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EESchema Schematic File Version 2
LIBS:power
LIBS:device
LIBS:transistors
LIBS:conn
LIBS:linear
LIBS:regul
LIBS:74xx
LIBS:cmos4000
LIBS:adc-dac
LIBS:memory
LIBS:xilinx
LIBS:microcontrollers
LIBS:dsp
LIBS:microchip
LIBS:analog_switches
LIBS:motorola
LIBS:texas
LIBS:intel
LIBS:audio
LIBS:interface
LIBS:digital-audio
LIBS:philips
LIBS:display
LIBS:cypress
LIBS:siliconi
LIBS:opto
LIBS:atmel
LIBS:contrib
LIBS:valves
LIBS:dr-audio
LIBS:stm32
LIBS:dr-power
LIBS:dr-usb
LIBS:dr-mechanical
LIBS:dr-logic
LIBS:samdac-cache
EELAYER 25 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 5
Title "Chromecast/Other DAC interface board - Top Level"
Date "2016-02-07"
Rev "1"
Comp "Digital-Scurf unlimited"
Comment1 "CC-BY-NC-SA 4.0"
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Sheet
S 1250 1550 1450 600 
U 56B74EB3
F0 "Power, USB, Mechanicals" 60
F1 "power.sch" 60
$EndSheet
$Sheet
S 1250 2550 1450 1450
U 56B78CC7
F0 "Audio Input" 60
F1 "audio_in.sch" 60
F2 "SCL" B L 1250 2800 60 
F3 "SDA" B L 1250 2650 60 
F4 "~INT" O R 2700 2900 60 
F5 "~RST" I R 2700 3000 60 
F6 "~RDY" O R 2700 3100 60 
F7 "MUTE" I R 2700 3200 60 
F8 "~LOCK" O R 2700 3300 60 
F9 "BCK" O R 2700 3600 60 
F10 "LRCK" O R 2700 3700 60 
F11 "SDAT" O R 2700 3800 60 
$EndSheet
$Sheet
S 1250 4200 1450 1250
U 56B78CCA
F0 "Audio Output" 60
F1 "audio_out.sch" 60
F2 "LRCK" I R 2700 4500 60 
F3 "SDAT" I R 2700 4400 60 
F4 "BCK" I R 2700 4600 60 
F5 "XSMT" I R 2700 4900 60 
$EndSheet
$Sheet
S 1250 5850 1450 1200
U 56B78CCD
F0 "Control and display" 60
F1 "microcontroller.sch" 60
F2 "SCL" B L 1250 6000 60 
F3 "SDA" B L 1250 6150 60 
F4 "~SRCINT" I R 2700 6900 60 
F5 "~SRCRST" O R 2700 6800 60 
F6 "~SRCRDY" I R 2700 6700 60 
F7 "SRCMUTE" O R 2700 6600 60 
F8 "~SRCLOCK" I R 2700 6500 60 
F9 "DACMUTE" O R 2700 7000 60 
$EndSheet
Wire Wire Line
	2700 3800 2850 3800
Wire Wire Line
	2850 4400 2700 4400
Wire Wire Line
	2700 4500 3150 4500
Wire Wire Line
	2700 3700 3150 3700
Wire Wire Line
	2700 3600 3450 3600
Wire Wire Line
	2700 4600 3450 4600
$Comp
L R R8
U 1 1 56C8A5D2
P 2850 4100
F 0 "R8" H 2920 4146 50  0000 L CNN
F 1 "22R" H 2920 4054 50  0000 L CNN
F 2 "Resistors_SMD:R_0805" V 2780 4100 50  0001 C CNN
F 3 "" H 2850 4100 50  0000 C CNN
	1    2850 4100
	1    0    0    -1  
$EndComp
$Comp
L R R9
U 1 1 56C8A723
P 3150 4100
F 0 "R9" H 3220 4146 50  0000 L CNN
F 1 "22R" H 3220 4054 50  0000 L CNN
F 2 "Resistors_SMD:R_0805" V 3080 4100 50  0001 C CNN
F 3 "" H 3150 4100 50  0000 C CNN
	1    3150 4100
	1    0    0    -1  
$EndComp
$Comp
L R R10
U 1 1 56C8A791
P 3450 4100
F 0 "R10" H 3520 4146 50  0000 L CNN
F 1 "22R" H 3520 4054 50  0000 L CNN
F 2 "Resistors_SMD:R_0805" V 3380 4100 50  0001 C CNN
F 3 "" H 3450 4100 50  0000 C CNN
	1    3450 4100
	1    0    0    -1  
$EndComp
Wire Wire Line
	2850 4400 2850 4250
Wire Wire Line
	2850 3800 2850 3950
Wire Wire Line
	3150 3700 3150 3950
Wire Wire Line
	3150 4500 3150 4250
Wire Wire Line
	3450 4600 3450 4250
Wire Wire Line
	3450 3600 3450 3950
Wire Wire Line
	2700 6900 4500 6900
Wire Wire Line
	2700 6800 4150 6800
Wire Wire Line
	3800 6700 2700 6700
Wire Wire Line
	3450 6600 2700 6600
