EESchema Schematic File Version 2
LIBS:74xgxx
LIBS:74xx
LIBS:ac-dc
LIBS:actel
LIBS:adc-dac
LIBS:Altera
LIBS:analog_devices
LIBS:analog_switches
LIBS:atmel
LIBS:audio
LIBS:brooktre
LIBS:cmos4000
LIBS:cmos_ieee
LIBS:conn
LIBS:contrib
LIBS:cypress
LIBS:dc-dc
LIBS:device
LIBS:digital-audio
LIBS:diode
LIBS:display
LIBS:dsp
LIBS:elec-unifil
LIBS:ESD_Protection
LIBS:ftdi
LIBS:gennum
LIBS:graphic
LIBS:hc11
LIBS:intel
LIBS:interface
LIBS:ir
LIBS:Lattice
LIBS:linear
LIBS:logo
LIBS:maxim
LIBS:memory
LIBS:microchip
LIBS:microchip_dspic33dsc
LIBS:microchip_pic10mcu
LIBS:microchip_pic12mcu
LIBS:microchip_pic16mcu
LIBS:microchip_pic18mcu
LIBS:microchip_pic32mcu
LIBS:microcontrollers
LIBS:motor_drivers
LIBS:motorola
LIBS:msp430
LIBS:nordicsemi
LIBS:nxp_armmcu
LIBS:onsemi
LIBS:opto
LIBS:Oscillators
LIBS:philips
LIBS:power
LIBS:powerint
LIBS:Power_Management
LIBS:pspice
LIBS:references
LIBS:regul
LIBS:relays
LIBS:rfcom
LIBS:sensors
LIBS:silabs
LIBS:siliconi
LIBS:stm8
LIBS:stm32
LIBS:supertex
LIBS:switches
LIBS:texas
LIBS:transf
LIBS:transistors
LIBS:ttl_ieee
LIBS:valves
LIBS:video
LIBS:Xicor
LIBS:xilinx
LIBS:Zilog
LIBS:SPIDIFF01A-cache
EELAYER 25 0
EELAYER END
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L R R2
U 1 1 55C3364C
P 1950 1850
F 0 "R2" V 2030 1850 50  0000 C CNN
F 1 "1k" V 1950 1850 50  0000 C CNN
F 2 "Mlab_R:SMD-0805" V 1880 1850 30  0001 C CNN
F 3 "" H 1950 1850 30  0000 C CNN
        1    1950 1850
        1    0    0    -1  
$EndComp
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L R R1
U 1 1 55C3364D
P 1650 1850
F 0 "R1" V 1730 1850 50  0000 C CNN
F 1 "1k" V 1650 1850 50  0000 C CNN
F 2 "Mlab_R:SMD-0805" V 1580 1850 30  0001 C CNN
F 3 "" H 1650 1850 30  0000 C CNN
        1    1650 1850
        1    0    0    -1  
$EndComp
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L C C5
U 1 1 55C33655
P 4450 1700
F 0 "C5" H 4475 1800 50  0000 L CNN
F 1 "100nF" H 4475 1600 50  0000 L CNN
F 2 "Mlab_R:SMD-0805" H 4488 1550 30  0001 C CNN
F 3 "" H 4450 1700 60  0000 C CNN
        1    4450 1700
        1    0    0    -1  
$EndComp
$Comp
L GND #PWR17
U 1 1 55C33658
P 4450 1850
F 0 "#PWR17" H 4450 1600 50  0001 C CNN
F 1 "GND" H 4450 1700 50  0000 C CNN
F 2 "" H 4450 1850 60  0000 C CNN
F 3 "" H 4450 1850 60  0000 C CNN
        1    4450 1850
        1    0    0    -1  
$EndComp
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L GND #PWR30
U 1 1 55C36383
P 9700 4250
F 0 "#PWR30" H 9700 4000 50  0001 C CNN
F 1 "GND" H 9700 4100 50  0000 C CNN
F 2 "" H 9700 4250 60  0000 C CNN
F 3 "" H 9700 4250 60  0000 C CNN
        1    9700 4250
        1    0    0    -1  
$EndComp
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L R R3
U 1 1 56128A83
P 3950 2450
F 0 "R3" V 4030 2450 50  0000 C CNN
F 1 "120" V 3950 2450 50  0000 C CNN
F 2 "Mlab_R:SMD-0805" V 3880 2450 30  0001 C CNN
F 3 "" H 3950 2450 30  0000 C CNN
        1    3950 2450
        1    0    0    -1  
$EndComp
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L RJ45_RJHSE-5384 J2
U 1 1 568B891C
P 2500 2450
F 0 "J2" H 2500 3074 60  0000 C CNN
F 1 "RJ45_RJHSE-5384" H 2500 2975 51  0000 C CNN
F 2 "Mlab_CON:RJHSE-5384(RJ45)" H 2500 2450 60  0001 C CNN
F 3 "" H 2500 2450 60  0000 C CNN
        1    2500 2450
        1    0    0    -1  
$EndComp
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L JUMP_2x1 J20
U 1 1 568B9545
P 10200 4050
F 0 "J20" H 9850 4250 50  0000 C CNN
F 1 "JUMP_2x1" V 10200 4200 40  0001 C CNN
F 2 "Mlab_Pin_Headers:Straight_1x02" H 10200 4050 60  0001 C CNN
F 3 "" H 10200 4050 60  0000 C CNN
        1    10200 4050
        1    0    0    -1  
$EndComp
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L JUMP_2x1 J21
U 1 1 568B95C0
P 10200 4150
F 0 "J21" H 9850 4350 50  0000 C CNN
F 1 "JUMP_2x1" V 10200 4300 40  0001 C CNN
F 2 "Mlab_Pin_Headers:Straight_1x02" H 10200 4150 60  0001 C CNN
