The DSP has general-purpose and dedicated registers in each of its functional blocks, страница 27

Table B-32. Power Management Register Interactions Between Functions  (Continued)

USB DSP Reg iste rs

O ve rvie w

The USB registers control the USB interface, specifically the operation and configuration of the USB Interface. Most of these registers are accessible only via the USB Bus, although a subset is accessible to the DSP.

The ADSP-2192 USB allows you to configure and attach a single device with multiple interfaces and various endpoint configurations. The advantages to this design are:

•  Programmable descriptors and class specific command interpreter. An MCU is supported on board, which allows you to soft download different configurations and support any number of standard or class specific commands.

•  Eight user defined endpoints are provided. Endpoints can be configured as either BULK, ISO, or INT and can be grouped and assigned to any interface.

DSP Re g ister Definitions

For each endpoint, four registers are defined in order to provide a memory buffer in the DSP. These registers are defined for each endpoint shared by all interfaces that are defined for a total of 4x8 = 32 registers. These registers are read/write by the DSP only.

Table B-33. USB DSP Register Definitions

Table B-33. USB DSP Register Definitions (Continued)