diff --git a/src/portable/renesas/link/dcd_link.c b/src/portable/renesas/link/dcd_link.c
index 19fbfe293..f2334140a 100644
--- a/src/portable/renesas/link/dcd_link.c
+++ b/src/portable/renesas/link/dcd_link.c
@@ -32,7 +32,7 @@
 #define USE_SOF     0
 
 #if CFG_TUD_ENABLED && (CFG_TUSB_MCU == OPT_MCU_RX63X || CFG_TUSB_MCU == OPT_MCU_RX65X || CFG_TUSB_MCU == OPT_MCU_RX72N || \
-			CFG_TUSB_MCU == OPT_MCU_RAXXX)
+      CFG_TUSB_MCU == OPT_MCU_RAXXX)
 
 #include "device/dcd.h"
 #include "link_type.h"
@@ -245,7 +245,7 @@ static bool pipe0_xfer_in(void)
     }
   }
   if (len < mps)
-    LINK_REG->CFIFOCTR = USB_FIFOCTR_BVAL;
+    LINK_REG->CFIFOCTR = LINK_REG_CFIFOCTR_BVAL_Msk;
   pipe->remaining = rem - len;
   return false;
 }
@@ -268,7 +268,7 @@ static bool pipe0_xfer_out(void)
     }
   }
   if (len < mps)
-    LINK_REG->CFIFOCTR = USB_FIFOCTR_BCLR;
+    LINK_REG->CFIFOCTR = LINK_REG_CFIFOCTR_BCLR_Msk;
   pipe->remaining = rem - len;
   if ((len < mps) || (rem == len)) {
     pipe->buf = NULL;
@@ -287,7 +287,7 @@ static bool pipe_xfer_in(unsigned num)
     return true;
   }
 
-  LINK_REG->D0FIFOSEL = num | USB_FIFOSEL_MBW_16 | (TU_BYTE_ORDER == TU_BIG_ENDIAN ? USB_FIFOSEL_BIGEND : 0);
+  LINK_REG->D0FIFOSEL = num | LINK_REG_FIFOSEL_MBW_16BIT | (TU_BYTE_ORDER == TU_BIG_ENDIAN ? LINK_REG_FIFOSEL_BIGEND : 0);
   const unsigned mps  = edpt_max_packet_size(num);
   pipe_wait_for_ready(num);
   const unsigned len  = TU_MIN(rem, mps);
@@ -301,7 +301,7 @@ static bool pipe_xfer_in(unsigned num)
     }
   }
   if (len < mps)
-    LINK_REG->D0FIFOCTR = USB_FIFOCTR_BVAL;
+    LINK_REG->D0FIFOCTR = LINK_REG_CFIFOCTR_BVAL_Msk;
   LINK_REG->D0FIFOSEL = 0;
   while (LINK_REG->D0FIFOSEL_b.CURPIPE) continue; /* if CURPIPE bits changes, check written value */
   pipe->remaining = rem - len;
@@ -313,7 +313,7 @@ static bool pipe_xfer_out(unsigned num)
   pipe_state_t  *pipe = &_dcd.pipe[num];
   const unsigned rem  = pipe->remaining;
 
-  LINK_REG->D0FIFOSEL = num | USB_FIFOSEL_MBW_8;
+  LINK_REG->D0FIFOSEL = num | LINK_REG_FIFOSEL_MBW_8BIT;
   const unsigned mps  = edpt_max_packet_size(num);
   pipe_wait_for_ready(num);
   const unsigned vld  = LINK_REG->D0FIFOCTR_b.DTLN;
@@ -328,7 +328,7 @@ static bool pipe_xfer_out(unsigned num)
     }
   }
   if (len < mps)
-    LINK_REG->D0FIFOCTR = USB_FIFOCTR_BCLR;
+    LINK_REG->D0FIFOCTR = LINK_REG_CFIFOCTR_BCLR_Msk;
   LINK_REG->D0FIFOSEL = 0;
   while (LINK_REG->D0FIFOSEL_b.CURPIPE) ; /* if CURPIPE bits changes, check written value */
   pipe->remaining = rem - len;
@@ -342,13 +342,13 @@ static bool pipe_xfer_out(unsigned num)
 static void process_setup_packet(uint8_t rhport)
 {
   uint16_t setup_packet[4];
-  if (0 == (LINK_REG->INTSTS0 & USB_IS0_VALID)) return;
-  LINK_REG->CFIFOCTR = USB_FIFOCTR_BCLR;
+  if (0 == (LINK_REG->INTSTS0 & LINK_REG_INTSTS0_VALID_Msk)) return;
+  LINK_REG->CFIFOCTR = LINK_REG_CFIFOCTR_BCLR_Msk;
   setup_packet[0] = tu_le16toh(LINK_REG->USBREQ);
   setup_packet[1] = LINK_REG->USBVAL;
   setup_packet[2] = LINK_REG->USBINDX;
   setup_packet[3] = LINK_REG->USBLENG;
-  LINK_REG->INTSTS0 = ~USB_IS0_VALID;
+  LINK_REG->INTSTS0 = ~((uint16_t)LINK_REG_INTSTS0_VALID_Msk);
   dcd_event_setup_received(rhport, (const uint8_t*)&setup_packet[0], true);
 }
 
@@ -356,7 +356,7 @@ static void process_status_completion(uint8_t rhport)
 {
   uint8_t ep_addr;
   /* Check the data stage direction */
-  if (LINK_REG->CFIFOSEL & USB_FIFOSEL_TX) {
+  if (LINK_REG->CFIFOSEL & LINK_REG_CFIFOSEL_ISEL_WRITE) {
     /* IN transfer. */
     ep_addr = tu_edpt_addr(0, TUSB_DIR_IN);
   } else {
@@ -370,12 +370,12 @@ static bool process_pipe0_xfer(int buffer_type, uint8_t ep_addr, void* buffer, u
 {
   /* configure fifo direction and access unit settings */
   if (ep_addr) { /* IN, 2 bytes */
-    LINK_REG->CFIFOSEL =
-      USB_FIFOSEL_TX | USB_FIFOSEL_MBW_16 | (TU_BYTE_ORDER == TU_BIG_ENDIAN ? USB_FIFOSEL_BIGEND : 0);
-    while (!(LINK_REG->CFIFOSEL & USB_FIFOSEL_TX)) ;
+    LINK_REG->CFIFOSEL = LINK_REG_CFIFOSEL_ISEL_WRITE | LINK_REG_FIFOSEL_MBW_16BIT |
+             (TU_BYTE_ORDER == TU_BIG_ENDIAN ? LINK_REG_FIFOSEL_BIGEND : 0);
+    while (!(LINK_REG->CFIFOSEL & LINK_REG_CFIFOSEL_ISEL_WRITE)) ;
   } else { /* OUT, a byte */
-    LINK_REG->CFIFOSEL = USB_FIFOSEL_MBW_8;
-    while (LINK_REG->CFIFOSEL & USB_FIFOSEL_TX) ;
+    LINK_REG->CFIFOSEL = LINK_REG_FIFOSEL_MBW_8BIT;
+    while (LINK_REG->CFIFOSEL & LINK_REG_CFIFOSEL_ISEL_WRITE) ;
   }
 
