1.4.3.2 PAL_FRAME Enum

typedef enum {
    PAL_FRAME_TYPE_A  = 0,
    PAL_FRAME_TYPE_B  = 2,
    PAL_FRAME_TYPE_BC = 3,
    PAL_FRAME_TYPE_RF = 5,
    PAL_FRAME_NOISE   = 0xFE,
    PAL_FRAME_TEST    = 0xFF,
} PAL_FRAME;