SN65DSI86: To what extent is the SN65DSI86 compatible with the DisplayPort standard?

Patrick

DP and eDP standard are very similar. The main differences between DP and eDP comes down to the number of electrical wires, different physical connectors, and different usage models. 

The DSI86 will support DP. Since most DP sinks do not support ASSR while the DSI86 by default implements ASSR support, you need to disable the ASSR first. To disable ASSR in DSI86, the first step to make ASSR_CONTROL read/write is to make sure TEST2 pin is be sampled high at the rising edge of EN pin. It is recommended to pull TEST2 pin to 1.8V thru a 1k to 10k resistor. Once TEST2 is high, the following steps must be performed:

1. Write 0x07 to register 0xFF. This will select Page 7.
2. Write 0x01 to register 0x16. This will make ASSR_CONTROL to be read/write.
3. Write 0x00 to register 0xFF. This will select Page 0.
4. Write 0 to bits 1:0 at register 0x5A. This will change from ASSR to Standard DP.

Thanks

David