   pipe_state_t *pipe = &_dcd.pipe[0];
@@ -388,11 +388,11 @@ static bool process_pipe0_xfer(int buffer_type, uint8_t ep_addr, void* buffer, u
       TU_ASSERT(LINK_REG->DCPCTR_b.BSTS && (LINK_REG->USBREQ & 0x80));
       pipe0_xfer_in();
     }
-    LINK_REG->DCPCTR = USB_PIPECTR_PID_BUF;
+    LINK_REG->DCPCTR = LINK_REG_PIPE_CTR_PID_BUF;
   } else {
     /* ZLP */
     pipe->buf        = NULL;
-    LINK_REG->DCPCTR = USB_PIPECTR_CCPL | USB_PIPECTR_PID_BUF;
+    LINK_REG->DCPCTR = LINK_REG_DCPCTR_CCPL_Msk | LINK_REG_PIPE_CTR_PID_BUF;
   }
   return true;
 }
@@ -416,7 +416,7 @@ static bool process_pipe_xfer(int buffer_type, uint8_t ep_addr, void* buffer, ui
     } else { /* ZLP */
       LINK_REG->D0FIFOSEL = num;
       pipe_wait_for_ready(num);
-      LINK_REG->D0FIFOCTR = USB_FIFOCTR_BVAL;
+      LINK_REG->D0FIFOCTR = LINK_REG_CFIFOCTR_BVAL_Msk;
       LINK_REG->D0FIFOSEL = 0;
       while (LINK_REG->D0FIFOSEL_b.CURPIPE) ; /* if CURPIPE bits changes, check written value */
     }
@@ -429,11 +429,11 @@ static bool process_pipe_xfer(int buffer_type, uint8_t ep_addr, void* buffer, ui
     if (pt) {
       const unsigned     mps = edpt_max_packet_size(num);
       volatile uint16_t *ctr = get_pipectr(num);
-      if (*ctr & 0x3) *ctr = USB_PIPECTR_PID_NAK;
+      if (*ctr & 0x3) *ctr = LINK_REG_PIPE_CTR_PID_NAK;
       pt->TRE   = TU_BIT(8);
       pt->TRN   = (total_bytes + mps - 1) / mps;
       pt->TRENB = 1;
-      *ctr = USB_PIPECTR_PID_BUF;
+      *ctr = LINK_REG_PIPE_CTR_PID_BUF;
     }
   }
   //  TU_LOG1("X %x %d %d\r\n", ep_addr, total_bytes, buffer_type);
@@ -487,7 +487,7 @@ static void process_bus_reset(uint8_t rhport)
 {
   LINK_REG->BEMPENB = 1;
   LINK_REG->BRDYENB = 1;
-  LINK_REG->CFIFOCTR = USB_FIFOCTR_BCLR;
+  LINK_REG->CFIFOCTR = LINK_REG_CFIFOCTR_BCLR_Msk;
   LINK_REG->D0FIFOSEL = 0;
   while (LINK_REG->D0FIFOSEL_b.CURPIPE) ; /* if CURPIPE bits changes, check written value */
   LINK_REG->D1FIFOSEL = 0;
@@ -497,7 +497,7 @@ static void process_bus_reset(uint8_t rhport)
   for (int i = 1; i <= 5; ++i) {
     LINK_REG->PIPESEL = i;
     LINK_REG->PIPECFG = 0;
-    *ctr = USB_PIPECTR_ACLRM;
+    *ctr = LINK_REG_PIPE_CTR_ACLRM_Msk;
     *ctr = 0;
     ++ctr;
     *tre = TU_BIT(8);
@@ -506,7 +506,7 @@ static void process_bus_reset(uint8_t rhport)
   for (int i = 6; i <= 9; ++i) {
     LINK_REG->PIPESEL = i;
     LINK_REG->PIPECFG = 0;
-    *ctr = USB_PIPECTR_ACLRM;
+    *ctr = LINK_REG_PIPE_CTR_ACLRM_Msk;
     *ctr = 0;
     ++ctr;
   }
@@ -553,8 +553,9 @@ void dcd_init(uint8_t rhport)
 
   /* Setup default control pipe */
   LINK_REG->DCPMAXP_b.MXPS = 64;
-  LINK_REG->INTENB0 = USB_IS0_VBINT | USB_IS0_BRDY | USB_IS0_BEMP | USB_IS0_DVST | USB_IS0_CTRT |
-          (USE_SOF ? USB_IS0_SOFR : 0) | USB_IS0_RESM;
+  LINK_REG->INTENB0 = LINK_REG_INTSTS0_VBINT_Msk | LINK_REG_INTSTS0_BRDY_Msk | LINK_REG_INTSTS0_BEMP_Msk |
+          LINK_REG_INTSTS0_DVST_Msk | LINK_REG_INTSTS0_CTRT_Msk | (USE_SOF ? LINK_REG_INTSTS0_SOFR_Msk : 0) |
+          LINK_REG_INTSTS0_RESM_Msk;
   LINK_REG->BEMPENB = 1;
   LINK_REG->BRDYENB = 1;
 
