diff --git a/top/fasec_ref_design/system_top.tcl b/top/fasec_ref_design/system_top.tcl
index 34ffd3c2412b5ea49892f67c1d033235155b3c84..ee7a5d564e704d98131558161d05f3731f66bcb5 100644
--- a/top/fasec_ref_design/system_top.tcl
+++ b/top/fasec_ref_design/system_top.tcl
@@ -370,171 +370,171 @@ CONFIG.PCW_MIO_15_IOTYPE {LVCMOS 3.3V} \
 CONFIG.PCW_MIO_15_PULLUP {enabled} \
 CONFIG.PCW_MIO_15_SLEW {slow} \
 CONFIG.PCW_MIO_16_DIRECTION {out} \
-CONFIG.PCW_MIO_16_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_16_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_16_PULLUP {disabled} \
 CONFIG.PCW_MIO_16_SLEW {fast} \
 CONFIG.PCW_MIO_17_DIRECTION {out} \
-CONFIG.PCW_MIO_17_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_17_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_17_PULLUP {disabled} \
 CONFIG.PCW_MIO_17_SLEW {fast} \
 CONFIG.PCW_MIO_18_DIRECTION {out} \
-CONFIG.PCW_MIO_18_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_18_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_18_PULLUP {disabled} \
 CONFIG.PCW_MIO_18_SLEW {fast} \
 CONFIG.PCW_MIO_19_DIRECTION {out} \
-CONFIG.PCW_MIO_19_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_19_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_19_PULLUP {disabled} \
 CONFIG.PCW_MIO_19_SLEW {fast} \
 CONFIG.PCW_MIO_1_DIRECTION {out} \
-CONFIG.PCW_MIO_1_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_1_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_1_PULLUP {enabled} \
 CONFIG.PCW_MIO_1_SLEW {slow} \
 CONFIG.PCW_MIO_20_DIRECTION {out} \
-CONFIG.PCW_MIO_20_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_20_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_20_PULLUP {disabled} \
 CONFIG.PCW_MIO_20_SLEW {fast} \
 CONFIG.PCW_MIO_21_DIRECTION {out} \
-CONFIG.PCW_MIO_21_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_21_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_21_PULLUP {disabled} \
 CONFIG.PCW_MIO_21_SLEW {fast} \
 CONFIG.PCW_MIO_22_DIRECTION {in} \
-CONFIG.PCW_MIO_22_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_22_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_22_PULLUP {disabled} \
 CONFIG.PCW_MIO_22_SLEW {fast} \
 CONFIG.PCW_MIO_23_DIRECTION {in} \
-CONFIG.PCW_MIO_23_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_23_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_23_PULLUP {disabled} \
 CONFIG.PCW_MIO_23_SLEW {fast} \
 CONFIG.PCW_MIO_24_DIRECTION {in} \
-CONFIG.PCW_MIO_24_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_24_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_24_PULLUP {disabled} \
 CONFIG.PCW_MIO_24_SLEW {fast} \
 CONFIG.PCW_MIO_25_DIRECTION {in} \
-CONFIG.PCW_MIO_25_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_25_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_25_PULLUP {disabled} \
 CONFIG.PCW_MIO_25_SLEW {fast} \
 CONFIG.PCW_MIO_26_DIRECTION {in} \
-CONFIG.PCW_MIO_26_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_26_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_26_PULLUP {disabled} \
 CONFIG.PCW_MIO_26_SLEW {fast} \
 CONFIG.PCW_MIO_27_DIRECTION {in} \
-CONFIG.PCW_MIO_27_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_27_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_27_PULLUP {disabled} \
 CONFIG.PCW_MIO_27_SLEW {fast} \
 CONFIG.PCW_MIO_28_DIRECTION {inout} \
-CONFIG.PCW_MIO_28_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_28_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_28_PULLUP {enabled} \
 CONFIG.PCW_MIO_28_SLEW {slow} \
 CONFIG.PCW_MIO_29_DIRECTION {inout} \
-CONFIG.PCW_MIO_29_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_29_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_29_PULLUP {enabled} \
 CONFIG.PCW_MIO_29_SLEW {slow} \
 CONFIG.PCW_MIO_2_DIRECTION {inout} \
-CONFIG.PCW_MIO_2_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_2_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_2_PULLUP {disabled} \
 CONFIG.PCW_MIO_2_SLEW {slow} \
 CONFIG.PCW_MIO_30_DIRECTION {inout} \
-CONFIG.PCW_MIO_30_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_30_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_30_PULLUP {enabled} \
 CONFIG.PCW_MIO_30_SLEW {slow} \
 CONFIG.PCW_MIO_31_DIRECTION {inout} \
-CONFIG.PCW_MIO_31_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_31_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_31_PULLUP {enabled} \
 CONFIG.PCW_MIO_31_SLEW {slow} \
 CONFIG.PCW_MIO_32_DIRECTION {inout} \
-CONFIG.PCW_MIO_32_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_32_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_32_PULLUP {enabled} \
 CONFIG.PCW_MIO_32_SLEW {slow} \
 CONFIG.PCW_MIO_33_DIRECTION {inout} \
-CONFIG.PCW_MIO_33_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_33_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_33_PULLUP {enabled} \
 CONFIG.PCW_MIO_33_SLEW {slow} \
 CONFIG.PCW_MIO_34_DIRECTION {inout} \
-CONFIG.PCW_MIO_34_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_34_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_34_PULLUP {enabled} \
 CONFIG.PCW_MIO_34_SLEW {slow} \
