EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L logic-4000:4060-SO U1
U 1 1 61B16082
P 4775 3600
F 0 "U1" H 4775 4417 50  0000 C CNN
F 1 "74HC4060" H 4775 4326 50  0000 C CNN
F 2 "Package_SO:SOIC-16_3.9x9.9mm_P1.27mm" H 4775 3050 50  0001 C CNN
F 3 "https://www.onsemi.com/pub/Collateral/MC74HC4060A-D.PDF" H 4775 2950 60  0001 C CNN
	1    4775 3600
	1    0    0    -1  
$EndComp
$Comp
L Device:Crystal Y1
U 1 1 61B1EE6A
P 3175 3550
F 0 "Y1" V 3129 3681 50  0000 L CNN
F 1 "3.93216MHz" V 3220 3681 50  0000 L CNN
F 2 "Crystal:Crystal_HC49-U_Vertical" H 3175 3550 50  0001 C CNN
F 3 "~" H 3175 3550 50  0001 C CNN
	1    3175 3550
	0    1    1    0   
$EndComp
$Comp
L Device:R R1
U 1 1 61B21F0A
P 3875 3550
F 0 "R1" V 3875 3500 50  0000 L CNN
F 1 "10M" V 3950 3475 50  0000 L CNN
F 2 "Resistor_SMD:R_1206_3216Metric" V 3805 3550 50  0001 C CNN
F 3 "~" H 3875 3550 50  0001 C CNN
	1    3875 3550
	1    0    0    -1  
$EndComp
$Comp
L Device:C C1
U 1 1 61B28C68
P 2625 4000
F 0 "C1" H 2740 4046 50  0000 L CNN
F 1 "6.8pF" H 2740 3955 50  0000 L CNN
F 2 "Capacitor_SMD:C_1206_3216Metric" H 2663 3850 50  0001 C CNN
F 3 "~" H 2625 4000 50  0001 C CNN
	1    2625 4000
	1    0    0    -1  
$EndComp
Wire Wire Line
	3175 3400 3875 3400
Wire Wire Line
	3875 3700 3650 3700
Wire Wire Line
	4375 3650 4125 3650
Wire Wire Line
	4125 3650 4125 3700
Wire Wire Line
	4125 3700 3875 3700
Connection ~ 3875 3700
Wire Wire Line
	4375 3450 4125 3450
Wire Wire Line
	4125 3450 4125 3400
Wire Wire Line
	4125 3400 3875 3400
Connection ~ 3875 3400
Wire Wire Line
	4375 3850 4375 3950
Connection ~ 4375 3950
Wire Wire Line
	4375 3950 4375 4450
$Comp
L power:GND #PWR?
U 1 1 61B2A8B0
P 4375 4525
F 0 "#PWR?" H 4375 4275 50  0001 C CNN
F 1 "GND" H 4380 4352 50  0000 C CNN
F 2 "" H 4375 4525 50  0001 C CNN
F 3 "" H 4375 4525 50  0001 C CNN
	1    4375 4525
	1    0    0    -1  
$EndComp
$Comp
L Device:C C2
U 1 1 61B2F6DD
P 3175 4000
F 0 "C2" H 3290 4046 50  0000 L CNN
F 1 "6.8pF" H 3290 3955 50  0000 L CNN
F 2 "Capacitor_SMD:C_1206_3216Metric" H 3213 3850 50  0001 C CNN
F 3 "~" H 3175 4000 50  0001 C CNN
	1    3175 4000
	1    0    0    -1  
$EndComp
Wire Wire Line
	3175 3700 3175 3850
Connection ~ 3175 3700
Wire Wire Line
	3175 3400 2625 3400
Wire Wire Line
	2625 3400 2625 3850
Connection ~ 3175 3400
Wire Wire Line
	2625 4150 2625 4450
Wire Wire Line
	2625 4450 3175 4450
Connection ~ 4375 4450
Wire Wire Line
	4375 4450 4375 4525
Wire Wire Line
	3175 4150 3175 4450
Connection ~ 3175 4450
Wire Wire Line
	3175 4450 4375 4450
$Comp
L Device:C C3
U 1 1 61B32B51
P 4000 3050
F 0 "C3" V 3748 3050 50  0000 C CNN
F 1 "0.1uF" V 3839 3050 50  0000 C CNN
F 2 "Capacitor_SMD:C_1206_3216Metric" H 4038 2900 50  0001 C CNN
F 3 "~" H 4000 3050 50  0001 C CNN
	1    4000 3050
	0    1    1    0   
$EndComp
Wire Wire Line
	4150 3050 4250 3050
Wire Wire Line
	3850 3050 2200 3050
Wire Wire Line
	2200 3050 2200 4450
Wire Wire Line
	2200 4450 2625 4450
Connection ~ 2625 4450
Wire Wire Line
	4250 3050 4250 2575
Connection ~ 4250 3050
Wire Wire Line
	4250 3050 4375 3050
$Comp
L power:+5V #PWR?