@@ -633,21 +634,21 @@ bool dcd_edpt_open(uint8_t rhport, tusb_desc_endpoint_t const * ep_desc)
   LINK_REG->PIPESEL = num;
   LINK_REG->PIPEMAXP = mps;
   volatile uint16_t *ctr = get_pipectr(num);
-  *ctr = USB_PIPECTR_ACLRM | USB_PIPECTR_SQCLR;
+  *ctr = LINK_REG_PIPE_CTR_ACLRM_Msk | LINK_REG_PIPE_CTR_SQCLR_Msk;
   *ctr = 0;
   unsigned cfg = (dir << 4) | epn;
   if (xfer == TUSB_XFER_BULK) {
-    cfg |= (USB_PIPECFG_BULK | USB_PIPECFG_SHTNAK | USB_PIPECFG_DBLB);
+    cfg |= (LINK_REG_PIPECFG_TYPE_BULK | LINK_REG_PIPECFG_SHTNAK_Msk | LINK_REG_PIPECFG_DBLB_Msk);
   } else if (xfer == TUSB_XFER_INTERRUPT) {
-    cfg |= USB_PIPECFG_INT;
+    cfg |= LINK_REG_PIPECFG_TYPE_ISO;
   } else {
-    cfg |= (USB_PIPECFG_ISO | USB_PIPECFG_DBLB);
+    cfg |= (LINK_REG_PIPECFG_TYPE_INT | LINK_REG_PIPECFG_DBLB_Msk);
   }
   LINK_REG->PIPECFG = cfg;
   LINK_REG->BRDYSTS = 0x1FFu ^ TU_BIT(num);
   LINK_REG->BRDYENB |= TU_BIT(num);
   if (dir || (xfer != TUSB_XFER_BULK)) {
-    *ctr = USB_PIPECTR_PID_BUF;
+    *ctr = LINK_REG_PIPE_CTR_PID_BUF;
   }
   // TU_LOG1("O %d %x %x\r\n", LINK_REG->PIPESEL, LINK_REG->PIPECFG, LINK_REG->PIPEMAXP);
   dcd_int_enable(rhport);
@@ -709,8 +710,8 @@ void dcd_edpt_stall(uint8_t rhport, uint8_t ep_addr)
   if (!ctr) return;
   dcd_int_disable(rhport);
   const uint32_t pid = *ctr & 0x3;
-  *ctr = pid | USB_PIPECTR_PID_STALL;
-  *ctr = USB_PIPECTR_PID_STALL;
+  *ctr = pid | LINK_REG_PIPE_CTR_PID_STALL;
+  *ctr = LINK_REG_PIPE_CTR_PID_STALL;
   dcd_int_enable(rhport);
 }
 
@@ -719,15 +720,15 @@ void dcd_edpt_clear_stall(uint8_t rhport, uint8_t ep_addr)
   volatile uint16_t *ctr = ep_addr_to_pipectr(rhport, ep_addr);
   if (!ctr) return;
   dcd_int_disable(rhport);
-  *ctr = USB_PIPECTR_SQCLR;
+  *ctr = LINK_REG_PIPE_CTR_SQCLR_Msk;
 
   if (tu_edpt_dir(ep_addr)) { /* IN */
-    *ctr = USB_PIPECTR_PID_BUF;
+    *ctr = LINK_REG_PIPE_CTR_PID_BUF;
   } else {
     const unsigned num = _dcd.ep[0][tu_edpt_number(ep_addr)];
     LINK_REG->PIPESEL = num;
     if (LINK_REG->PIPECFG_b.TYPE != 1) {
-      *ctr = USB_PIPECTR_PID_BUF;
+      *ctr = LINK_REG_PIPE_CTR_PID_BUF;
     }
   }
   dcd_int_enable(rhport);
@@ -742,39 +743,40 @@ void dcd_int_handler(uint8_t rhport)
 
