The RX data lane can be initialized using the forcerxmode signal. This behavior is shown in the following figure.
-
forcerxmode
is the asynchronous signal and is sampled usingcore_clk
. - The
forcerxmode
assertion resets the lane initialization status, which is shown as theinit_done
signal in the waveform. - LP-11 should be driven on dp/dn serial lines for T_INIT or longer by the MIPI D-PHY TX (Master). This initializes the RX data lane.
-
Stopstate
is driven High after lane is initialized. -
forcerxmode
can be deasserted by samplingstopstate
.
Figure 1. RX Data Lane Initialization Using forcerxmode
Note: Back channel communication is not available from the MIPI D-PHY RX (Slave) to the MIPI
D-PHY TX (Master). Hence, you are responsible for making sure that MIPI D-PHY TX drives LP-11
on serial lines after
forcerxmode
is asserted on the MIPI D-PHY RX core
module. Otherwise, the MIPI D-PHY RX core does not complete the initialization.