F 3 "" H 10200 4150 60  0000 C CNN
        1    10200 4150
        1    0    0    -1  
$EndComp
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L JUMP_2x1 J19
U 1 1 568B97B4
P 10200 3950
F 0 "J19" H 9850 4150 50  0000 C CNN
F 1 "JUMP_2x1" V 10200 4100 40  0001 C CNN
F 2 "Mlab_Pin_Headers:Straight_1x02" H 10200 3950 60  0001 C CNN
F 3 "" H 10200 3950 60  0000 C CNN
        1    10200 3950
        1    0    0    -1  
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L JUMP_2x1 J22
U 1 1 568B9802
P 10200 4250
F 0 "J22" H 9850 4450 50  0000 C CNN
F 1 "JUMP_2x1" V 10200 4400 40  0001 C CNN
F 2 "Mlab_Pin_Headers:Straight_1x02" H 10200 4250 60  0001 C CNN
F 3 "" H 10200 4250 60  0000 C CNN
        1    10200 4250
        1    0    0    -1  
$EndComp
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L JUMP_2x1 J23
U 1 1 568B985E
P 10200 4350
F 0 "J23" H 9850 4550 50  0000 C CNN
F 1 "JUMP_2x1" V 10200 4500 40  0001 C CNN
F 2 "Mlab_Pin_Headers:Straight_1x02" H 10200 4350 60  0001 C CNN
F 3 "" H 10200 4350 60  0000 C CNN
        1    10200 4350
        1    0    0    -1  
$EndComp
$Comp
L LM1117 U1
U 1 1 568BD657
P 2400 6850
F 0 "U1" H 2250 7050 60  0000 C CNN
F 1 "LM1117 5V" H 2660 6590 60  0000 C CNN
F 2 "Mlab_IO:SOT-223" H 2400 6850 60  0001 C CNN
F 3 "" H 2400 6850 60  0000 C CNN
        1    2400 6850
        1    0    0    -1  
$EndComp
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L C C1
U 1 1 568BD989
P 1950 7000
F 0 "C1" H 1975 7100 50  0000 L CNN
F 1 "10uF/16V" H 1975 6900 50  0000 L CNN
F 2 "Mlab_R:SMD-0805" H 1988 6850 30  0001 C CNN
F 3 "" H 1950 7000 60  0000 C CNN
        1    1950 7000
        1    0    0    -1  
$EndComp
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L C C2
U 1 1 568BDEAC
P 2950 7000
F 0 "C2" H 2975 7100 50  0000 L CNN
F 1 "10uF" H 2975 6900 50  0000 L CNN
F 2 "Mlab_R:SMD-0805" H 2988 6850 30  0001 C CNN
F 3 "" H 2950 7000 60  0000 C CNN
        1    2950 7000
        1    0    0    -1  
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L GND #PWR6
U 1 1 568BE13C
P 1950 7200
F 0 "#PWR6" H 1950 6950 50  0001 C CNN
F 1 "GND" H 1950 7050 50  0000 C CNN
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F 3 "" H 1950 7200 60  0000 C CNN
        1    1950 7200
        1    0    0    -1  
$EndComp
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L GND #PWR7
U 1 1 568BE45F
P 2400 7200
F 0 "#PWR7" H 2400 6950 50  0001 C CNN
F 1 "GND" H 2400 7050 50  0000 C CNN
F 2 "" H 2400 7200 60  0000 C CNN
F 3 "" H 2400 7200 60  0000 C CNN
        1    2400 7200
        1    0    0    -1  
$EndComp
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L GND #PWR9
U 1 1 568BE4AE
P 2950 7200
F 0 "#PWR9" H 2950 6950 50  0001 C CNN
F 1 "GND" H 2950 7050 50  0000 C CNN
F 2 "" H 2950 7200 60  0000 C CNN
F 3 "" H 2950 7200 60  0000 C CNN
        1    2950 7200
        1    0    0    -1  
$EndComp
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L C C3
U 1 1 568BF9C5
P 3350 7000
F 0 "C3" H 3375 7100 50  0000 L CNN
F 1 "10uF" H 3375 6900 50  0000 L CNN
F 2 "Mlab_R:SMD-0805" H 3388 6850 30  0001 C CNN
F 3 "" H 3350 7000 60  0000 C CNN
        1    3350 7000
        1    0    0    -1  
$EndComp
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L GND #PWR12
U 1 1 568BFB23
P 3350 7200
F 0 "#PWR12" H 3350 6950 50  0001 C CNN
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F 2 "" H 3350 7200 60  0000 C CNN
F 3 "" H 3350 7200 60  0000 C CNN
        1    3350 7200
        1    0    0    -1  
$EndComp
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L D_ZENER D1
U 1 1 568C1495
P 1550 6950
F 0 "D1" H 1550 7050 50  0000 C CNN
F 1 "SMBJ15A-E3/52" H 1550 6850 50  0000 C CNN
F 2 "Mlab_D:Diode-SMB_Standard" H 1550 6950 60  0001 C CNN
F 3 "" H 1550 6950 60  0000 C CNN
        1    1550 6950
        0    1    1    0   
$EndComp