   unsigned is0 = LINK_REG->INTSTS0;
   /* clear active bits except VALID (don't write 0 to already cleared bits according to the HW manual) */
-  LINK_REG->INTSTS0 = ~((USB_IS0_CTRT | USB_IS0_DVST | USB_IS0_SOFR | USB_IS0_RESM | USB_IS0_VBINT) & is0) | USB_IS0_VALID;
-  if (is0 & USB_IS0_VBINT) {
+  LINK_REG->INTSTS0 = ~((LINK_REG_INTSTS0_CTRT_Msk | LINK_REG_INTSTS0_DVST_Msk | LINK_REG_INTSTS0_SOFR_Msk |
+                         LINK_REG_INTSTS0_RESM_Msk | LINK_REG_INTSTS0_VBINT_Msk) & is0) | LINK_REG_INTSTS0_VALID_Msk;
+  if (is0 & LINK_REG_INTSTS0_VBINT_Msk) {
     if (LINK_REG->INTSTS0_b.VBSTS) {
       dcd_connect(rhport);
     } else {
       dcd_disconnect(rhport);
     }
   }
-  if (is0 & USB_IS0_RESM) {
+  if (is0 & LINK_REG_INTSTS0_RESM_Msk) {
     dcd_event_bus_signal(rhport, DCD_EVENT_RESUME, true);
 #if (0==USE_SOF)
     LINK_REG->INTENB0_b.SOFE = 0;
 #endif
   }
-  if ((is0 & USB_IS0_SOFR) && LINK_REG->INTENB0_b.SOFE) {
+  if ((is0 & LINK_REG_INTSTS0_SOFR_Msk) && LINK_REG->INTENB0_b.SOFE) {
     // USBD will exit suspended mode when SOF event is received
     dcd_event_bus_signal(rhport, DCD_EVENT_SOF, true);
 #if (0 == USE_SOF)
     LINK_REG->INTENB0_b.SOFE = 0;
 #endif
   }
-  if (is0 & USB_IS0_DVST) {
-    switch (is0 & USB_IS0_DVSQ) {
-    case USB_IS0_DVSQ_DEF:
+  if (is0 & LINK_REG_INTSTS0_DVST_Msk) {
+    switch (is0 & LINK_REG_INTSTS0_DVSQ_Msk) {
+    case LINK_REG_INTSTS0_DVSQ_STATE_DEF:
       process_bus_reset(rhport);
       break;
-    case USB_IS0_DVSQ_ADDR:
+    case LINK_REG_INTSTS0_DVSQ_STATE_ADDR:
       process_set_address(rhport);
       break;
-    case USB_IS0_DVSQ_SUSP0:
-    case USB_IS0_DVSQ_SUSP1:
-    case USB_IS0_DVSQ_SUSP2:
-    case USB_IS0_DVSQ_SUSP3:
+    case LINK_REG_INTSTS0_DVSQ_STATE_SUSP0:
+    case LINK_REG_INTSTS0_DVSQ_STATE_SUSP1:
+    case LINK_REG_INTSTS0_DVSQ_STATE_SUSP2:
+    case LINK_REG_INTSTS0_DVSQ_STATE_SUSP3:
        dcd_event_bus_signal(rhport, DCD_EVENT_SUSPEND, true);
 #if (0==USE_SOF)
       LINK_REG->INTENB0_b.SOFE = 1;
@@ -783,23 +785,23 @@ void dcd_int_handler(uint8_t rhport)
       break;
     }
   }
-  if (is0 & USB_IS0_CTRT) {
-    if (is0 & USB_IS0_CTSQ_SETUP) {
+  if (is0 & LINK_REG_INTSTS0_CTRT_Msk) {
+    if (is0 & LINK_REG_INTSTS0_CTSQ_CTRL_RDATA) {
       /* A setup packet has been received. */
       process_setup_packet(rhport);
-    } else if (0 == (is0 & USB_IS0_CTSQ_MSK)) {
+    } else if (0 == (is0 & LINK_REG_INTSTS0_CTSQ_Msk)) {
       /* A ZLP has been sent/received. */
       process_status_completion(rhport);
     }
   }
-  if (is0 & USB_IS0_BEMP) {
+  if (is0 & LINK_REG_INTSTS0_BEMP_Msk) {
     const unsigned s = LINK_REG->BEMPSTS;
     LINK_REG->BEMPSTS = 0;
     if (s & 1) {
       process_pipe0_bemp(rhport);
     }
   }
-  if (is0 & USB_IS0_BRDY) {
+  if (is0 & LINK_REG_INTSTS0_BRDY_Msk) {
     const unsigned m = LINK_REG->BRDYENB;
     unsigned s = LINK_REG->BRDYSTS & m;
     /* clear active bits (don't write 0 to already cleared bits according to the HW manual) */
diff --git a/src/portable/renesas/link/hcd_link.c b/src/portable/renesas/link/hcd_link.c
index 2ada28105..940013c86 100644
--- a/src/portable/renesas/link/hcd_link.c
+++ b/src/portable/renesas/link/hcd_link.c
@@ -207,18 +207,18 @@ static bool pipe0_xfer_in(void)
   const unsigned len = TU_MIN(TU_MIN(rem, mps), vld);
   void          *buf = pipe->buf;
   if (len) {
-    LINK_REG->DCPCTR = USB_PIPECTR_PID_NAK;
+    LINK_REG->DCPCTR = LINK_REG_PIPE_CTR_PID_NAK;
     pipe_read_packet(buf, (volatile void*)&LINK_REG->CFIFO, len);
     pipe->buf = (uint8_t*)buf + len;
   }
   if (len < mps)
-    LINK_REG->CFIFOCTR = USB_FIFOCTR_BCLR;
+    LINK_REG->CFIFOCTR = LINK_REG_CFIFOCTR_BCLR_Msk;
   pipe->remaining = rem - len;
   if ((len < mps) || (rem == len)) {
     pipe->buf = NULL;
     return true;
   }
-  LINK_REG->DCPCTR = USB_PIPECTR_PID_BUF;
+  LINK_REG->DCPCTR = LINK_REG_PIPE_CTR_PID_BUF;
   return false;
 }
 
@@ -238,7 +238,7 @@ static bool pipe0_xfer_out(void)
     pipe->buf = (uint8_t*)buf + len;
   }
   if (len < mps)
-    LINK_REG->CFIFOCTR = USB_FIFOCTR_BVAL;
+    LINK_REG->CFIFOCTR = LINK_REG_CFIFOCTR_BVAL_Msk;
   pipe->remaining = rem - len;
   return false;
 }
@@ -248,7 +248,7 @@ static bool pipe_xfer_in(unsigned num)
   pipe_state_t  *pipe = &_hcd.pipe[num];
   const unsigned rem  = pipe->remaining;
 
-  LINK_REG->D0FIFOSEL = num | USB_FIFOSEL_MBW_8;
+  LINK_REG->D0FIFOSEL = num | LINK_REG_FIFOSEL_MBW_8BIT;
   const unsigned mps  = edpt_max_packet_size(num);
   pipe_wait_for_ready(num);
   const unsigned vld  = LINK_REG->D0FIFOCTR_b.DTLN;
@@ -259,7 +259,7 @@ static bool pipe_xfer_in(unsigned num)
     pipe->buf = (uint8_t*)buf + len;
   }
   if (len < mps)
-    LINK_REG->D0FIFOCTR = USB_FIFOCTR_BCLR;
+    LINK_REG->D0FIFOCTR = LINK_REG_CFIFOCTR_BCLR_Msk;
   LINK_REG->D0FIFOSEL = 0;
   while (LINK_REG->D0FIFOSEL_b.CURPIPE) ; /* if CURPIPE bits changes, check written value */
   pipe->remaining = rem - len;
@@ -280,7 +280,7 @@ static bool pipe_xfer_out(unsigned num)
     return true;
   }
 
-  LINK_REG->D0FIFOSEL = num | USB_FIFOSEL_MBW_16 | (TU_BYTE_ORDER == TU_BIG_ENDIAN ? USB_FIFOSEL_BIGEND : 0);
+  LINK_REG->D0FIFOSEL = num | LINK_REG_FIFOSEL_MBW_16BIT | (TU_BYTE_ORDER == TU_BIG_ENDIAN ? LINK_REG_FIFOSEL_BIGEND : 0);
   const unsigned mps  = edpt_max_packet_size(num);
   pipe_wait_for_ready(num);
   const unsigned len  = TU_MIN(rem, mps);
@@ -290,7 +290,7 @@ static bool pipe_xfer_out(unsigned num)
     pipe->buf = (uint8_t*)buf + len;
   }
   if (len < mps)
-    LINK_REG->D0FIFOCTR = USB_FIFOCTR_BVAL;
+    LINK_REG->D0FIFOCTR = LINK_REG_CFIFOCTR_BVAL_Msk;
   LINK_REG->D0FIFOSEL = 0;
   while (LINK_REG->D0FIFOSEL_b.CURPIPE) ; /* if CURPIPE bits changes, check written value */
   pipe->remaining = rem - len;
@@ -304,12 +304,12 @@ static bool process_pipe0_xfer(uint8_t dev_addr, uint8_t ep_addr, void* buffer,
 
