GPIO pin configuration register
SYNC2_BYPASS | set GPIO input_sync2 signal mode. 0:disable. 1:trigger at negedge. 2or3:trigger at posedge. |
PAD_DRIVER | set this bit to select pad driver. 1:open-drain. 0:normal. |
SYNC1_BYPASS | set GPIO input_sync1 signal mode. 0:disable. 1:trigger at negedge. 2or3:trigger at posedge. |
INT_TYPE | set this value to choose interrupt mode. 0:disable GPIO interrupt. 1:trigger at posedge. 2:trigger at negedge. 3:trigger at any edge. 4:valid at low level. 5:valid at high level |
WAKEUP_ENABLE | set this bit to enable GPIO wakeup.(can only wakeup CPU from Light-sleep Mode) |
CONFIG | reserved |
INT_ENA | set bit 13 to enable CPU interrupt. set bit 14 to enable CPU(not shielded) interrupt. |