 CONFIG.PCW_MIO_35_DIRECTION {inout} \
-CONFIG.PCW_MIO_35_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_35_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_35_PULLUP {enabled} \
 CONFIG.PCW_MIO_35_SLEW {slow} \
 CONFIG.PCW_MIO_36_DIRECTION {inout} \
-CONFIG.PCW_MIO_36_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_36_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_36_PULLUP {enabled} \
 CONFIG.PCW_MIO_36_SLEW {slow} \
 CONFIG.PCW_MIO_37_DIRECTION {inout} \
-CONFIG.PCW_MIO_37_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_37_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_37_PULLUP {enabled} \
 CONFIG.PCW_MIO_37_SLEW {slow} \
 CONFIG.PCW_MIO_38_DIRECTION {inout} \
-CONFIG.PCW_MIO_38_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_38_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_38_PULLUP {enabled} \
 CONFIG.PCW_MIO_38_SLEW {slow} \
 CONFIG.PCW_MIO_39_DIRECTION {inout} \
-CONFIG.PCW_MIO_39_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_39_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_39_PULLUP {enabled} \
 CONFIG.PCW_MIO_39_SLEW {slow} \
 CONFIG.PCW_MIO_3_DIRECTION {inout} \
-CONFIG.PCW_MIO_3_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_3_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_3_PULLUP {disabled} \
 CONFIG.PCW_MIO_3_SLEW {slow} \
 CONFIG.PCW_MIO_40_DIRECTION {inout} \
-CONFIG.PCW_MIO_40_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_40_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_40_PULLUP {enabled} \
 CONFIG.PCW_MIO_40_SLEW {slow} \
 CONFIG.PCW_MIO_41_DIRECTION {inout} \
-CONFIG.PCW_MIO_41_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_41_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_41_PULLUP {enabled} \
 CONFIG.PCW_MIO_41_SLEW {slow} \
 CONFIG.PCW_MIO_42_DIRECTION {inout} \
-CONFIG.PCW_MIO_42_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_42_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_42_PULLUP {enabled} \
 CONFIG.PCW_MIO_42_SLEW {slow} \
 CONFIG.PCW_MIO_43_DIRECTION {inout} \
-CONFIG.PCW_MIO_43_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_43_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_43_PULLUP {enabled} \
 CONFIG.PCW_MIO_43_SLEW {slow} \
 CONFIG.PCW_MIO_44_DIRECTION {inout} \
-CONFIG.PCW_MIO_44_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_44_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_44_PULLUP {enabled} \
 CONFIG.PCW_MIO_44_SLEW {slow} \
 CONFIG.PCW_MIO_45_DIRECTION {inout} \
-CONFIG.PCW_MIO_45_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_45_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_45_PULLUP {enabled} \
 CONFIG.PCW_MIO_45_SLEW {slow} \
 CONFIG.PCW_MIO_46_DIRECTION {inout} \
-CONFIG.PCW_MIO_46_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_46_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_46_PULLUP {enabled} \
 CONFIG.PCW_MIO_46_SLEW {slow} \
 CONFIG.PCW_MIO_47_DIRECTION {inout} \
-CONFIG.PCW_MIO_47_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_47_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_47_PULLUP {enabled} \
 CONFIG.PCW_MIO_47_SLEW {slow} \
 CONFIG.PCW_MIO_48_DIRECTION {out} \
-CONFIG.PCW_MIO_48_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_48_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_48_PULLUP {enabled} \
 CONFIG.PCW_MIO_48_SLEW {slow} \
 CONFIG.PCW_MIO_49_DIRECTION {in} \
-CONFIG.PCW_MIO_49_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_49_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_49_PULLUP {enabled} \
 CONFIG.PCW_MIO_49_SLEW {slow} \
 CONFIG.PCW_MIO_4_DIRECTION {inout} \
-CONFIG.PCW_MIO_4_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_4_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_4_PULLUP {disabled} \
 CONFIG.PCW_MIO_4_SLEW {slow} \
 CONFIG.PCW_MIO_50_DIRECTION {inout} \
-CONFIG.PCW_MIO_50_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_50_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_50_PULLUP {enabled} \
 CONFIG.PCW_MIO_50_SLEW {slow} \
 CONFIG.PCW_MIO_51_DIRECTION {inout} \
-CONFIG.PCW_MIO_51_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_51_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_51_PULLUP {enabled} \
 CONFIG.PCW_MIO_51_SLEW {slow} \
 CONFIG.PCW_MIO_52_DIRECTION {out} \
-CONFIG.PCW_MIO_52_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_52_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_52_PULLUP {enabled} \
 CONFIG.PCW_MIO_52_SLEW {slow} \
 CONFIG.PCW_MIO_53_DIRECTION {inout} \
-CONFIG.PCW_MIO_53_IOTYPE {LVCMOS 3.3V} \
+CONFIG.PCW_MIO_53_IOTYPE {LVCMOS 1.8V} \
 CONFIG.PCW_MIO_53_PULLUP {enabled} \
 CONFIG.PCW_MIO_53_SLEW {slow} \
 CONFIG.PCW_MIO_5_DIRECTION {inout} \
@@ -629,7 +629,7 @@ CONFIG.PCW_PJTAG_PERIPHERAL_ENABLE {0} \
 CONFIG.PCW_PJTAG_PJTAG_IO {<Select>} \
 CONFIG.PCW_PLL_BYPASSMODE_ENABLE {0} \
 CONFIG.PCW_PRESET_BANK0_VOLTAGE {LVCMOS 3.3V} \
-CONFIG.PCW_PRESET_BANK1_VOLTAGE {LVCMOS 3.3V} \
+CONFIG.PCW_PRESET_BANK1_VOLTAGE {LVCMOS 1.8V} \
 CONFIG.PCW_QSPI_GRP_FBCLK_ENABLE {0} \
 CONFIG.PCW_QSPI_GRP_FBCLK_IO {<Select>} \
 CONFIG.PCW_QSPI_GRP_IO1_ENABLE {0} \