Enhanced version of the Serial Peripheral Interface available on Motorola s MC68HC11 family of CPUs.Enhancements include a wider supported operating frequency range, 4deep read and write fifos, and programmable transfer count dependent interrupt generation.
As with the SPI found in MC68HC11 PROCESSORS the core features programmable clock phase [CPHA] and clock polarity [CPOL]. The core features an 8bit wishbone interface.
Very simple, very small.
The purpose of this project is to explore the issues and implementation of a multiple instruction stream, single data stream processor. We are running two instruction streams on two CPUs which share an address space. The PROCESSORS share a second level cache, and maintain coherence at the L1 cache with a write-invalidate policy. The L2 cache is two-way set associative, with a block size of 8 words, and a total capacity of 512 words.
CFE contains the following important features:
* Easy to port to new SB1250/BCM1480 designs
* Initializes CPUs, caches, memory controllers, and peripherals
* Built-in device drivers for SB1250 SOC peripherals
* Several console choices, including serial ports, ROM
emulators, JTAG, etc.
* Environment storage in NV EEPROM, flash, etc.
* Supports big or little endian operation
* Supports 32-bit and 64-bit PROCESSORS
* Support for network bootstrap. Network protocols supported
include IP,ARP,ICMP,UDP,DHCP,TFTP.
* Support for disk bootstrap.
* Provides an external API for boot loaders and startup programs
* Simple user interface. UI is easy to remove for embedded apps.
MicroPROCESSORS are getting smaller, cheaper and faster. Every day, it is easier to embed more functionality into a smaller space. Embedded PROCESSORS have become pervasive, and as time goes on, more and more functions that were once implemented with analog circuitry or with electromechanical assemblies are being realized with microcontrollers, ADCs and DACs. Many of these assemblies that are being supplanted by the microprocessor are controlling dynamic processes, which is a good thing, because the microprocessor coupled with the right software is often the superior device.
The design and manufacturing of wireless radio frequency (RF) transceivers has developed rapidly in recent ten
yeas due to rapid development of RF integrated circuits and the evolution of high-speed digital signal
PROCESSORS (DSP). Such high speed signal PROCESSORS, in conjunction with the development of high resolution
analog to digital converters and digital to analog converters, has made it possible for RF designers to digitize
higher intermediate frequencies, thus reducing the RF section and enhancing the overall performance of the RF
section.
Engineers are professional inventors, researchers, and developers. Education imbues each engineer
with discipline-specific knowledge. Combining the different disciplines allows engineers to solve
more complex problems.