   /* configure fifo direction and access unit settings */
   if (dir_in) { /* IN, a byte */
-    LINK_REG->CFIFOSEL = USB_FIFOSEL_MBW_8;
-    while (LINK_REG->CFIFOSEL & USB_FIFOSEL_TX) ;
+    LINK_REG->CFIFOSEL = LINK_REG_FIFOSEL_MBW_8BIT;
+    while (LINK_REG->CFIFOSEL & LINK_REG_CFIFOSEL_ISEL_WRITE) ;
   } else { /* OUT, 2 bytes */
-    LINK_REG->CFIFOSEL =
-      USB_FIFOSEL_TX | USB_FIFOSEL_MBW_16 | (TU_BYTE_ORDER == TU_BIG_ENDIAN ? USB_FIFOSEL_BIGEND : 0);
-    while (!(LINK_REG->CFIFOSEL & USB_FIFOSEL_TX)) ;
+    LINK_REG->CFIFOSEL = LINK_REG_CFIFOSEL_ISEL_WRITE | LINK_REG_FIFOSEL_MBW_16BIT |
+             (TU_BYTE_ORDER == TU_BIG_ENDIAN ? LINK_REG_FIFOSEL_BIGEND : 0);
+    while (!(LINK_REG->CFIFOSEL & LINK_REG_CFIFOSEL_ISEL_WRITE)) ;
   }
 
   pipe_state_t *pipe = &_hcd.pipe[0];
@@ -325,15 +325,15 @@ static bool process_pipe0_xfer(uint8_t dev_addr, uint8_t ep_addr, void* buffer,
   } else { /* ZLP */
     pipe->buf        = NULL;
     if (!dir_in) { /* OUT */
-      LINK_REG->CFIFOCTR = USB_FIFOCTR_BVAL;
+      LINK_REG->CFIFOCTR = LINK_REG_CFIFOCTR_BVAL_Msk;
     }
     if (dir_in == LINK_REG->DCPCFG_b.DIR) {
-      TU_ASSERT(USB_PIPECTR_PID_NAK == LINK_REG->DCPCTR_b.PID);
+      TU_ASSERT(LINK_REG_PIPE_CTR_PID_NAK == LINK_REG->DCPCTR_b.PID);
       LINK_REG->DCPCTR_b.SQSET = 1;
       LINK_REG->DCPCFG_b.DIR = dir_in ^ 1;
     }
   }
-  LINK_REG->DCPCTR = USB_PIPECTR_PID_BUF;
+  LINK_REG->DCPCTR = LINK_REG_PIPE_CTR_PID_BUF;
   return true;
 }
 
@@ -355,7 +355,7 @@ static bool process_pipe_xfer(uint8_t dev_addr, uint8_t ep_addr, void *buffer, u
     } else { /* ZLP */
       LINK_REG->D0FIFOSEL = num;
       pipe_wait_for_ready(num);
-      LINK_REG->D0FIFOCTR = USB_FIFOCTR_BVAL;
+      LINK_REG->D0FIFOCTR = LINK_REG_CFIFOCTR_BVAL_Msk;
       LINK_REG->D0FIFOSEL = 0;
       while (LINK_REG->D0FIFOSEL_b.CURPIPE) continue; /* if CURPIPE bits changes, check written value */
     }
@@ -364,12 +364,12 @@ static bool process_pipe_xfer(uint8_t dev_addr, uint8_t ep_addr, void *buffer, u
     volatile reg_pipetre_t *pt = get_pipetre(num);
     if (pt) {
       const unsigned     mps = edpt_max_packet_size(num);
-      if (*ctr & 0x3) *ctr = USB_PIPECTR_PID_NAK;
+      if (*ctr & 0x3) *ctr = LINK_REG_PIPE_CTR_PID_NAK;
       pt->TRE   = TU_BIT(8);
       pt->TRN   = (buflen + mps - 1) / mps;
       pt->TRENB = 1;
     }
-    *ctr = USB_PIPECTR_PID_BUF;
+    *ctr = LINK_REG_PIPE_CTR_PID_BUF;
   }
   return true;
 }
@@ -403,10 +403,10 @@ static void process_pipe_nrdy(uint8_t rhport, unsigned num)
   unsigned result;
   uint16_t volatile *ctr = get_pipectr(num);
   // TU_LOG1("NRDY %d %x\n", num, *ctr);
-  switch (*ctr & USB_PIPECTR_PID_MSK) {
+  switch (*ctr & LINK_REG_PIPE_CTR_PID_Msk) {
     default: return;
-    case USB_PIPECTR_PID_STALL: result = XFER_RESULT_STALLED; break;
-    case USB_PIPECTR_PID_NAK:   result = XFER_RESULT_FAILED;  break;
+    case LINK_REG_PIPE_CTR_PID_STALL: result = XFER_RESULT_STALLED; break;
+    case LINK_REG_PIPE_CTR_PID_NAK:   result = XFER_RESULT_FAILED;  break;
   }
   pipe_state_t *pipe = &_hcd.pipe[num];
   hcd_event_xfer_complete(pipe->dev, pipe->ep,
@@ -464,10 +464,10 @@ bool hcd_init(uint8_t rhport)
   LINK_REG->DPUSR0R_FS_b.FIXPHY0 = 0u; /* Transceiver Output fixed */
 
   /* Setup default control pipe */
-  LINK_REG->DCPCFG = USB_PIPECFG_SHTNAK;
+  LINK_REG->DCPCFG = LINK_REG_PIPECFG_SHTNAK_Msk;
   LINK_REG->DCPMAXP = 64;
-  LINK_REG->INTENB0 = USB_IS0_BRDY | USB_IS0_NRDY | USB_IS0_BEMP;
-  LINK_REG->INTENB1 = USB_IS1_SACK | USB_IS1_SIGN | USB_IS1_ATTCH | USB_IS1_DTCH;
+  LINK_REG->INTENB0 = LINK_REG_INTSTS0_BRDY_Msk | LINK_REG_INTSTS0_NRDY_Msk | LINK_REG_INTSTS0_BEMP_Msk;
+  LINK_REG->INTENB1 = LINK_REG_INTSTS1_SACK_Msk | LINK_REG_INTSTS1_SIGN_Msk | LINK_REG_INTSTS1_ATTCH_Msk | LINK_REG_INTSTS1_DTCH_Msk;
   LINK_REG->BEMPENB = 1;
   LINK_REG->NRDYENB = 1;
   LINK_REG->BRDYENB = 1;
@@ -505,7 +505,7 @@ bool hcd_port_connect_status(uint8_t rhport)
 
