+NoConn ~ 9100 5400
+Text Label 9300 5100 2    50   ~ 0
+rj3
+Text Label 9300 5200 2    50   ~ 0
+rj6
+Text Label 9300 5300 2    50   ~ 0
+rj7
+Text Label 9300 5400 2    50   ~ 0
+rj8
+Wire Wire Line
+	9100 3600 9400 3600
+Wire Wire Line
+	9100 3500 9400 3500
+Wire Wire Line
+	8300 3500 7000 3500
+Wire Wire Line
+	7000 3500 7000 4100
+Wire Wire Line
+	7000 4100 7200 4100
+Wire Wire Line
+	8000 4000 7700 4000
+Wire Bus Line
+	9500 3000 9500 5300
+$EndSCHEMATC