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L GND #PWR2
U 1 1 568C1528
P 1550 7200
F 0 "#PWR2" H 1550 6950 50  0001 C CNN
F 1 "GND" H 1550 7050 50  0000 C CNN
F 2 "" H 1550 7200 60  0000 C CNN
F 3 "" H 1550 7200 60  0000 C CNN
        1    1550 7200
        1    0    0    -1  
$EndComp
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L JUMP_3X2 J10
U 1 1 568C2E13
P 750 6500
F 0 "J10" H 400 6700 50  0000 C CNN
F 1 "JUMP_3X2" V 750 6550 40  0001 C CNN
F 2 "Mlab_Pin_Headers:Straight_2x03" H 750 6500 60  0001 C CNN
F 3 "" H 750 6500 60  0000 C CNN
        1    750  6500
        -1   0    0    -1  
$EndComp
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L GND #PWR1
U 1 1 568C3B5D
P 1200 6600
F 0 "#PWR1" H 1200 6350 50  0001 C CNN
F 1 "GND" H 1200 6450 50  0000 C CNN
F 2 "" H 1200 6600 60  0000 C CNN
F 3 "" H 1200 6600 60  0000 C CNN
        1    1200 6600
        -1   0    0    -1  
$EndComp
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L CONN_3 J12
U 1 1 568C8AEC
P 6900 2350
F 0 "J12" H 6900 2350 50  0000 C CNN
F 1 "Slave/Master" H 7050 2250 40  0000 C CNN
F 2 "Mlab_Pin_Headers:Straight_1x03" H 6900 2350 60  0001 C CNN
F 3 "" H 6900 2350 60  0000 C CNN
        1    6900 2350
        1    0    0    1   
$EndComp
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L GND #PWR10
U 1 1 568D0F20
P 3230 2500
F 0 "#PWR10" H 3230 2250 50  0001 C CNN
F 1 "GND" H 3230 2350 50  0000 C CNN
F 2 "" H 3230 2500 60  0000 C CNN
F 3 "" H 3230 2500 60  0000 C CNN
        1    3230 2500
        1    0    0    -1  
$EndComp
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SCLK+
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$Comp
L JUMP_2x1 J4
U 1 1 568D8FDE
P 3600 3150
F 0 "J4" H 3250 3350 50  0000 C CNN
F 1 "JUMP_2x1" V 3600 3300 40  0001 C CNN
F 2 "Mlab_Pin_Headers:Straight_2x01" H 3600 3150 60  0001 C CNN
F 3 "" H 3600 3150 60  0000 C CNN
        1    3600 3150
        1    0    0    -1  
$EndComp
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L JUMP_2x1 J5
U 1 1 568D9408
P 3600 3250
F 0 "J5" H 3250 3450 50  0000 C CNN
F 1 "JUMP_2x1" V 3600 3400 40  0001 C CNN
F 2 "Mlab_Pin_Headers:Straight_2x01" H 3600 3250 60  0001 C CNN
F 3 "" H 3600 3250 60  0000 C CNN
        1    3600 3250
        1    0    0    -1  
$EndComp
$Comp
L JUMP_2x1 J6
U 1 1 568DB005
P 3600 3600
F 0 "J6" H 3250 3800 50  0000 C CNN
F 1 "JUMP_2x1" V 3600 3750 40  0001 C CNN
F 2 "Mlab_Pin_Headers:Straight_2x01" H 3600 3600 60  0001 C CNN
F 3 "" H 3600 3600 60  0000 C CNN
        1    3600 3600
        1    0    0    -1  
$EndComp
$Comp
L JUMP_2x1 J7
U 1 1 568DB07B
P 3600 3700
F 0 "J7" H 3250 3900 50  0000 C CNN
F 1 "JUMP_2x1" V 3600 3850 40  0001 C CNN
F 2 "Mlab_Pin_Headers:Straight_2x01" H 3600 3700 60  0001 C CNN
F 3 "" H 3600 3700 60  0000 C CNN
        1    3600 3700
        1    0    0    -1  
$EndComp
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L JUMP_2x1 J8
U 1 1 568DB1C8
P 3600 3850
F 0 "J8" H 3250 4050 50  0000 C CNN
F 1 "JUMP_2x1" V 3600 4000 40  0001 C CNN
F 2 "Mlab_Pin_Headers:Straight_2x01" H 3600 3850 60  0001 C CNN
F 3 "" H 3600 3850 60  0000 C CNN
        1    3600 3850
        1    0    0    -1  
$EndComp
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L JUMP_2x1 J9
U 1 1 568DB2A0
P 3600 3950
F 0 "J9" H 3250 4150 50  0000 C CNN
F 1 "JUMP_2x1" V 3600 4100 40  0001 C CNN
F 2 "Mlab_Pin_Headers:Straight_2x01" H 3600 3950 60  0001 C CNN
F 3 "" H 3600 3950 60  0000 C CNN
        1    3600 3950
        1    0    0    -1  
$EndComp
$Comp
L HOLE M1
U 1 1 568DCC14
P 9950 5350
F 0 "M1" H 9950 5450 60  0000 C CNN
F 1 "HOLE" H 9950 5250 60  0000 C CNN
F 2 "Mlab_Mechanical:MountingHole_3mm" H 9950 5350 60  0001 C CNN
F 3 "" H 9950 5350 60  0000 C CNN
        1    9950 5350
        1    0    0    -1  
$EndComp
$Comp
L HOLE M2
U 1 1 568DCFB0
P 9950 5750
