42.6.1.2 Shutdown Mode

Shutdown mode is the operating mode with the lowest power consumption. All analog blocks are disabled, and digital logic is reset. To enter this mode, write to ‘0’ the bits DPHY_RSTZ in the Reset register (CSI_DPHY_RSTZ) and PHY_SHUTDOWNZ in the Shutdown register (CSI_PHY_SHUTDOWNZ). The bit PHY_TESTCLR in the Analog Configuration Control register (CSI_PHY_TEST_CTRL0) is asserted by default.

In Shutdown mode, the differential lines of MIPI_DNx/Px and MIPI_CLKN/P are high impedance (Hi-Z).

By default, the D-PHY is configured to work only on the lower operating range of 80-110 Mbps. If higher bit rate operation is required, the register hsfreqrange (HS RX Control of Lane 0) must be set with the proper code. If the D-PHY is expected to change the bit rate after initialization, hsfreqrange must be updated while in Control mode.

When CSI_DPHY_RSTZ.DPHY_RSTZ and CSI_PHY_SHUTDOWNZ.PHY_SHUTDOWNZ are set to ‘1’, the D-PHY exits Shutdown mode and starts an initialization procedure.