JAJSCQ6A December 2016 – June 2018 SN65DSI83-Q1
PRODUCTION DATA.
When the EN pin is deasserted (low), the SN65DSI83-Q1 device is in SHUTDOWN or RESET state. In this state, CMOS inputs are ignored, the MIPI D-PHY inputs are disabled and outputs are high impedance. Transitioning the EN input from a low to a high level after the VCC supply has reached the minimum operating voltage as shown in Figure 6 is critical. This transition is achieved by a control signal to the EN input, or by an external capacitor connected between EN and GND.
When implementing the external capacitor, the size of the external capacitor depends on the power up ramp of the VCC supply, where a slower ramp-up results in a larger value external capacitor. Consider an approximately 200-nF capacitor as a reasonable first estimate for the size of the external capacitor.
Figure 7 and Figure 8 show both EN implementations.
When the SN65DSI83-Q1 is reset while VCC is high, the EN pin must be held low for at least 10 ms before being asserted high as described in Table 2 to be sure that the device is properly reset. The DSI CLK lane MUST be in HS and the DSI data lanes MUST be driven to LP11 while the device is in reset before the EN pin is asserted per the timing described in Table 2.