F 0 "M2" H 9950 5850 60  0000 C CNN
F 1 "HOLE" H 9950 5650 60  0000 C CNN
F 2 "Mlab_Mechanical:MountingHole_3mm" H 9950 5750 60  0001 C CNN
F 3 "" H 9950 5750 60  0000 C CNN
        1    9950 5750
        1    0    0    -1  
$EndComp
$Comp
L HOLE M3
U 1 1 568DD0C8
P 10400 5350
F 0 "M3" H 10400 5450 60  0000 C CNN
F 1 "HOLE" H 10400 5250 60  0000 C CNN
F 2 "Mlab_Mechanical:MountingHole_3mm" H 10400 5350 60  0001 C CNN
F 3 "" H 10400 5350 60  0000 C CNN
        1    10400 5350
        1    0    0    -1  
$EndComp
$Comp
L HOLE M4
U 1 1 568DD160
P 10400 5750
F 0 "M4" H 10400 5850 60  0000 C CNN
F 1 "HOLE" H 10400 5650 60  0000 C CNN
F 2 "Mlab_Mechanical:MountingHole_3mm" H 10400 5750 60  0001 C CNN
F 3 "" H 10400 5750 60  0000 C CNN
        1    10400 5750
        1    0    0    -1  
$EndComp
$Comp
L GND #PWR32
U 1 1 568DD284
P 10100 5900
F 0 "#PWR32" H 10100 5650 50  0001 C CNN
F 1 "GND" H 10100 5750 50  0000 C CNN
F 2 "" H 10100 5900 60  0000 C CNN
F 3 "" H 10100 5900 60  0000 C CNN
        1    10100 5900
        1    0    0    -1  
$EndComp
$Comp
L GND #PWR34
U 1 1 568DD5CF
P 10550 5900
F 0 "#PWR34" H 10550 5650 50  0001 C CNN
F 1 "GND" H 10550 5750 50  0000 C CNN
F 2 "" H 10550 5900 60  0000 C CNN
F 3 "" H 10550 5900 60  0000 C CNN
        1    10550 5900
        1    0    0    -1  
$EndComp
$Comp
L GND #PWR31
U 1 1 568DD74E
P 10100 5450
F 0 "#PWR31" H 10100 5200 50  0001 C CNN
F 1 "GND" H 10100 5300 50  0000 C CNN
F 2 "" H 10100 5450 60  0000 C CNN
F 3 "" H 10100 5450 60  0000 C CNN
        1    10100 5450
        1    0    0    -1  
$EndComp
$Comp
L GND #PWR33
U 1 1 568DD805
P 10550 5450
F 0 "#PWR33" H 10550 5200 50  0001 C CNN
F 1 "GND" H 10550 5300 50  0000 C CNN
F 2 "" H 10550 5450 60  0000 C CNN
F 3 "" H 10550 5450 60  0000 C CNN
        1    10550 5450
        1    0    0    -1  
$EndComp
$Comp
L D_4xZENER D2
U 1 1 568CF656
P 1750 4850
F 0 "D2" H 1350 5000 50  0000 C CNN
F 1 "SP1001-04XTG" H 1500 4650 50  0000 C CNN
F 2 "Mlab_IO:SOT-553" H 1750 5350 60  0001 C CNN
F 3 "" H 1750 5350 60  0000 C CNN
        1    1750 4850
        1    0    0    -1  
$EndComp
$Comp
L D_4xZENER D3
U 1 1 568CFCCB
P 2550 4850
F 0 "D3" H 2150 5000 50  0000 C CNN
F 1 "SP1001-04XTG" H 2300 4650 50  0000 C CNN
F 2 "Mlab_IO:SOT-553" H 2550 5350 60  0001 C CNN
F 3 "" H 2550 5350 60  0000 C CNN
        1    2550 4850
        1    0    0    -1  
$EndComp
$Comp
L GND #PWR4
U 1 1 568D07D8
P 1800 5200
F 0 "#PWR4" H 1800 4950 50  0001 C CNN
F 1 "GND" H 1800 5050 50  0000 C CNN
F 2 "" H 1800 5200 60  0000 C CNN
F 3 "" H 1800 5200 60  0000 C CNN
        1    1800 5200
        1    0    0    -1  
$EndComp
$Comp
L GND #PWR8
U 1 1 568D09EB
P 2600 5200
F 0 "#PWR8" H 2600 4950 50  0001 C CNN
F 1 "GND" H 2600 5050 50  0000 C CNN
F 2 "" H 2600 5200 60  0000 C CNN
F 3 "" H 2600 5200 60  0000 C CNN
        1    2600 5200
        1    0    0    -1  
$EndComp
$Comp
L VDD #PWR11
U 1 1 56937D75
P 3350 6550
F 0 "#PWR11" H 3350 6400 50  0001 C CNN
F 1 "VDD" H 3350 6700 50  0000 C CNN
F 2 "" H 3350 6550 60  0000 C CNN
F 3 "" H 3350 6550 60  0000 C CNN
        1    3350 6550
        1    0    0    -1  
$EndComp
$Comp
L R R15
U 1 1 56B24B76
P 3230 2290
F 0 "R15" V 3310 2290 50  0000 C CNN
F 1 "1k" V 3230 2290 50  0000 C CNN
F 2 "Mlab_R:SMD-0805" V 3160 2290 30  0001 C CNN
F 3 "" H 3230 2290 30  0000 C CNN
        1    3230 2290
        -1   0    0    1   
$EndComp
$Comp
L C C8
U 1 1 56B25436
P 3450 2290
F 0 "C8" H 3475 2390 50  0000 L CNN
F 1 "100nF" H 3475 2190 50  0000 L CNN
F 2 "Mlab_R:SMD-0805" H 3488 2140 30  0001 C CNN
F 3 "" H 3450 2290 60  0000 C CNN
        1    3450 2290
        1    0    0    -1  
$EndComp
$Comp
L GND #PWR13
U 1 1 56B269EF
P 3450 2510
F 0 "#PWR13" H 3450 2260 50  0001 C CNN
F 1 "GND" H 3450 2360 50  0000 C CNN
F 2 "" H 3450 2510 60  0000 C CNN
F 3 "" H 3450 2510 60  0000 C CNN
