The Abaco Systems (formerly Ramix) PMC421 is an 8-port serial connector module designed for integration into VMEbus or CompactPCI systems. This PMC (PCI Mezzanine Card) module features an onboard CPU to offload host processing, character blocking, and DMA for efficient PCI utilization. It supports software-selectable RS232, RS422, and RS485 communication modes, with each port operating independently. The module offers baud rates ranging from 150 bps to 1.5 Mbps and is compatible with current generation VMEbus and CPCI Single Board Computers, as well as any processor with a PMC connector. For card edge PCI systems, the PMC239 adapter can be used. The PMC421 is noted to have entered a Restricted Production Phase (RPP) as of December 31, 2010.
### Technical Specifications
* **Product Name:** Abaco Systems / Ramix PMC421
* **Product Type:** 8-Port Serial Connector PMC Module
* **Communication Interfaces:** RS232, RS422, RS485 (full and half duplex)
* **Number of Ports:** 8
* **Baud Rate:** 150 bps to 1.5 Mbps (software selectable)
* **Onboard CPU:** Yes, to off-load host processing
* **Data Transfer Features:** Character blocking and DMA for efficient PCI utilization
* **Port Independence:** All ports are fully independent
* **Form Factor:** PMC
* **I/O Options:** Front or Rear I/O
* **PCI Interface:** Revision 2.1 compatible, supporting 33MHz/32bit transactions. Supports both slave and master operation, including DMA engines for long PCI bursts.
* **Onboard Processor:** 32-bit RISC CPU (i960VH) with external bus rate of 33MHz and internal clock rate of 100MHz.
* **Memory:** 4 Mbytes of local DRAM for firmware execution and character data buffering.
* **Firmware:** Loaded automatically from local FLASH memory on power-up. Field upgrades are possible without removing the module.
* **Control:** Processor directly controls UARTs and Signal Drivers for full software configuration.
* **Customization:** Custom firmware options are available for special purpose applications.
* **Compatibility:** Compatible with current generation VMEbus and CPCI Single Board Computers, and any special purpose processor with a PMC connector. PMC239 adapter available for card edge PCI systems.
* **Product Status:** Entered Restricted Production Phase (RPP) on December 31, 2010.
### Interfaces
* **Serial Protocols:** RS232, RS422, RS485 (full and half duplex)
* **Connector Type:** Not explicitly specified in available documentation, but PMC form factor implies standard PMC connectors. Related products suggest SCSI-style or RJ-45 connectors may be used for I/O breakout.
### Physical
* **Form Factor:** PMC (PCI Mezzanine Card)
### Compatibility
* **Host Systems:** VMEbus and CompactPCI systems
* **Single Board Computers:** Compatible with current generation VMEbus and CPCI SBCs
* **Other Processors:** Any special purpose processor with a PMC connector
* **Card Edge PCI Systems:** Requires PMC239 adapter for compatibility
Why Choose Aumictech for Abaco Systems / Ramix PMC421?
At Aumictech, we specialize in supplying high-end embedded computing and communication interface equipment. Whether you need reliable integration of serial communication interfaces into VMEbus or CompactPCI systems, enhanced data throughput via onboard processing and DMA, or flexible RS232/RS422/RS485 connectivity, our team ensures the Abaco Systems / Ramix PMC421 delivers maximum performance for your application.
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