MC1_SPEED_REG
ISP1301_I2C_MODE_CONTROL_1, (MC1_SPEED_REG | MC1_DAT_SE0));
~MC1_SPEED_REG);
ISP1301_I2C_MODE_CONTROL_1, MC1_SPEED_REG);
isp1301_clear(isp, ISP1301_I2C_MODE_CONTROL_1, ~MC1_SPEED_REG);
isp1301_write(isp, ISP1301_I2C_MODE_CONTROL_1, MC1_SPEED_REG);