        1    3450 2510
        1    0    0    -1  
$EndComp
$Comp
L JUMP_2x1 J1
U 1 1 57D80B60
P 3600 3350
F 0 "J1" H 3250 3550 50  0000 C CNN
F 1 "JUMP_2x1" V 3600 3500 40  0001 C CNN
F 2 "Mlab_Pin_Headers:Straight_2x01" H 3600 3350 60  0001 C CNN
F 3 "" H 3600 3350 60  0000 C CNN
        1    3600 3350
        1    0    0    -1  
$EndComp
$Comp
L JUMP_2x1 J3
U 1 1 57D80B66
P 3600 3450
F 0 "J3" H 3250 3650 50  0000 C CNN
F 1 "JUMP_2x1" V 3600 3600 40  0001 C CNN
F 2 "Mlab_Pin_Headers:Straight_2x01" H 3600 3450 60  0001 C CNN
F 3 "" H 3600 3450 60  0000 C CNN
        1    3600 3450
        1    0    0    -1  
$EndComp
Text Label 2850 3300 0    60   ~ 0
MOSI-
Text Label 2850 3200 0    60   ~ 0
MOSI+
Text Label 1550 4650 1    60   ~ 0
MISO+
Text Label 1700 4650 1    60   ~ 0
MISO-
Text Label 1850 4650 1    60   ~ 0
MOSI+
Text Label 2000 4650 1    60   ~ 0
MOSI-
Text Label 2350 4650 1    60   ~ 0
CS+
Text Label 2500 4650 1    60   ~ 0
CS-
Text Label 2650 4650 1    60   ~ 0
SCLK+
Text Label 2800 4650 1    60   ~ 0
SCLK-
$Comp
L SP3485EP U3
U 1 1 57D85642
P 4800 2450
F 0 "U3" H 4600 3050 50  0000 C CNN
F 1 "SP3485EP" H 4550 2950 50  0000 C CNN
F 2 "DIP-8" H 4600 2850 50  0000 C CIN
F 3 "" H 4800 2450 50  0000 C CNN
        1    4800 2450
        -1   0    0    -1  
$EndComp
$Comp
L VDD #PWR5
U 1 1 57D8A505
P 1950 1650
F 0 "#PWR5" H 1950 1500 50  0001 C CNN
F 1 "VDD" H 1950 1800 50  0000 C CNN
F 2 "" H 1950 1650 60  0000 C CNN
F 3 "" H 1950 1650 60  0000 C CNN
        1    1950 1650
        1    0    0    -1  
$EndComp
$Comp
L GND #PWR19
U 1 1 57D8ABD0
P 4800 2900
F 0 "#PWR19" H 4800 2650 50  0001 C CNN
F 1 "GND" H 4800 2750 50  0000 C CNN
F 2 "" H 4800 2900 60  0000 C CNN
F 3 "" H 4800 2900 60  0000 C CNN
        1    4800 2900
        1    0    0    -1  
$EndComp
Text Label 9500 3800 0    60   ~ 0
MISO
Text Label 9500 3900 0    60   ~ 0
MOSI
Text Label 9500 4000 0    60   ~ 0
CS
Text Label 9500 4100 0    60   ~ 0
SCLK
$Comp
L C C4
U 1 1 57DA989E
P 3650 4550
F 0 "C4" H 3675 4650 50  0000 L CNN
F 1 "100nF" H 3675 4450 50  0000 L CNN
F 2 "Mlab_R:SMD-0805" H 3688 4400 30  0001 C CNN
F 3 "" H 3650 4550 60  0000 C CNN
        1    3650 4550
        1    0    0    -1  
$EndComp
$Comp
L GND #PWR14
U 1 1 57DA98A4
P 3650 4700
F 0 "#PWR14" H 3650 4450 50  0001 C CNN
F 1 "GND" H 3650 4550 50  0000 C CNN
F 2 "" H 3650 4700 60  0000 C CNN
F 3 "" H 3650 4700 60  0000 C CNN
        1    3650 4700
        1    0    0    -1  
$EndComp
$Comp
L R R4
U 1 1 57DA98AA
P 3150 5300
F 0 "R4" V 3230 5300 50  0000 C CNN
F 1 "120" V 3150 5300 50  0000 C CNN
F 2 "Mlab_R:SMD-0805" V 3080 5300 30  0001 C CNN
F 3 "" H 3150 5300 30  0000 C CNN
        1    3150 5300
        1    0    0    -1  
$EndComp
$Comp
L SP3485EP U2
U 1 1 57DA98B1
P 4000 5300
F 0 "U2" H 3800 5900 50  0000 C CNN
F 1 "SP3485EP" H 3750 5800 50  0000 C CNN
F 2 "DIP-8" H 3800 5700 50  0000 C CIN
F 3 "" H 4000 5300 50  0000 C CNN
        1    4000 5300
        -1   0    0    -1  
$EndComp
$Comp
L VDD #PWR15
U 1 1 57DA98BF
P 4000 4250
F 0 "#PWR15" H 4000 4100 50  0001 C CNN
F 1 "VDD" H 4000 4400 50  0000 C CNN
F 2 "" H 4000 4250 60  0000 C CNN
F 3 "" H 4000 4250 60  0000 C CNN
        1    4000 4250
        1    0    0    -1  
$EndComp
$Comp
L GND #PWR16
U 1 1 57DA98C7
P 4000 5750
F 0 "#PWR16" H 4000 5500 50  0001 C CNN
F 1 "GND" H 4000 5600 50  0000 C CNN
F 2 "" H 4000 5750 60  0000 C CNN
F 3 "" H 4000 5750 60  0000 C CNN
        1    4000 5750
        1    0    0    -1  
$EndComp
$Comp
L C C7
U 1 1 57DA9B2A
P 7700 4550
F 0 "C7" H 7725 4650 50  0000 L CNN
F 1 "100nF" H 7725 4450 50  0000 L CNN
F 2 "Mlab_R:SMD-0805" H 7738 4400 30  0001 C CNN
F 3 "" H 7700 4550 60  0000 C CNN
        1    7700 4550
        1    0    0    -1  
$EndComp
$Comp
L GND #PWR25
U 1 1 57DA9B30
P 7700 4700
F 0 "#PWR25" H 7700 4450 50  0001 C CNN
