adsp-21992 Analog Devices, Inc., adsp-21992 Datasheet - Page 16

• Manufacturer Part Number: adsp-21992
• Description: Mixed Signal Dsp Controller With Can
• Manufacturer: Analog Devices, Inc.

ADSP-21992
VCSE is Analog Devices technology for creating, using, and
reusing software components (independent modules of sub-
stantial functionality) to quickly and reliably assemble software
applications. The user can also download components from the
Web, drop them into the application and publish component
archives from within VisualDSP++. VCSE supports component
implementation in C/C++ or assembly language.
Use the Expert Linker to visually manipulate the placement of
code and data on the embedded system, view memory utiliza-
tion in a color-coded graphical form, easily move code and data
to different areas of the DSP or external memory with the drag
of the mouse, and examine runtime stack and heap usage. The
Expert Linker is fully compatible with existing linker definition
file (LDF), allowing the developer to move between the graphi-
cal and textual environments.
Analog Devices DSP emulators use the IEEE 1149.1 JTAG test
access port of the ADSP-21992 processor to monitor and con-
trol the target board processor during emulation. The emulator
provides full speed emulation, allowing inspection and modifi-
cation of memory, registers, and processor stacks. Nonintrusive
in-circuit emulation is assured by the use of the processor JTAG
interface—target system loading and timing are not affected by
the emulator.
In addition to the software and hardware development tools
available from Analog Devices, third parties provide a wide
range of tools supporting the SHARC processor family. Hard-
ware tools include SHARC DSP PC plug-in cards. Third-party
software tools include DSP libraries, real-time operating sys-
tems, and block diagram design tools.
DESIGNING AN EMULATOR-COMPATIBLE DSP
BOARD
The Analog Devices family of emulators are tools that every
DSP developer needs to test and debug hardware and software
systems. Analog Devices has supplied an IEEE 1149.1 JTAG test
access port (TAP) on each JTAG DSP. The emulator uses the
TAP to access the internal features of the DSP, allowing the
developer to load code, set breakpoints, observe variables,
observe memory, and examine registers. The DSP must be
halted to send data and commands, but once an operation has
been completed by the emulator, the DSP system is set running
at full speed with no impact on system timing.
To use these emulators, the target board must include a header
that connects the DSP JTAG port to the emulator.
For details on target board design issues including mechanical
layout, single processor connections, multiprocessor scan
chains, signal buffering, signal termination, and emulator pod
logic, see the EE-68: JTAG Emulation Technical Reference on the
Analog Devices website (www.analog.com)—use site search on
“EE-68.” This document is updated regularly to keep pace
with improvements to emulator support.
ADDITIONAL INFORMATION
This data sheet provides a general overview of the ADSP-21992
architecture and functionality. For detailed information on the
ADSP-21992 embedded DSP core architecture, instruction set,
Rev. A | Page 16 of 60 | August 2007
communications ports and embedded control peripherals, refer
to the ADSP-2199x Mixed Signal DSP Controller Hardware Ref-
erence Manual.