 void hcd_port_reset(uint8_t rhport)
 {
-  LINK_REG->DCPCTR = USB_PIPECTR_PID_NAK;
+  LINK_REG->DCPCTR = LINK_REG_PIPE_CTR_PID_NAK;
   while (LINK_REG->DCPCTR_b.PBUSY) ;
   hcd_int_disable(rhport);
   LINK_REG->DVSTCTR0_b.UACT = 0;
@@ -530,8 +530,8 @@ tusb_speed_t hcd_port_speed_get(uint8_t rhport)
   (void)rhport;
   switch (LINK_REG->DVSTCTR0_b.RHST) {
     default: return TUSB_SPEED_INVALID;
-    case USB_DVSTCTR0_FULL: return TUSB_SPEED_FULL;
-    case USB_DVSTCTR0_LOW:  return TUSB_SPEED_LOW;
+    case LINK_REG_DVSTCTR0_RHST_FS: return TUSB_SPEED_FULL;
+    case LINK_REG_DVSTCTR0_RHST_LS:  return TUSB_SPEED_LOW;
   }
 }
 
@@ -572,7 +572,7 @@ bool hcd_setup_send(uint8_t rhport, uint8_t dev_addr, uint8_t const setup_packet
   TU_ASSERT(dev_addr < 6); /* USBa can only handle addresses from 0 to 5. */
   TU_ASSERT(0 == LINK_REG->DCPCTR_b.SUREQ);
 
-  LINK_REG->DCPCTR = USB_PIPECTR_PID_NAK;
+  LINK_REG->DCPCTR = LINK_REG_PIPE_CTR_PID_NAK;
 
   _hcd.pipe[0].buf = NULL;
   _hcd.pipe[0].length = 8;
@@ -605,14 +605,14 @@ bool hcd_edpt_open(uint8_t rhport, uint8_t dev_addr, tusb_desc_endpoint_t const
   const unsigned epn     = tu_edpt_number(ep_addr);
   const unsigned mps     = tu_edpt_packet_size(ep_desc);
   if (0 == epn) {
-    LINK_REG->DCPCTR = USB_PIPECTR_PID_NAK;
+    LINK_REG->DCPCTR = LINK_REG_PIPE_CTR_PID_NAK;
     hcd_devtree_info_t devtree;
     hcd_devtree_get_info(dev_addr, &devtree);
     uint16_t volatile *devadd = (uint16_t volatile *)(uintptr_t) &LINK_REG->DEVADD[0];
     devadd += dev_addr;
     while (LINK_REG->DCPCTR_b.PBUSY) ;
     LINK_REG->DCPMAXP = (dev_addr << 12) | mps;
-    *devadd = (TUSB_SPEED_FULL == devtree.speed) ? USB_DEVADD_FULL : USB_DEVADD_LOW;
+    *devadd = (TUSB_SPEED_FULL == devtree.speed) ? LINK_REG_DEVADD_USBSPD_FS : LINK_REG_DEVADD_USBSPD_LS;
     _hcd.ctl_mps[dev_addr] = mps;
     return true;
   }
@@ -634,22 +634,22 @@ bool hcd_edpt_open(uint8_t rhport, uint8_t dev_addr, tusb_desc_endpoint_t const
   LINK_REG->PIPESEL = num;
   LINK_REG->PIPEMAXP = (dev_addr << 12) | mps;
   volatile uint16_t *ctr = get_pipectr(num);
-  *ctr = USB_PIPECTR_ACLRM | USB_PIPECTR_SQCLR;
+  *ctr = LINK_REG_PIPE_CTR_ACLRM_Msk | LINK_REG_PIPE_CTR_SQCLR_Msk;
   *ctr = 0;
   unsigned cfg = ((1 ^ dir_in) << 4) | epn;
   if (xfer == TUSB_XFER_BULK) {
-    cfg |= USB_PIPECFG_BULK | USB_PIPECFG_SHTNAK | USB_PIPECFG_DBLB;
+    cfg |= LINK_REG_PIPECFG_TYPE_BULK | LINK_REG_PIPECFG_SHTNAK_Msk | LINK_REG_PIPECFG_DBLB_Msk;
   } else if (xfer == TUSB_XFER_INTERRUPT) {
-    cfg |= USB_PIPECFG_INT;
+    cfg |= LINK_REG_PIPECFG_TYPE_ISO;
   } else {
-    cfg |= USB_PIPECFG_ISO | USB_PIPECFG_DBLB;
+    cfg |= LINK_REG_PIPECFG_TYPE_INT | LINK_REG_PIPECFG_DBLB_Msk;
   }
   LINK_REG->PIPECFG = cfg;
   LINK_REG->BRDYSTS = 0x1FFu ^ TU_BIT(num);
   LINK_REG->NRDYENB |= TU_BIT(num);
   LINK_REG->BRDYENB |= TU_BIT(num);
   if (!dir_in) {
-    *ctr = USB_PIPECTR_PID_BUF;
+    *ctr = LINK_REG_PIPE_CTR_PID_BUF;
   }
   hcd_int_enable(rhport);
 
@@ -676,12 +676,12 @@ bool hcd_edpt_clear_stall(uint8_t dev_addr, uint8_t ep_addr)
     *ctr = pid & 2;
     *ctr = 0;
   }
-  *ctr = USB_PIPECTR_SQCLR;
+  *ctr = LINK_REG_PIPE_CTR_SQCLR_Msk;
   unsigned const epn = tu_edpt_number(ep_addr);
   if (!epn) return true;
 
   if (!tu_edpt_dir(ep_addr)) { /* OUT */
-    *ctr = USB_PIPECTR_PID_BUF;
+    *ctr = LINK_REG_PIPE_CTR_PID_BUF;
   }
   return true;
 }
@@ -702,44 +702,44 @@ void hcd_int_handler(uint8_t rhport)
   unsigned is1 = LINK_REG->INTSTS1;
   unsigned is0 = LINK_REG->INTSTS0;
   /* clear active bits except VALID (don't write 0 to already cleared bits according to the HW manual) */
-  LINK_REG->INTSTS1 = ~((USB_IS1_SACK | USB_IS1_SIGN | USB_IS1_ATTCH | USB_IS1_DTCH) & is1);
-  LINK_REG->INTSTS0 = ~((USB_IS0_BRDY | USB_IS0_NRDY | USB_IS0_BEMP) & is0);
+  LINK_REG->INTSTS1 = ~((LINK_REG_INTSTS1_SACK_Msk | LINK_REG_INTSTS1_SIGN_Msk | LINK_REG_INTSTS1_ATTCH_Msk | LINK_REG_INTSTS1_DTCH_Msk) & is1);
+  LINK_REG->INTSTS0 = ~((LINK_REG_INTSTS0_BRDY_Msk | LINK_REG_INTSTS0_NRDY_Msk | LINK_REG_INTSTS0_BEMP_Msk) & is0);
   // TU_LOG1("IS %04x %04x\n", is0, is1);
   is1 &= LINK_REG->INTENB1;
   is0 &= LINK_REG->INTENB0;
 