F 1 "GND" H 7700 4550 50  0000 C CNN
F 2 "" H 7700 4700 60  0000 C CNN
F 3 "" H 7700 4700 60  0000 C CNN
        1    7700 4700
        1    0    0    -1  
$EndComp
$Comp
L R R6
U 1 1 57DA9B36
P 7200 5300
F 0 "R6" V 7280 5300 50  0000 C CNN
F 1 "120" V 7200 5300 50  0000 C CNN
F 2 "Mlab_R:SMD-0805" V 7130 5300 30  0001 C CNN
F 3 "" H 7200 5300 30  0000 C CNN
        1    7200 5300
        1    0    0    -1  
$EndComp
$Comp
L SP3485EP U5
U 1 1 57DA9B3D
P 8050 5300
F 0 "U5" H 7850 5900 50  0000 C CNN
F 1 "SP3485EP" H 7800 5800 50  0000 C CNN
F 2 "DIP-8" H 7850 5700 50  0000 C CIN
F 3 "" H 8050 5300 50  0000 C CNN
        1    8050 5300
        -1   0    0    -1  
$EndComp
$Comp
L VDD #PWR26
U 1 1 57DA9B4B
P 8050 4250
F 0 "#PWR26" H 8050 4100 50  0001 C CNN
F 1 "VDD" H 8050 4400 50  0000 C CNN
F 2 "" H 8050 4250 60  0000 C CNN
F 3 "" H 8050 4250 60  0000 C CNN
        1    8050 4250
        1    0    0    -1  
$EndComp
$Comp
L GND #PWR27
U 1 1 57DA9B53
P 8050 5750
F 0 "#PWR27" H 8050 5500 50  0001 C CNN
F 1 "GND" H 8050 5600 50  0000 C CNN
F 2 "" H 8050 5750 60  0000 C CNN
F 3 "" H 8050 5750 60  0000 C CNN
        1    8050 5750
        1    0    0    -1  
$EndComp
$Comp
L C C6
U 1 1 57DA9B5B
P 5600 4550
F 0 "C6" H 5625 4650 50  0000 L CNN
F 1 "100nF" H 5625 4450 50  0000 L CNN
F 2 "Mlab_R:SMD-0805" H 5638 4400 30  0001 C CNN
F 3 "" H 5600 4550 60  0000 C CNN
        1    5600 4550
        1    0    0    -1  
$EndComp
$Comp
L GND #PWR20
U 1 1 57DA9B61
P 5600 4700
F 0 "#PWR20" H 5600 4450 50  0001 C CNN
F 1 "GND" H 5600 4550 50  0000 C CNN
F 2 "" H 5600 4700 60  0000 C CNN
F 3 "" H 5600 4700 60  0000 C CNN
        1    5600 4700
        1    0    0    -1  
$EndComp
$Comp
L R R5
U 1 1 57DA9B67
P 5100 5300
F 0 "R5" V 5180 5300 50  0000 C CNN
F 1 "120" V 5100 5300 50  0000 C CNN
F 2 "Mlab_R:SMD-0805" V 5030 5300 30  0001 C CNN
F 3 "" H 5100 5300 30  0000 C CNN
        1    5100 5300
        1    0    0    -1  
$EndComp
$Comp
L SP3485EP U4
U 1 1 57DA9B6E
P 5950 5300
F 0 "U4" H 5750 5900 50  0000 C CNN
F 1 "SP3485EP" H 5700 5800 50  0000 C CNN
F 2 "DIP-8" H 5750 5700 50  0000 C CIN
F 3 "" H 5950 5300 50  0000 C CNN
        1    5950 5300
        -1   0    0    -1  
$EndComp
$Comp
L VDD #PWR21
U 1 1 57DA9B7C
P 5950 4250
F 0 "#PWR21" H 5950 4100 50  0001 C CNN
F 1 "VDD" H 5950 4400 50  0000 C CNN
F 2 "" H 5950 4250 60  0000 C CNN
F 3 "" H 5950 4250 60  0000 C CNN
        1    5950 4250
        1    0    0    -1  
$EndComp
$Comp
L GND #PWR22
U 1 1 57DA9B84
P 5950 5750
F 0 "#PWR22" H 5950 5500 50  0001 C CNN
F 1 "GND" H 5950 5600 50  0000 C CNN
F 2 "" H 5950 5750 60  0000 C CNN
F 3 "" H 5950 5750 60  0000 C CNN
        1    5950 5750
        1    0    0    -1  
$EndComp
Text Label 3950 2250 0    60   ~ 0
MISO+
Text Label 3950 2650 0    60   ~ 0
MISO-
Text Label 7200 5100 0    60   ~ 0
MOSI+
Text Label 7200 5500 0    60   ~ 0
MOSI-
Text Label 3150 5100 0    60   ~ 0
CS+
Text Label 3150 5500 0    60   ~ 0
CS-
Text Label 5100 5100 0    60   ~ 0
SCLK+
Text Label 5100 5500 0    60   ~ 0
SCLK-
$Comp
L VDD #PWR23
U 1 1 57DAB651
P 6400 2150
F 0 "#PWR23" H 6400 2000 50  0001 C CNN
F 1 "VDD" H 6400 2300 50  0000 C CNN
F 2 "" H 6400 2150 60  0000 C CNN
F 3 "" H 6400 2150 60  0000 C CNN
        1    6400 2150
        -1   0    0    -1  
$EndComp
$Comp
L GND #PWR24
U 1 1 57DAB6E0
P 6400 2550
F 0 "#PWR24" H 6400 2300 50  0001 C CNN
F 1 "GND" H 6400 2400 50  0000 C CNN
F 2 "" H 6400 2550 60  0000 C CNN
F 3 "" H 6400 2550 60  0000 C CNN
        1    6400 2550
        -1   0    0    -1  
$EndComp
$Comp
L CONN_3 J11
U 1 1 57DABA91
P 9050 3450
F 0 "J11" H 9050 3450 50  0000 C CNN
F 1 "Slave/Master" H 9200 3350 40  0000 C CNN
F 2 "Mlab_Pin_Headers:Straight_1x03" H 9050 3450 60  0001 C CNN
F 3 "" H 9050 3450 60  0000 C CNN
        1    9050 3450
        1    0    0    1   
$EndComp
$Comp
L VDD #PWR28
U 1 1 57DABA97
