diff --git a/libnfc/chips/pn53x-internal.h b/libnfc/chips/pn53x-internal.h
index f7f06a2..388592a 100644
--- a/libnfc/chips/pn53x-internal.h
+++ b/libnfc/chips/pn53x-internal.h
@@ -25,8 +25,6 @@
 #ifndef __PN53X_INTERNAL_H__
 #define __PN53X_INTERNAL_H__
 
-#include "pn53x.h"
-
 // Miscellaneous
 #define Diagnose 0x00
 #define GetFirmwareVersion 0x02
@@ -118,11 +116,11 @@ typedef struct {
 #endif
 } pn53x_command;
 
-/*
-#define PN531 0x01
-#define PN532 0x02
-#define PN533 0X04
-*/
+typedef enum {
+  PN531 = 0x01,
+  PN532 = 0x02,
+  PN533 = 0x04
+} pn53x_type;
 
 #ifndef DEBUG
 #  define PNCMD( X, Y ) { X , Y }
diff --git a/libnfc/chips/pn53x.c b/libnfc/chips/pn53x.c
index 7563bdb..3d6c73f 100644
--- a/libnfc/chips/pn53x.c
+++ b/libnfc/chips/pn53x.c
@@ -67,12 +67,6 @@ pn53x_init(nfc_device_t * pnd)
     return false;
   }
 
-  // PN53x starts in initiator mode
-  CHIP_DATA (pnd)->operating_mode = INITIATOR;
-
-  // Set current target to NULL
-  CHIP_DATA (pnd)->current_target = NULL;
-
   // CRC handling is enabled by default
   pnd->bCrc = true;
   // Parity handling is enabled by default
@@ -500,8 +494,6 @@ pn53x_get_firmware_version (nfc_device_t * pnd, char abtFirmwareText[18])
   byte_t  abtFw[4];
   size_t  szFwLen = sizeof (abtFw);
   if (!pn53x_transceive (pnd, abtCmd, sizeof (abtCmd), abtFw, &szFwLen)) {
-    // Failed to get firmware revision??, whatever...let's disconnect and clean up and return err
-    // FIXME: Wtf?
     return false;
   }
   // Determine which version of chip it is: PN531 will return only 2 bytes, while others return 4 bytes and have the first to tell the version IC
@@ -2237,3 +2229,22 @@ pn53x_nm_to_ptt(const nfc_modulation_t nm)
   }
   return PTT_UNDEFINED;
 }
+
+void
+pn53x_data_new (nfc_device_t * pnd, const struct pn53x_io* io)
+{
+  pnd->chip_data = malloc(sizeof(struct pn53x_data));
+
+  // Keep I/O functions
+  CHIP_DATA (pnd)->io = io;
+
+  // Set power mode to normal, if your device starts in LowVBat (ie. PN532
+  // UART) the driver layer have to correctly set it.
+  CHIP_DATA (pnd)->power_mode = NORMAL;
+
+  // PN53x starts in initiator mode
+  CHIP_DATA (pnd)->operating_mode = INITIATOR;
+
+  // Set current target to NULL
+  CHIP_DATA (pnd)->current_target = NULL;
+}
diff --git a/libnfc/chips/pn53x.h b/libnfc/chips/pn53x.h
index 11458f5..54dd155 100644
--- a/libnfc/chips/pn53x.h
+++ b/libnfc/chips/pn53x.h
@@ -28,6 +28,7 @@
 #  define __NFC_CHIPS_PN53X_H__
 
 #  include <nfc/nfc-types.h>
+#  include "pn53x-internal.h"
 
 // TODO Remove double register address defines
 // Registers and symbols masks used to covers parts within a register
@@ -133,12 +134,6 @@
 #  define DEACKMISMATCH   0x0200/* Unexpected data */
 #  define DEISERRFRAME    0x0300/* Error frame */
 
-typedef enum {
-  PN531 = 0x01,
-  PN532 = 0x02,
-  PN533 = 0x04
-} pn53x_type;
-
 typedef enum {
   NORMAL,	// In that case, there is no power saved but the PN53x reacts as fast as possible on the host controller interface.
   POWERDOWN,	// Only on PN532, need to be wake up to process commands with a long preamble
@@ -312,6 +307,7 @@ bool    pn53x_target_receive_bytes (nfc_device_t * pnd, byte_t * pbtRx, size_t *
 bool    pn53x_target_send_bits (nfc_device_t * pnd, const byte_t * pbtTx, const size_t szTxBits,
                                 const byte_t * pbtTxPar);
 bool    pn53x_target_send_bytes (nfc_device_t * pnd, const byte_t * pbtTx, const size_t szTx);
+
 // Error handling functions
 const char *pn53x_strerror (const nfc_device_t * pnd);
 
