MMC Controller Operation

This section describes the detailed structure and operation of the MMC Controller.

• Sessions and Request Management
  Describes how the MultiMediaCard Controller manages the sessions and sets the order of requests.
• State Machines
  Description of the structure and operation of state machines.
• Command Objects
  The MultiMediaCard controller uses a TMMCCommandDesc object to contain command and parameter information when issuing a command over the bus.
• Power Management
  Describes the power management policies.
• Double Buffers
  To improve throughput, Symbian platform provides the double buffer mechanism. This is a feature that allows a block of data to be prepared by the media driver while the hardware transfers a block of data. DMA transfers data without interrupting the CPU.