-  if (is1 & USB_IS1_SACK) {
+  if (is1 & LINK_REG_INTSTS1_SACK_Msk) {
     /* Set DATA1 in advance for the next transfer. */
     LINK_REG->DCPCTR_b.SQSET = 1;
     hcd_event_xfer_complete(
       LINK_REG->DCPMAXP_b.DEVSEL, tu_edpt_addr(0, TUSB_DIR_OUT), 8, XFER_RESULT_SUCCESS, true);
   }
-  if (is1 & USB_IS1_SIGN) {
+  if (is1 & LINK_REG_INTSTS1_SIGN_Msk) {
     hcd_event_xfer_complete(
       LINK_REG->DCPMAXP_b.DEVSEL, tu_edpt_addr(0, TUSB_DIR_OUT), 8, XFER_RESULT_FAILED, true);
   }
-  if (is1 & USB_IS1_ATTCH) {
+  if (is1 & LINK_REG_INTSTS1_ATTCH_Msk) {
     LINK_REG->DVSTCTR0_b.UACT = 1;
     _hcd.need_reset = true;
-    LINK_REG->INTENB1 = (LINK_REG->INTENB1 & ~USB_IS1_ATTCH) | USB_IS1_DTCH;
+    LINK_REG->INTENB1 = (LINK_REG->INTENB1 & ~LINK_REG_INTSTS1_ATTCH_Msk) | LINK_REG_INTSTS1_DTCH_Msk;
     hcd_event_device_attach(rhport, true);
   }
-  if (is1 & USB_IS1_DTCH) {
+  if (is1 & LINK_REG_INTSTS1_DTCH_Msk) {
     LINK_REG->DVSTCTR0_b.UACT = 0;
     if (LINK_REG->DCPCTR_b.SUREQ)
       LINK_REG->DCPCTR_b.SUREQCLR = 1;
-    LINK_REG->INTENB1 = (LINK_REG->INTENB1 & ~USB_IS1_DTCH) | USB_IS1_ATTCH;
+    LINK_REG->INTENB1 = (LINK_REG->INTENB1 & ~LINK_REG_INTSTS1_DTCH_Msk) | LINK_REG_INTSTS1_ATTCH_Msk;
     hcd_event_device_remove(rhport, true);
   }
 
-  if (is0 & USB_IS0_BEMP) {
+  if (is0 & LINK_REG_INTSTS0_BEMP_Msk) {
     const unsigned s = LINK_REG->BEMPSTS;
     LINK_REG->BEMPSTS = 0;
     if (s & 1) {
       process_pipe0_bemp(rhport);
     }
   }
-  if (is0 & USB_IS0_NRDY) {
+  if (is0 & LINK_REG_INTSTS0_NRDY_Msk) {
     const unsigned m = LINK_REG->NRDYENB;
     unsigned s = LINK_REG->NRDYSTS & m;
     LINK_REG->NRDYSTS = ~s;
@@ -753,7 +753,7 @@ void hcd_int_handler(uint8_t rhport)
       s &= ~TU_BIT(num);
     }
   }
-  if (is0 & USB_IS0_BRDY) {
+  if (is0 & LINK_REG_INTSTS0_BRDY_Msk) {
     const unsigned m = LINK_REG->BRDYENB;
     unsigned s = LINK_REG->BRDYSTS & m;
     /* clear active bits (don't write 0 to already cleared bits according to the HW manual) */
diff --git a/src/portable/renesas/link/link_type.h b/src/portable/renesas/link/link_type.h
index 33cf7879e..f1d0130cc 100644
--- a/src/portable/renesas/link/link_type.h
+++ b/src/portable/renesas/link/link_type.h
@@ -33,72 +33,6 @@
 extern "C" {
 #endif
 