@@ -345,4 +341,6 @@ bool    pn53x_check_ack_frame (nfc_device_t * pnd, const byte_t * pbtRxFrame, co
 bool    pn53x_check_error_frame (nfc_device_t * pnd, const byte_t * pbtRxFrame, const size_t szRxFrameLen);
 bool    pn53x_build_frame (byte_t * pbtFrame, size_t * pszFrame, const byte_t * pbtData, const size_t szData);
 
+void    pn53x_data_new (nfc_device_t * pnd, const struct pn53x_io* io);
+
 #endif // __NFC_CHIPS_PN53X_H__
diff --git a/libnfc/drivers/acr122.c b/libnfc/drivers/acr122.c
index 7151c84..4065d01 100644
--- a/libnfc/drivers/acr122.c
+++ b/libnfc/drivers/acr122.c
@@ -193,7 +193,9 @@ acr122_connect (const nfc_device_desc_t * pndd)
   char   *pcFirmware;
   nfc_device_t *pnd = nfc_device_new ();
   pnd->driver_data = malloc (sizeof (struct acr122_data));
-  pnd->chip_data = malloc (sizeof (struct pn53x_data));
+
+  // Alloc and init chip's data
+  pn53x_data_new (pnd, &acr122_io);
 
   SCARDCONTEXT *pscc;
 
@@ -220,8 +222,6 @@ acr122_connect (const nfc_device_desc_t * pndd)
     // Done, we found the reader we are looking for
     snprintf (pnd->acName, sizeof (pnd->acName), "%s / %s", pndd->acDevice, pcFirmware);
 
-    CHIP_DATA (pnd)->power_mode = NORMAL;
-    CHIP_DATA (pnd)->io = &acr122_io;
     // 50: empirical tuning on Touchatag
     // 46: empirical tuning on ACR122U
     CHIP_DATA (pnd)->timer_correction = 50;
diff --git a/libnfc/drivers/arygon.c b/libnfc/drivers/arygon.c
index 13b314d..9b6fb58 100644
--- a/libnfc/drivers/arygon.c
+++ b/libnfc/drivers/arygon.c
@@ -117,9 +117,9 @@ arygon_probe (nfc_device_desc_t pnddDevices[], size_t szDevices, size_t * pszDev
       pnd->driver = &arygon_driver;
       pnd->driver_data = malloc(sizeof(struct arygon_data));
       DRIVER_DATA (pnd)->port = sp;
-      pnd->chip_data = malloc(sizeof(struct pn53x_data));
-      CHIP_DATA (pnd)->power_mode = NORMAL;
-      CHIP_DATA (pnd)->io = &arygon_tama_io;
+
+      // Alloc and init chip's data
+      pn53x_data_new (pnd, &arygon_tama_io);
 
       bool res = arygon_reset_tama (pnd);
       nfc_device_free (pnd);
diff --git a/libnfc/drivers/pn532_uart.c b/libnfc/drivers/pn532_uart.c
index 591dada..0f99c17 100644
--- a/libnfc/drivers/pn532_uart.c
+++ b/libnfc/drivers/pn532_uart.c
@@ -98,10 +98,11 @@ pn532_uart_probe (nfc_device_desc_t pnddDevices[], size_t szDevices, size_t * ps
       pnd->driver = &pn532_uart_driver;
       pnd->driver_data = malloc(sizeof(struct pn532_uart_data));
       DRIVER_DATA (pnd)->port = sp;
-      pnd->chip_data = malloc(sizeof(struct pn53x_data));
-      CHIP_DATA (pnd)->type = PN532;
+
+      // Alloc and init chip's data
+      pn53x_data_new (pnd, &pn532_uart_io);
+      // This device starts in LowVBat power mode
       CHIP_DATA (pnd)->power_mode = LOWVBAT;
-      CHIP_DATA (pnd)->io = &pn532_uart_io;
 
       // Check communication using "Diagnose" command, with "Communication test" (0x00)
       bool res = pn53x_check_communication (pnd);
diff --git a/libnfc/drivers/pn53x_usb.c b/libnfc/drivers/pn53x_usb.c
index ec3576f..559b6ea 100644
--- a/libnfc/drivers/pn53x_usb.c
+++ b/libnfc/drivers/pn53x_usb.c
@@ -290,10 +290,9 @@ pn53x_usb_connect (const nfc_device_desc_t *pndd)
 
         pnd->driver_data = malloc(sizeof(struct pn53x_usb_data));
         *DRIVER_DATA (pnd) = data;
-        pnd->chip_data = malloc(sizeof(struct pn53x_data));
 
-        CHIP_DATA (pnd)->power_mode = NORMAL;
-        CHIP_DATA (pnd)->io = &pn53x_usb_io;
+        // Alloc and init chip's data
+        pn53x_data_new (pnd, &pn53x_usb_io);
 
         switch (DRIVER_DATA (pnd)->model) {
           // empirical tuning