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Rx-URME-007     Rev -     -2

- Preliminary - 

PMC665 Hardware Reference and Installation Manual

Page 7

registers, load/store memory access, etc.  In addition, the i960 features a “register stack”
mechanism that maintains initial interrupt response on chip, which improves performance and
determinism.

The co-processor can initiate all transaction types on each of the three buses.

Included in the bridge/co-processor are the DMA engines (described earlier), several counter/
timers to support time based event activity of the firmware and an interrupt multiplexer/handler for
responding to the Ethernet controllers.  Both register and message based interfaces to the host
processor are available, allowing support of a variety of control paradigms.  This greatly simplifies
integrating the PMC665 into some existing software environments, while preserving the ability to
develop higher performance complex message based controls.

Integrating the processor and bridge has the useful side effect of exposing most of the control
logic to the host processor (mapped into the PCI Configuration space and optionally the memory
space of the host).  This creates the option for a continuum of control distribution, between the
host and co-processor.  The PMC665 can be configured such that the:

bridge/co-processor functions primarily as a bridge, with control local to the host

with one Ethernet under control of the host, the other by the co-processor or 

with all low level control resident in the co-processor

How the PMC665 responds to PCI configuration requests from the host can be altered by on-
board firmware.  Upon power-up (or reset), the on-board processor performs a Built-In-Test (BIT)
sequence of the internal (Bridge/co-processor) operation, local memory subsystem and Ethernet
controllers.  Results are available to the host via configuration registers.  During the BIT, the co-
processor loads firmware from the FLASH device.  It is this firmware that controls how the
PMC665 behaves in relationship to the host and the Ethernet interfaces.  The on-board FLASH is
512Kbytes; 128Kbyte is reserved for customer-specific configuration parameters.  It is possible to
update the FLASH contents either from the host, or (with appropriate on-board firmware loaded)
over the Ethernet. 

The switch is set at the factory for different modes of operations: with processor enabled or
disabled.  If enabled, the processor will load firmware from on card flash and begin execution.  If
Disabled, the processor will be held in reset.  In this condition the PCI bridge functions remain
operational, the PMC665 can be treated as an unintelligent dual network card.

3.0.4

Ethernet Controllers

The Ethernet Controllers on the PMC665 have enjoyed several years of active evolution, featuring
improvements at both the PCI bus and Ethernet interface.  Each controller is a fully independent
unit, with local FIFO buffers to decouple PCI and Ethernet activity.  Decoupling the Ethernet and
PCI ensures that data transfers will meet the timing requirements of each transaction (which is of
particular importance on the Ethernet) regardless of the loading on the other bus interface.  These
FIFO buffers are sufficiently deep to support good burst transfers and presenting minimum
overhead to the PCI bus.  When doing data transfer on the PCI bus the Ethernet DMA engine will
attempt to maximize the length of burst transactions, which is critical to obtain the potential
bandwidth of the PCI protocol.  These properties allow sustained full bandwidth transfers on both
Ethernet ports.

3.0.5

Fiber Connections

The PMC665 uses two Dual Transceivers with SC style connectors, and PMC665A uses the ST
style connectors.  The Transceivers are fully compliant with the standards defined by the Feast

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Содержание PMC665

Страница 1: ...l service in house repair center WE BUY USED EQUIPMENT Sell your excess underutilized and idle used equipment We also offer credit for buy backs and trade ins www artisantg com WeBuyEquipment REMOTE INSPECTION Remotely inspect equipment before purchasing with our interactive website at www instraview com LOOKING FOR MORE INFORMATION Visit us on the web at www artisantg com for more information on ...

Страница 2: ...ion Manual 1672 Donlon Street Ventura CA 93003 U S A Tel 805 650 2111 FAX 805 650 2110 Customer Support E mail support ramix com Document ID Rx URME 007 Revision Rev Issue Date April 25 2001 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 3: ...y is labeled Return or Enter depending on your keyboard CTRL X While you hold down the Ctrl key press any other key RAMiX monitor commands are case sensitive You must enter commands in the correct case as printed in the text Courier type Indicates examples of system output or user input Italics In commands and examples italics indicate a value e g the name of a file that you should supply Square b...

Страница 4: ...res The PMC665 complies with the CMC specification for PCI Mezzanine Cards commonly known as PMC As such it will directly connect to any Single Board Computer SBC or Expansion Card that supports PMC modules All initialization and functional configuration of the PMC665 is done automatically by software Features implemented on the PMC665 include Two independent 100Mbit Ethernet controllers drive sep...

Страница 5: ... PMC665 module from shipping carton Check to verify that all items are present by referring to the packing list 2 2 1 Included Items Each PMC665 is shipped with the following items PMC665 PMC Assembly 2 3 Handling Electronic assemblies use devices that are sensitive to static discharge this applies to both the PMC665 and the host board on to which it will be mounted Observe anti static procedures ...

Страница 6: ...sure the connectors J1 and J2 are positioned properly 4 Use the four screws to connect the PMC665 stand offs to the host PCB 2 5 Connection to the Local Network Media The PMC665 has two fiber transceiver connections on the front panel one for each Ethernet channel Connection is made using industry standard fiber cables 2 6 POINT to POINT Operation Two PMC665 modules may be connected back to back f...

Страница 7: ... consume no bandwidth on the Host PCI It is this isolation that allows the PMC665 to perform arbitrary manipulation filter etc of data from the Ethernet without compromising the host system performance The Co processor Bridge controller contains DMA engines with FIFO buffers to each of the busses This is a critical factor as the actual opposed to theoretical bandwidth of a PCI bus decreases dramat...

Страница 8: ...figuration registers During the BIT the co processor loads firmware from the FLASH device It is this firmware that controls how the PMC665 behaves in relationship to the host and the Ethernet interfaces The on board FLASH is 512Kbytes 128Kbyte is reserved for customer specific configuration parameters It is possible to update the FLASH contents either from the host or with appropriate on board fir...

Страница 9: ...g data to move directly from host PCI and by inference the host memory system to the Ethernet can reduce transfer latencies Note Direct data transfer is not a requirement for sustaining maximum performance The 100 Mbytes per second bandwidth of each of the busses on the PMC665 combined with their independent operation provides substantial margin in store filter and forward operations Thus implemen...

Страница 10: ...ve Transmit Link Receive Bottom Ports Top Ports Primary Transmit Link Receive Bottom Ports Transmit Link Receive Top Ports Primary PMC665 RX PMC665ST R 1 TX RX TX 2 PMC665ST R Transmit Link Receive Transmit Link Receive Top Ports Primary Bottom Ports Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 11: ...SI X 3166 1990 Compatibility IEEE1386 IEEE802 3 ANSI 8802 3 Interface PCI Revision 2 1 Size IEEE1386 Standard Single PMC Drivers VxWorks pSOS Lynx Digital UNIX Windows NT Contact RAMiX for additional software support information Temperature Operating Storage 0 C to 60 C 40 C to 85 C Power Requirements Power Max Power Max 1 5A 3 3V typical 1 3A 3 3V 300mA 5V typical 210mA 5V Artisan Technology Grou...

Страница 12: ...l service in house repair center WE BUY USED EQUIPMENT Sell your excess underutilized and idle used equipment We also offer credit for buy backs and trade ins www artisantg com WeBuyEquipment REMOTE INSPECTION Remotely inspect equipment before purchasing with our interactive website at www instraview com LOOKING FOR MORE INFORMATION Visit us on the web at www artisantg com for more information on ...

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