What is the difference between Multiplexed and Non-Multiplexed memory architectures?

I am trying to understand the different memory architectures, specifically for the Audi A2. What does it mean for memory to be multiplexed or non-multiplexed and how does it impact the performance of the car?

Multiplexing is the method of combining several digital signals into a single analog signal. In non-multiplexed memory architectures, each memory chip has its own individual data bus and can only communicate with the processor one at a time. This can lead to slower data transfer speeds and lower overall performance of the car.

In contrast, multiplexed memory architectures allow for multiple memory chips to communicate with the processor at the same time through a shared data bus. This can result in faster data transfer speeds and improved performance for tasks that require a lot of memory access, such as video rendering or gaming.

For the Audi A2, it utilizes a non-multiplexed memory architecture, also known as a parallel memory architecture. This means that each memory chip is connected to the processor through its own dedicated data bus. While this may limit the speed of data transfer, it also allows for easier troubleshooting and replacement of individual memory chips if necessary.