U 1 1 61B35460
P 4250 2575
F 0 "#PWR?" H 4250 2425 50  0001 C CNN
F 1 "+5V" H 4265 2748 50  0000 C CNN
F 2 "" H 4250 2575 50  0001 C CNN
F 3 "" H 4250 2575 50  0001 C CNN
	1    4250 2575
	1    0    0    -1  
$EndComp
NoConn ~ 4375 3250
Wire Wire Line
	6000 3950 5175 3950
NoConn ~ 5175 3850
NoConn ~ 5175 3750
NoConn ~ 5175 3650
NoConn ~ 5175 3550
NoConn ~ 5175 3450
NoConn ~ 5175 3350
NoConn ~ 5175 3250
NoConn ~ 5175 3150
NoConn ~ 5175 3050
Wire Wire Line
	6300 4250 6300 4400
Wire Wire Line
	6300 4400 7025 4400
Wire Wire Line
	8800 4400 8800 3325
Wire Wire Line
	7325 4150 7325 4400
Connection ~ 7325 4400
Wire Wire Line
	7325 4400 8125 4400
$Comp
L power:+5V #PWR?
U 1 1 61B3EF7D
P 8800 3175
F 0 "#PWR?" H 8800 3025 50  0001 C CNN
F 1 "+5V" H 8815 3348 50  0000 C CNN
F 2 "" H 8800 3175 50  0001 C CNN
F 3 "" H 8800 3175 50  0001 C CNN
	1    8800 3175
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74LS73 U2
U 1 1 61B404AF
P 6300 3950
F 0 "U2" H 6300 4317 50  0000 C CNN
F 1 "74HC73" H 6300 4226 50  0000 C CNN
F 2 "Package_SO:SOIC-14_3.9x8.7mm_P1.27mm" H 6300 3950 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS73" H 6300 3950 50  0001 C CNN
	1    6300 3950
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74LS73 U2
U 2 1 61B40DB2
P 7325 3850
F 0 "U2" H 7325 4217 50  0000 C CNN
F 1 "74HC73" H 7325 4126 50  0000 C CNN
F 2 "Package_SO:SOIC-14_3.9x8.7mm_P1.27mm" H 7325 3850 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS73" H 7325 3850 50  0001 C CNN
	2    7325 3850
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74LS73 U2
U 3 1 61B41577
P 5250 6125
F 0 "U2" H 5480 6171 50  0000 L CNN
F 1 "74HC73" H 5480 6080 50  0000 L CNN
F 2 "Package_SO:SOIC-14_3.9x8.7mm_P1.27mm" H 5250 6125 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS73" H 5250 6125 50  0001 C CNN
	3    5250 6125
	1    0    0    -1  
$EndComp
Wire Wire Line
	7025 3850 6600 3850
Wire Wire Line
	6000 3850 6000 3325
Wire Wire Line
	6000 3325 7025 3325
Connection ~ 8800 3325
Wire Wire Line
	8800 3325 8800 3175
Wire Wire Line
	7025 3750 7025 3325
Connection ~ 7025 3325
Wire Wire Line
	7025 3325 8800 3325
Wire Wire Line
	6000 4050 6000 4400
Wire Wire Line
	6000 4400 6300 4400
Connection ~ 6300 4400
Wire Wire Line
	7025 3950 7025 4400
Connection ~ 7025 4400
Wire Wire Line
	7025 4400 7325 4400
NoConn ~ 7625 3950
NoConn ~ 6600 4050
$Comp
L Connector:Conn_01x06_Female CN1
U 1 1 61B4AFE1
P 8325 3850
F 0 "CN1" H 8353 3826 50  0000 L CNN
F 1 "To_Amiga" H 8353 3735 50  0000 L CNN
F 2 "Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical" H 8325 3850 50  0001 C CNN
F 3 "~" H 8325 3850 50  0001 C CNN
	1    8325 3850
	1    0    0    -1  
$EndComp
NoConn ~ 8125 3650
NoConn ~ 8125 4050
NoConn ~ 8125 3950
Wire Wire Line
	7625 3750 8125 3750
Wire Wire Line
	8125 4150 8125 4400
Connection ~ 8125 4400
Wire Wire Line
	8125 4400 8800 4400
Wire Wire Line
	8125 3850 7850 3850
Wire Wire Line
	7850 3850 7850 4150
$Comp
L power:GND #PWR?
