diff --git a/libopenfpga/libpcf/src/io/read_csv_io_pin_table.cpp b/libopenfpga/libpcf/src/io/read_csv_io_pin_table.cpp
new file mode 100644
index 000000000..5911e8b1f
--- /dev/null
+++ b/libopenfpga/libpcf/src/io/read_csv_io_pin_table.cpp
@@ -0,0 +1,37 @@
+/********************************************************************
+ * This file includes the top-level function of this library
+ * which reads an XML of pin constraints to the associated
+ * data structures
+ *******************************************************************/
+#include <string>
+
+/* Headers from vtr util library */
+#include "vtr_assert.h"
+#include "vtr_time.h"
+
+/* Headers from libopenfpga util library */
+#include "openfpga_port_parser.h"
+
+#include "csv.hpp"
+
+#include "read_csv_io_pin_table.h"
+
+/* Begin namespace openfpga */
+namespace openfpga {
+
+/********************************************************************
+ * Parse XML codes about <pin_constraints> to an object of PinConstraints
+ *******************************************************************/
+IoPinTable read_csv_io_pin_table(const char* fname) {
+  vtr::ScopedStartFinishTimer timer("Read I/O Pin Table");
+
+  IoPinTable io_pin_table;
+
+
+  return io_pin_table;
+}
+
+} /* End namespace openfpga*/
+
+
+
diff --git a/libopenfpga/libpcf/src/io/read_csv_io_pin_table.h b/libopenfpga/libpcf/src/io/read_csv_io_pin_table.h
new file mode 100644
index 000000000..3da916b53
--- /dev/null
+++ b/libopenfpga/libpcf/src/io/read_csv_io_pin_table.h
@@ -0,0 +1,20 @@
+#ifndef READ_CSV_IO_PIN_TABLE_H
+#define READ_CSV_IO_PIN_TABLE_H
+
+/********************************************************************
+ * Include header files that are required by function declaration
+ *******************************************************************/
+#include <string>
+#include "io_pin_table.h"
+
+/********************************************************************
+ * Function declaration
+ *******************************************************************/
+/* Begin namespace openfpga */
+namespace openfpga {
+
+IoPinTable read_csv_io_pin_table(const char* fname);
+
+} /* End namespace openfpga*/
+
+#endif