UBRX_1MHZ_19200=54, UMCTL_1MHZ_19200=(0 << 4) + (5 << 1) + 0,
UBRX_1MHZ_38400=27, UMCTL_1MHZ_38400=(0 << 4) + (2 << 1) + 0,
UBRX_1MHZ_115200=9, UMCTL_1MHZ_115200=(0 << 4) + (1 << 1) + 0,
+ UBRX_2MHZ_115200=18, UMCTL_2MHZ_115200=(8 << 4) + (2 << 1) + 0,
+ UBRX_4MHZ_115200=36, UMCTL_4MHZ_115200=(2 << 4) + (4 << 1) + 0,
UBRX_1E6HZ_9600=104, UMCTL_1E6HZ_9600=(0 << 4) + (1 << 1) + 0,
UBRX_1E6HZ_19200=52, UMCTL_1E6HZ_19200=(0 << 4) + (0 << 1) + 0,
UBRX_1E6HZ_115200=8, UMCTL_1E6HZ_115200=(0 << 4) + (6 << 1) + 0,