Wire Wire Line
	3100 6500 2700 6500
Text Label 4850 6100 0    60   ~ 0
~SRCLOCK
Text Label 4850 6200 0    60   ~ 0
SRCMUTE
Text Label 4850 6300 0    60   ~ 0
~SRCRDY
Text Label 4850 6400 0    60   ~ 0
~SRCRST
Text Label 4850 6500 0    60   ~ 0
~SRCINT
Wire Wire Line
	2700 3300 3050 3300
Wire Wire Line
	2700 3200 3050 3200
Wire Wire Line
	3050 3100 2700 3100
Wire Wire Line
	3050 3000 2700 3000
Wire Wire Line
	3050 2900 2700 2900
Text Label 2750 3300 0    60   ~ 0
~SRCLOCK
Text Label 2750 3200 0    60   ~ 0
SRCMUTE
Text Label 2750 3100 0    60   ~ 0
~SRCRDY
Text Label 2750 3000 0    60   ~ 0
~SRCRST
Text Label 2750 2900 0    60   ~ 0
~SRCINT
$Comp
L R R17
U 1 1 56CABC04
P 3250 6500
F 0 "R17" V 3042 6500 50  0000 C CNN
F 1 "22R" V 3134 6500 50  0000 C CNN
F 2 "Resistors_SMD:R_0805" V 3180 6500 50  0001 C CNN
F 3 "" H 3250 6500 50  0000 C CNN
	1    3250 6500
	0    1    1    0   
$EndComp
$Comp
L R R18
U 1 1 56CABE8E
P 3600 6600
F 0 "R18" V 3392 6600 50  0000 C CNN
F 1 "22R" V 3484 6600 50  0000 C CNN
F 2 "Resistors_SMD:R_0805" V 3530 6600 50  0001 C CNN
F 3 "" H 3600 6600 50  0000 C CNN
	1    3600 6600
	0    1    1    0   
$EndComp
$Comp
L R R19
U 1 1 56CABFBA
P 3950 6700
F 0 "R19" V 3742 6700 50  0000 C CNN
F 1 "22R" V 3834 6700 50  0000 C CNN
F 2 "Resistors_SMD:R_0805" V 3880 6700 50  0001 C CNN
F 3 "" H 3950 6700 50  0000 C CNN
	1    3950 6700
	0    1    1    0   
$EndComp
$Comp
L R R20
U 1 1 56CAC138
P 4300 6800
F 0 "R20" V 4092 6800 50  0000 C CNN
F 1 "22R" V 4184 6800 50  0000 C CNN
F 2 "Resistors_SMD:R_0805" V 4230 6800 50  0001 C CNN
F 3 "" H 4300 6800 50  0000 C CNN
	1    4300 6800
	0    1    1    0   
$EndComp
$Comp
L R R21
U 1 1 56CAC1E1
P 4650 6900
F 0 "R21" V 4442 6900 50  0000 C CNN
F 1 "22R" V 4534 6900 50  0000 C CNN
F 2 "Resistors_SMD:R_0805" V 4580 6900 50  0001 C CNN
F 3 "" H 4650 6900 50  0000 C CNN
	1    4650 6900
	0    1    1    0   
$EndComp
Wire Wire Line
	3400 6500 3400 6100
Wire Wire Line
	3400 6100 5300 6100
Wire Wire Line
	3750 6600 3750 6200
Wire Wire Line
	3750 6200 5300 6200
Wire Wire Line
	4100 6700 4100 6300
Wire Wire Line
	4100 6300 5300 6300
Wire Wire Line
	4450 6800 4450 6400
Wire Wire Line
	4450 6400 5300 6400
Wire Wire Line
	4800 6900 4800 6500
Wire Wire Line
	4800 6500 5300 6500
Wire Wire Line
	2700 7000 4850 7000
$Comp
L R R24
U 1 1 56CB2266
P 5000 7000
F 0 "R24" V 4792 7000 50  0000 C CNN
F 1 "22R" V 4884 7000 50  0000 C CNN
F 2 "Resistors_SMD:R_0805" V 4930 7000 50  0001 C CNN
F 3 "" H 5000 7000 50  0000 C CNN
	1    5000 7000
	0    1    1    0   
$EndComp
Wire Wire Line
	5150 7000 5150 6600
Wire Wire Line
	5150 6600 5300 6600
Text Label 5200 6600 0    60   ~ 0
XSMT
Wire Wire Line
	2700 4900 3200 4900
Text Label 2800 4900 0    60   ~ 0
XSMT
Wire Wire Line
	1250 2800 1100 2800
Wire Wire Line
	1100 2800 1100 6000
Wire Wire Line
	1100 6000 1250 6000
Wire Wire Line
	1250 6150 1050 6150
Wire Wire Line
	1050 6150 1050 2650
Wire Wire Line
	1050 2650 1250 2650
Text Notes 4350 1950 0    60   ~ 0
The SamDAC schematic is divided into four major parts.\n\n1. Input power, USB power, and mechanicals\n2. Audio input and sample rate conversion\n3. Audio output\n4. Control and display
$EndSCHEMATC