Test: Examples of Embedded System Digital Signal Processing

Explanation: The bandwidth of any filter depends on the speed of operations held in a digital signal processor.

Explanation: Digital signal processor function involves setting up of two tables and one is for sampled data and the other table is for filter coefficients which determine the filter response. It takes values from the table and performs programs.

Explanation: Loop control timing varies depending on the branch predictions which inturn make bandwidth predictions difficult thereby lowering the bandwidth of the digital signal processor.

Explanation: RISC architecture can offer some improvement in the low bandwidth issue since it has the ability to perform operations in a single cycle.

Explanation: Harvard architecture in a digital signal processor allows continuous data fetching and performing the corresponding instructions.

Explanation: ARM9E can also have DSP level of performance without having a digital signal processor by its enhanced DSP instructions.

Explanation: By using hardware multipliers, counters etc the entire hardware can be redesigned to perform some specific functions which are used in digital signal processors. One such is the modulo-counter to form the loop structure.

Explanation: Motorola DSP56000 is a powerful digital signal processor which is used in digital audio applications which have the capability of noise reduction and multi-band graphics whereas 8087 is a coprocessor and 80486 and 8086 are microprocessors.

Explanation: In order to increase the resolution, DSP56000 is a 24-bit data word processor.

Explanation: It possess three separate external buses, one is for the program and the remaining two buses are for X and Y memories for data.

Explanation: DSP56000 possess Harvard architecture since this architecture has separate bus for program memory and data memory.

Explanation: DSP56000 possess two external bus switches in which one is for data and the other is for the address for communicating with the outside world and these two switches are reproduced by the internal data bus and AAU.

Explanation: AAU have 24 address registers in three banks of eight.

Explanation: DSP56000 have six 24-bit registers for controlling the loop counts,operating mode, stack manipulation and condition codes.

Explanation: The DSP56000 have a 24-bit program counter in which the upper 8 bits are only used for sign extension.