-//--------------------------------------------------------------------+
-// MACRO TYPEDEF CONSTANT ENUM DECLARATION
-//--------------------------------------------------------------------+
-#define USB_DVSTCTR0_LOW  (1u)
-#define USB_DVSTCTR0_FULL (2u)
-
-#define USB_FIFOSEL_TX	   ((uint16_t) (1u << 5))
-#define USB_FIFOSEL_BIGEND ((uint16_t) (1u << 8))
-#define USB_FIFOSEL_MBW_8  ((uint16_t) (0u << 10))
-#define USB_FIFOSEL_MBW_16 ((uint16_t) (1u << 10))
-#define USB_IS0_CTSQ	   ((uint16_t) (7u))
-#define USB_IS0_DVSQ	   ((uint16_t) (7u << 4))
-#define USB_IS0_VALID	   ((uint16_t) (1u << 3))
-#define USB_IS0_BRDY	   ((uint16_t) (1u << 8))
-#define USB_IS0_NRDY	   ((uint16_t) (1u << 9))
-#define USB_IS0_BEMP	   ((uint16_t) (1u << 10))
-#define USB_IS0_CTRT	   ((uint16_t) (1u << 11))
-#define USB_IS0_DVST	   ((uint16_t) (1u << 12))
-#define USB_IS0_SOFR	   ((uint16_t) (1u << 13))
-#define USB_IS0_RESM	   ((uint16_t) (1u << 14))
-#define USB_IS0_VBINT	   ((uint16_t) (1u << 15))
-#define USB_IS1_SACK	   ((uint16_t) (1u << 4))
-#define USB_IS1_SIGN	   ((uint16_t) (1u << 5))
-#define USB_IS1_EOFERR	   ((uint16_t) (1u << 6))
-#define USB_IS1_ATTCH	   ((uint16_t) (1u << 11))
-#define USB_IS1_DTCH	   ((uint16_t) (1u << 12))
-#define USB_IS1_BCHG	   ((uint16_t) (1u << 14))
-#define USB_IS1_OVRCR	   ((uint16_t) (1u << 15))
-
-#define USB_IS0_CTSQ_MSK   (7u)
-#define USB_IS0_CTSQ_SETUP (1u)
-#define USB_IS0_DVSQ_DEF   (1u << 4)
-#define USB_IS0_DVSQ_ADDR  (2u << 4)
-#define USB_IS0_DVSQ_SUSP0 (4u << 4)
-#define USB_IS0_DVSQ_SUSP1 (5u << 4)
-#define USB_IS0_DVSQ_SUSP2 (6u << 4)
-#define USB_IS0_DVSQ_SUSP3 (7u << 4)
-
-#define USB_PIPECTR_PID_MSK   (3u)
-#define USB_PIPECTR_PID_NAK   (0u)
-#define USB_PIPECTR_PID_BUF   (1u)
-#define USB_PIPECTR_PID_STALL (2u)
-#define USB_PIPECTR_CCPL      (1u << 2)
-#define USB_PIPECTR_SQMON     (1u << 6)
-#define USB_PIPECTR_SQCLR     (1u << 8)
-#define USB_PIPECTR_ACLRM     (1u << 9)
-#define USB_PIPECTR_INBUFM    (1u << 14)
-#define USB_PIPECTR_BSTS      (1u << 15)
-
-#define USB_FIFOCTR_DTLN (0x1FF)
-#define USB_FIFOCTR_FRDY (1u << 13)
-#define USB_FIFOCTR_BCLR (1u << 14)
-#define USB_FIFOCTR_BVAL (1u << 15)
-
-#define USB_PIPECFG_SHTNAK (1u << 7)
-#define USB_PIPECFG_DBLB   (1u << 9)
-#define USB_PIPECFG_BULK   (1u << 14)
-#define USB_PIPECFG_ISO	   (3u << 14)
-#define USB_PIPECFG_INT	   (2u << 14)
-
-#define FIFO_REQ_CLR  (1u)
-#define FIFO_COMPLETE (1u << 1)
-
-#define USB_DEVADD_LOW	(1u << 6)
-#define USB_DEVADD_FULL (2u << 6)
-
 /*--------------------------------------------------------------------*/
 /* Register Definitions                                           */
 /*--------------------------------------------------------------------*/
@@ -1651,6 +1585,38 @@ TU_ATTR_PACKED_END /* End of definition of packed structs (used by the CCRX tool
 #define LINK_REG_DPUSR1R_FS_DPINTE0_Pos	  (0UL)	       /* DPINTE0 (Bit 0) */
 #define LINK_REG_DPUSR1R_FS_DPINTE0_Msk	  (0x1UL)      /* DPINTE0 (Bitfield-Mask: 0x01) */
 
+/*--------------------------------------------------------------------*/
+/* Register Bit Utils                                           */
+/*--------------------------------------------------------------------*/
+#define LINK_REG_PIPE_CTR_PID_NAK   (0U << LINK_REG_PIPE_CTR_PID_Pos) /* NAK response */
+#define LINK_REG_PIPE_CTR_PID_BUF   (1U << LINK_REG_PIPE_CTR_PID_Pos) /* BUF response (depends buffer state) */
+#define LINK_REG_PIPE_CTR_PID_STALL (2U << LINK_REG_PIPE_CTR_PID_Pos) /* STALL response */
+
+#define LINK_REG_DVSTCTR0_RHST_LS	(1U << LINK_REG_DVSTCTR0_RHST_Pos) /*  Low-speed connection */
+#define LINK_REG_DVSTCTR0_RHST_FS	(2U << LINK_REG_DVSTCTR0_RHST_Pos) /*  Full-speed connection */
+
+#define LINK_REG_DEVADD_USBSPD_LS (1U << LINK_REG_DEVADD_USBSPD_Pos) /* Target Device Low-speed */
+#define LINK_REG_DEVADD_USBSPD_FS (2U << LINK_REG_DEVADD_USBSPD_Pos) /* Target Device Full-speed */
+
+#define LINK_REG_CFIFOSEL_ISEL_WRITE	(1U << LINK_REG_CFIFOSEL_ISEL_Pos)	/* FIFO write AKA TX*/
+
+#define LINK_REG_FIFOSEL_BIGEND			(1U << LINK_REG_CFIFOSEL_BIGEND_Pos)	/* FIFO Big Endian */
+#define LINK_REG_FIFOSEL_MBW_8BIT			(0U << LINK_REG_CFIFOSEL_MBW_Pos)	/* 8-bit width */
+#define LINK_REG_FIFOSEL_MBW_16BIT			(1U << LINK_REG_CFIFOSEL_MBW_Pos)	/* 16-bit width */
+
+#define LINK_REG_INTSTS0_CTSQ_CTRL_RDATA (1U << LINK_REG_INTSTS0_CTSQ_Pos)
+
+#define LINK_REG_INTSTS0_DVSQ_STATE_DEF (1U << LINK_REG_INTSTS0_DVSQ_Pos) /* Default state */
+#define LINK_REG_INTSTS0_DVSQ_STATE_ADDR (2U << LINK_REG_INTSTS0_DVSQ_Pos) /* Address state */
+#define LINK_REG_INTSTS0_DVSQ_STATE_SUSP0 (4U << LINK_REG_INTSTS0_DVSQ_Pos) /* Suspend state */
+#define LINK_REG_INTSTS0_DVSQ_STATE_SUSP1 (5U << LINK_REG_INTSTS0_DVSQ_Pos) /* Suspend state */
+#define LINK_REG_INTSTS0_DVSQ_STATE_SUSP2 (6U << LINK_REG_INTSTS0_DVSQ_Pos) /* Suspend state */
+#define LINK_REG_INTSTS0_DVSQ_STATE_SUSP3 (7U << LINK_REG_INTSTS0_DVSQ_Pos) /* Suspend state */
+
+#define LINK_REG_PIPECFG_TYPE_BULK (1U << LINK_REG_PIPECFG_TYPE_Pos)
+#define LINK_REG_PIPECFG_TYPE_INT (2U << LINK_REG_PIPECFG_TYPE_Pos)
+#define LINK_REG_PIPECFG_TYPE_ISO (3U << LINK_REG_PIPECFG_TYPE_Pos)
+
 #ifdef __cplusplus
 }
 #endif