DSI Host timeout counter configuration register 3
HSWR_TOCNT | High-speed write timeout counter This field sets a period for which the DSI Host keeps the link inactive after sending a high-speed write operation. This period is measured in cycles of lanebyteclk. The counting starts when the D-PHY enters the Stop state and causes no interrupts. |
PM | Presp mode When set to 1, this bit ensures that the peripheral response timeout caused by HSWR_TOCNT is used only once per LTDC frame in command mode, when both the following conditions are met: dpivsync_edpiwms has risen and fallen. Packets originated from LTDC in command mode have been transmitted and its FIFO is empty again. In this scenario no non-LTDC command requests are sent to the D-PHY, even if there is traffic from generic interface ready to be sent, making it return to stop state. When it does so, PRESP_TO counter is activated and only when it finishes does the controller send any other traffic that is ready. |