DSP56824 Overview

Table 1-1. DSP56800 Address and Data Buses (Continued)

1.2.6 On-Chip Emulation (OnCE) Module

The On-Chip Emulation (OnCE) module allows the user to interact in a debug environment with the DSP56800 core and its peripherals non-intrusively. Its capabilities include examining registers, memory, or on-chip peripherals; setting breakpoints in memory; and stepping or tracing instructions. It provides simple, inexpensive, and speed-independent access to the DSP56800 core for sophisticated debugging and economical system development. The JTAG port allows access to the OnCE module and through the DSP56824 to its target system, retaining debug control without sacrificing other user-accessible on-chip resources. This capability eliminates the costly cabling and the access to processor pins required by traditional emulator systems. The OnCE interface is fully described in Chapter 12, “OnCE™ Module.”

1.3 DSP56800 Programming Model

The programming model for the registers in the DSP56800 core is shown in Figure 1-4 on page 1-11.

DSP56800 Programming Model

Data Arithmetic Logic Unit

Address Generation Unit

Program Controller Unit

Figure 1-4. DSP56800 Core Programming Model