PCI224_DACCON_POLAR
#define PCI224_DACCON_POLAR_MASK PCI224_DACCON_POLAR(1)
#define PCI224_DACCON_POLAR_UNI PCI224_DACCON_POLAR(0) /* [0,+V] */
#define PCI224_DACCON_POLAR_BI PCI224_DACCON_POLAR(1) /* [-V,+V] */