diff --git a/arch/arm/src/lpc43xx/chip/lpc4310203050_pinconfig.h b/arch/arm/src/lpc43xx/chip/lpc4310203050_pinconfig.h
index 10c7573c604..118acebec61 100644
--- a/arch/arm/src/lpc43xx/chip/lpc4310203050_pinconfig.h
+++ b/arch/arm/src/lpc43xx/chip/lpc4310203050_pinconfig.h
@@ -802,15 +802,17 @@
 #define PINCONF_T3_MAT3_1        (PINCONF_FUNC6|PINCONF_PINS2|PINCONF_PIN_7)
 #define PINCONF_T3_MAT3_2        (PINCONF_FUNC6|PINCONF_PINSC|PINCONF_PIN_10)
 
-#define PINCONF_TRACECLK         (PINCONF_FUNC2|PINCONF_PINSF|PINCONF_PIN_4)
-#define PINCONF_TRACEDATA0_1     (PINCONF_FUNC3|PINCONF_PINSF|PINCONF_PIN_5)
-#define PINCONF_TRACEDATA0_2     (PINCONF_FUNC5|PINCONF_PINS7|PINCONF_PIN_4)
-#define PINCONF_TRACEDATA1_1     (PINCONF_FUNC3|PINCONF_PINSF|PINCONF_PIN_6)
-#define PINCONF_TRACEDATA1_2     (PINCONF_FUNC5|PINCONF_PINS7|PINCONF_PIN_5)
-#define PINCONF_TRACEDATA2_1     (PINCONF_FUNC3|PINCONF_PINSF|PINCONF_PIN_7)
-#define PINCONF_TRACEDATA2_2     (PINCONF_FUNC5|PINCONF_PINS7|PINCONF_PIN_6)
-#define PINCONF_TRACEDATA3_1     (PINCONF_FUNC3|PINCONF_PINSF|PINCONF_PIN_8)
-#define PINCONF_TRACEDATA3_2     (PINCONF_FUNC5|PINCONF_PINS7|PINCONF_PIN_7)
+/* The hardware ETM pins will not toggle unless the SLEW FAST bit is set */
+
+#define PINCONF_TRACECLK         (PINCONF_FUNC2|PINCONF_SLEW_FAST|PINCONF_PINSF|PINCONF_PIN_4)
+#define PINCONF_TRACEDATA0_1     (PINCONF_FUNC3|PINCONF_SLEW_FAST|PINCONF_PINSF|PINCONF_PIN_5)
+#define PINCONF_TRACEDATA0_2     (PINCONF_FUNC5|PINCONF_SLEW_FAST|PINCONF_PINS7|PINCONF_PIN_4)
+#define PINCONF_TRACEDATA1_1     (PINCONF_FUNC3|PINCONF_SLEW_FAST|PINCONF_PINSF|PINCONF_PIN_6)
+#define PINCONF_TRACEDATA1_2     (PINCONF_FUNC5|PINCONF_SLEW_FAST|PINCONF_PINS7|PINCONF_PIN_5)
+#define PINCONF_TRACEDATA2_1     (PINCONF_FUNC3|PINCONF_SLEW_FAST|PINCONF_PINSF|PINCONF_PIN_7)
+#define PINCONF_TRACEDATA2_2     (PINCONF_FUNC5|PINCONF_SLEW_FAST|PINCONF_PINS7|PINCONF_PIN_6)
+#define PINCONF_TRACEDATA3_1     (PINCONF_FUNC3|PINCONF_SLEW_FAST|PINCONF_PINSF|PINCONF_PIN_8)
+#define PINCONF_TRACEDATA3_2     (PINCONF_FUNC5|PINCONF_SLEW_FAST|PINCONF_PINS7|PINCONF_PIN_7)
 
 #define PINCONF_U0_DIR_1         (PINCONF_FUNC1|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS2|PINCONF_PIN_6)
 #define PINCONF_U0_DIR_2         (PINCONF_FUNC1|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINSF|PINCONF_PIN_9)