P 8550 3250
F 0 "#PWR28" H 8550 3100 50  0001 C CNN
F 1 "VDD" H 8550 3400 50  0000 C CNN
F 2 "" H 8550 3250 60  0000 C CNN
F 3 "" H 8550 3250 60  0000 C CNN
        1    8550 3250
        -1   0    0    -1  
$EndComp
$Comp
L GND #PWR29
U 1 1 57DABA9D
P 8550 3650
F 0 "#PWR29" H 8550 3400 50  0001 C CNN
F 1 "GND" H 8550 3500 50  0000 C CNN
F 2 "" H 8550 3650 60  0000 C CNN
F 3 "" H 8550 3650 60  0000 C CNN
        1    8550 3650
        -1   0    0    -1  
$EndComp
Wire Wire Line
        4450 1550 4450 1500
Wire Wire Line
        9800 4200 9700 4200
Wire Wire Line
        9500 4000 9800 4000
Wire Wire Line
        1550 6750 2000 6750
Wire Wire Line
        1950 6450 1950 6850
Connection ~ 1950 6750
Wire Wire Line
        1950 7200 1950 7150
Wire Wire Line
        2400 7200 2400 7150
Connection ~ 2950 6750
Wire Wire Line
        2950 7150 2950 7200
Wire Wire Line
        3350 6550 3350 6850
Connection ~ 3350 6750
Wire Wire Line
        3350 7200 3350 7150
Wire Wire Line
        1550 7200 1550 7150
Wire Wire Line
        1150 6450 1950 6450
Wire Wire Line
        1200 6600 1200 6350
Wire Wire Line
        1200 6350 1150 6350
Wire Wire Line
        1150 6550 1200 6550
Connection ~ 1200 6550
Wire Wire Line
        1950 2000 1950 2100
Wire Wire Line
        1950 2300 1650 2300
Wire Wire Line
        1650 2300 1650 2000
Wire Wire Line
        1650 1700 1650 1650
Wire Wire Line
        1950 1700 1950 1650
Wire Wire Line
        1200 2200 1950 2200
Wire Wire Line
        3050 2100 3450 2100
Wire Wire Line
        2250 2900 2250 3700
Wire Wire Line
        2450 2900 2450 3300
Wire Wire Line
        2550 2900 2550 3200
Wire Wire Line
        2750 2900 2750 3100
Wire Wire Line
        2650 2900 2650 3450
Wire Wire Line
        2350 2900 2350 3550
Wire Wire Line
        2850 3000 3200 3000
Wire Wire Line
        2150 2900 2150 3800
Wire Wire Line
        2350 3550 3200 3550
Wire Wire Line
        10000 5350 10100 5350
Wire Wire Line
        10100 5350 10100 5450
Wire Wire Line
        10450 5350 10550 5350
Wire Wire Line
        10550 5350 10550 5450
Wire Wire Line
        10000 5750 10100 5750
Wire Wire Line
        10100 5750 10100 5900
Wire Wire Line
        10450 5750 10550 5750
Wire Wire Line
        10550 5750 10550 5900
Wire Wire Line
        2600 5200 2600 5150
Wire Wire Line
        1800 5200 1800 5150
Wire Wire Line
        2250 3700 3200 3700
Wire Wire Line
        2150 3800 3200 3800
Wire Wire Line
        2650 3450 3200 3450
Wire Wire Line
        2750 3100 3200 3100
Wire Wire Line
        2850 3000 2850 2900
Wire Wire Line
        3450 2100 3450 2140
Wire Wire Line
        3230 2140 3230 2100
Connection ~ 3230 2100
Wire Wire Line
        3450 2440 3450 2510
Wire Wire Line
        3230 2440 3230 2500
Wire Wire Line
        2550 3200 3200 3200
Wire Wire Line
        2450 3300 3200 3300
Wire Wire Line
        2800 6750 3350 6750
Wire Wire Line
        2950 6750 2950 6850
Wire Wire Line
        4400 2550 4200 2550
Wire Wire Line
        4200 2550 4200 2650
Wire Wire Line
        4200 2650 3950 2650
Wire Wire Line
        3950 2650 3950 2600
Wire Wire Line
        3950 2300 3950 2250
Wire Wire Line
        3950 2250 4200 2250
Wire Wire Line
        4200 2250 4200 2350
Wire Wire Line
        4200 2350 4400 2350
Wire Wire Line
        4450 1500 4800 1500
Connection ~ 4800 1500
Wire Wire Line
        4800 2900 4800 2850
Wire Wire Line
        9700 4200 9700 4250
Wire Wire Line
        9500 4100 9800 4100
Wire Wire Line
        9800 3900 9500 3900
Wire Wire Line
        9800 3800 9500 3800
Wire Wire Line
        4800 1350 4800 2050
Wire Wire Line
        3650 4400 3650 4350
Wire Wire Line
        3600 5400 3400 5400
Wire Wire Line
        3400 5400 3400 5500
Wire Wire Line
        3400 5500 3150 5500
Wire Wire Line
        3150 5500 3150 5450
Wire Wire Line
