SPLITTER_CONFIGURATION_MASK
switch (dss1 & SPLITTER_CONFIGURATION_MASK) {
SPLITTER_ENABLE | SPLITTER_CONFIGURATION_MASK |
#define SPLITTER_CONFIGURATION_2_SEGMENT REG_FIELD_PREP(SPLITTER_CONFIGURATION_MASK, 0)
#define SPLITTER_CONFIGURATION_4_SEGMENT REG_FIELD_PREP(SPLITTER_CONFIGURATION_MASK, 1)