diff --git a/hardware/.gitignore b/hardware/.gitignore
index 870b1c1..f7acb5c 100644
--- a/hardware/.gitignore
+++ b/hardware/.gitignore
@@ -4,5 +4,6 @@
 *.zip
 *.bck
 *.kicad_pcb-bak
+*.sch-bak
 Thumbs.db
 fp-info-cache
diff --git a/hardware/ecp5_mainboard/fpga_io.sch b/hardware/ecp5_mainboard/fpga_io.sch
index 8d71d67..ddb5b5d 100644
--- a/hardware/ecp5_mainboard/fpga_io.sch
+++ b/hardware/ecp5_mainboard/fpga_io.sch
@@ -1,6 +1,6 @@
 EESchema Schematic File Version 4
 LIBS:ecp5_mainboard-cache
-EELAYER 29 0
+EELAYER 30 0
 EELAYER END
 $Descr A2 23386 16535
 encoding utf-8
@@ -1307,33 +1307,17 @@ FABRIC_REFCLK
 Wire Wire Line
 	15050 6500 15400 6500
 $Comp
-L eco_glue:XL_XO_LVDS U26
-U 1 1 6249D25D
-P 20150 1400
-F 0 "U26" H 20150 1865 50  0000 C CNN
-F 1 "XL_XO_LVDS" H 20150 1774 50  0000 C CNN
-F 2 "Custom Parts:OSC_IDT_XU_5x3.2mm" H 20150 1400 50  0001 C CNN
-F 3 "" H 20150 1400 50  0001 C CNN
-	1    20150 1400
-	1    0    0    -1  
-$EndComp
-$Comp
 L power:GND #PWR0234
 U 1 1 6249D389
-P 19250 1750
-F 0 "#PWR0234" H 19250 1500 50  0001 C CNN
-F 1 "GND" H 19255 1577 50  0000 C CNN
-F 2 "" H 19250 1750 50  0001 C CNN
-F 3 "" H 19250 1750 50  0001 C CNN
-	1    19250 1750
+P 20850 1950
+F 0 "#PWR0234" H 20850 1700 50  0001 C CNN
+F 1 "GND" H 20855 1777 50  0000 C CNN
+F 2 "" H 20850 1950 50  0001 C CNN
+F 3 "" H 20850 1950 50  0001 C CNN
+	1    20850 1950
 	1    0    0    -1  
 $EndComp
-Wire Wire Line
-	19250 1750 19250 1600
-Wire Wire Line
-	19250 1600 19450 1600
-NoConn ~ 19450 1400
-NoConn ~ 19450 1200
+NoConn ~ 20450 1650
 $Comp
 L power:+3V3 #PWR0240
 U 1 1 624F33B1
@@ -1345,14 +1329,6 @@ F 3 "" H 22200 800 50  0001 C CNN
 	1    22200 800 
 	0    1    1    0   
 $EndComp
-Text Label 21800 1400 2    50   ~ 0
-CLK100-
-Wire Wire Line
-	21800 1400 20850 1400
-Text Label 21800 1600 2    50   ~ 0
-CLK100+
-Wire Wire Line
-	21800 1600 20850 1600
 Text GLabel 15050 4800 0    50   BiDi ~ 0
 CLK_SDA
 Text GLabel 15050 4900 0    50   BiDi ~ 0
@@ -4630,4 +4606,25 @@ NoConn ~ 12550 10600
 NoConn ~ 12550 10800
 NoConn ~ 12550 10900
 NoConn ~ 12550 11100
+$Comp
+L Oscillator:XUX53 U26
+U 1 1 5E0DB69A
+P 20850 1650
+F 0 "U26" H 20600 1900 50  0000 C CNN
+F 1 "XUL535100.000JS6I8 " H 21300 1900 50  0000 C CNN
+F 2 "Oscillator:Oscillator_SMD_IDT_JS6-6_5.0x3.2mm_P1.27mm" H 20900 1300 50  0001 C CNN
+F 3 "https://www.idt.com/document/dst/xu-family-datasheet" H 20450 2350 50  0001 C CNN
+	1    20850 1650
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	22200 1650 21250 1650
+Text Label 22200 1650 2    50   ~ 0
+CLK100+
+Wire Wire Line
+	22200 1750 21250 1750
+Text Label 22200 1750 2    50   ~ 0
+CLK100-
+Wire Wire Line
+	20850 1200 20850 1350
 $EndSCHEMATC