        3150 5150 3150 5100
Wire Wire Line
        3150 5100 3400 5100
Wire Wire Line
        3400 5100 3400 5200
Wire Wire Line
        3400 5200 3600 5200
Wire Wire Line
        3650 4350 4000 4350
Connection ~ 4000 4350
Wire Wire Line
        4000 5750 4000 5700
Wire Wire Line
        4000 4250 4000 4900
Wire Wire Line
        7700 4400 7700 4350
Wire Wire Line
        7650 5400 7450 5400
Wire Wire Line
        7450 5400 7450 5500
Wire Wire Line
        7450 5500 7200 5500
Wire Wire Line
        7200 5500 7200 5450
Wire Wire Line
        7200 5150 7200 5100
Wire Wire Line
        7200 5100 7450 5100
Wire Wire Line
        7450 5100 7450 5200
Wire Wire Line
        7450 5200 7650 5200
Wire Wire Line
        7700 4350 8050 4350
Connection ~ 8050 4350
Wire Wire Line
        8050 5750 8050 5700
Wire Wire Line
        8050 4250 8050 4900
Wire Wire Line
        5600 4400 5600 4350
Wire Wire Line
        5550 5400 5350 5400
Wire Wire Line
        5350 5400 5350 5500
Wire Wire Line
        5350 5500 5100 5500
Wire Wire Line
        5100 5500 5100 5450
Wire Wire Line
        5100 5150 5100 5100
Wire Wire Line
        5100 5100 5350 5100
Wire Wire Line
        5350 5100 5350 5200
Wire Wire Line
        5350 5200 5550 5200
Wire Wire Line
        5600 4350 5950 4350
Connection ~ 5950 4350
Wire Wire Line
        5950 5750 5950 5700
Wire Wire Line
        5950 4250 5950 4900
Wire Wire Line
        5200 2250 5550 2250
Wire Wire Line
        5550 2250 5550 2650
Wire Wire Line
        5550 2650 5200 2650
Wire Wire Line
        4400 5100 4750 5100
Wire Wire Line
        4750 5100 4750 5500
Wire Wire Line
        4750 5500 4400 5500
Wire Wire Line
        6350 5100 6750 5100
Wire Wire Line
        6750 5100 6750 5500
Wire Wire Line
        6750 5500 6350 5500
Wire Wire Line
        8450 5100 8850 5100
Wire Wire Line
        8850 5100 8850 5500
Wire Wire Line
        8850 5500 8450 5500
Wire Wire Line
        5200 2550 5350 2550
Wire Wire Line
        5350 2550 5350 2350
Wire Wire Line
        5200 2350 6550 2350
Wire Wire Line
        4400 5200 4550 5200
Wire Wire Line
        4550 3450 4550 5400
Wire Wire Line
        4550 5400 4400 5400
Wire Wire Line
        6350 5200 6500 5200
Wire Wire Line
        6500 3450 6500 5400
Wire Wire Line
        6500 5400 6350 5400
Wire Wire Line
        8450 5200 8650 5200
Wire Wire Line
        8650 3450 8650 5400
Wire Wire Line
        8650 5400 8450 5400
Wire Wire Line
        6550 2450 6400 2450
Wire Wire Line
        6400 2450 6400 2550
Wire Wire Line
        6550 2250 6400 2250
Wire Wire Line
        6400 2250 6400 2150
Wire Wire Line
        8700 3550 8550 3550
Wire Wire Line
        8550 3550 8550 3650
Wire Wire Line
        8700 3350 8550 3350
Wire Wire Line
        8550 3350 8550 3250
Connection ~ 5350 2350
Wire Wire Line
        4550 3450 8700 3450
Connection ~ 8650 5200
Connection ~ 6500 5200
Connection ~ 8650 3450
Connection ~ 4550 5200
Connection ~ 6500 3450
Text Label 4650 5100 0    60   ~ 0
CS
Text Label 8750 5100 0    60   ~ 0
MOSI
Text Label 6600 5100 0    60   ~ 0
SCLK
Text Label 1650 1650 1    60   ~ 0
MASTER_A
Text Label 1200 2200 0    60   ~ 0
SLAVE_K
$Comp
L GND #PWR3
U 1 1 57DAD912
P 1650 2450
F 0 "#PWR3" H 1650 2200 50  0001 C CNN
F 1 "GND" H 1650 2300 50  0000 C CNN
F 2 "" H 1650 2450 60  0000 C CNN
F 3 "" H 1650 2450 60  0000 C CNN
        1    1650 2450
        1    0    0    -1  
$EndComp
Wire Wire Line
        1950 2400 1650 2400
Wire Wire Line
        1650 2400 1650 2450
$Comp
L VDD #PWR18
U 1 1 57DADEE5
P 4800 1350
F 0 "#PWR18" H 4800 1200 50  0001 C CNN
F 1 "VDD" H 4800 1500 50  0000 C CNN
F 2 "" H 4800 1350 60  0000 C CNN
F 3 "" H 4800 1350 60  0000 C CNN
        1    4800 1350
        1    0    0    -1  
$EndComp
Text Label 6500 3450 0    60   ~ 0
SLAVE_K
Text Label 5700 2350 0    60   ~ 0
MASTER_A
$EndSCHEMATC