U 1 1 61B50C73
P 7850 4150
F 0 "#PWR?" H 7850 3900 50  0001 C CNN
F 1 "GND" H 7855 3977 50  0000 C CNN
F 2 "" H 7850 4150 50  0001 C CNN
F 3 "" H 7850 4150 50  0001 C CNN
	1    7850 4150
	1    0    0    -1  
$EndComp
Text Label 8125 3750 2    50   ~ 0
TBASE
Wire Wire Line
	5250 5725 5250 5475
$Comp
L power:GND #PWR?
U 1 1 61B66D66
P 5250 6800
F 0 "#PWR?" H 5250 6550 50  0001 C CNN
F 1 "GND" H 5255 6627 50  0000 C CNN
F 2 "" H 5250 6800 50  0001 C CNN
F 3 "" H 5250 6800 50  0001 C CNN
	1    5250 6800
	1    0    0    -1  
$EndComp
$Comp
L Device:C C4
U 1 1 61B68C2F
P 4650 6125
F 0 "C4" H 4535 6079 50  0000 R CNN
F 1 "0.1uF" H 4535 6170 50  0000 R CNN
F 2 "Capacitor_SMD:C_1206_3216Metric" H 4688 5975 50  0001 C CNN
F 3 "~" H 4650 6125 50  0001 C CNN
	1    4650 6125
	-1   0    0    1   
$EndComp
Wire Wire Line
	5250 5475 4650 5475
Wire Wire Line
	4650 5475 4650 5975
Wire Wire Line
	5250 6525 5250 6800
Wire Wire Line
	4650 6275 4650 6800
Wire Wire Line
	4650 6800 5250 6800
Connection ~ 5250 6800
$Comp
L power:+5V #PWR?
U 1 1 61B6BE9F
P 5250 5475
F 0 "#PWR?" H 5250 5325 50  0001 C CNN
F 1 "+5V" H 5265 5648 50  0000 C CNN
F 2 "" H 5250 5475 50  0001 C CNN
F 3 "" H 5250 5475 50  0001 C CNN
	1    5250 5475
	1    0    0    -1  
$EndComp
Connection ~ 5250 5475
$Comp
L Device:R R2
U 1 1 61B73AC2
P 3500 3700
F 0 "R2" V 3500 3700 50  0000 C CNN
F 1 "100k" V 3575 3700 50  0000 C CNN
F 2 "Resistor_SMD:R_1206_3216Metric" V 3430 3700 50  0001 C CNN
F 3 "~" H 3500 3700 50  0001 C CNN
	1    3500 3700
	0    1    1    0   
$EndComp
Wire Wire Line
	3350 3700 3175 3700
Text Notes 1925 5275 0    79   ~ 0
Y1 =\n3.2768 MHz for PAL 50Hz TICK\n3.93216MHz for NTSC 60Hz TICK
$EndSCHEMATC