VMIC VMIVME-5550
Specifications
Access Time
360 ns (worst-case arbitration); 200 ns (best-case arbitration)
Cable Length
1,000 ft maximum
Cable Requirements
Two 64-conductor twist-n-flat ribbon cables. A wide variety of standard lengths are available.
Configuration
Linear with up to 16 nodes
Memory Size
256 Kbyte, 512 Kbyte, 1 Mbyte, 2 Mbyte, or 4 Mbyte
MTBF
104,500 hours (217F)
Power Requirements
7.0 A maximum at +5 VDC
Relative Humidity
20 to 80 percent, non-condensing
Temperature Range
0 to 55 °C, operating; -40 to 85°C, storage
Transfer Rate
20 Mbyte/s (longword accesses); 10 Mbyte/s (word accesses); 5 Mbyte/s (byte accesses)
Features
- A24:A32:D32:D16:D8 memory access
- A24:A32:D8 status and control access
- Any node on the network can generate an interrupt in any other node on the network or in all network chassis simultaneously
- Data transferred at 20 Mbyte/s (50-foot cable)
- Data written to memory in one node is also written to memory in all nodes on the network
- Differential line drivers and receivers
- High-speed, easy-to-use parallel network
- Multidrop capability (up to 16 nodes)
- No processor involvement in the operation of the network
- No processor overhead
- Single 6U board
- Up to 4 Mbyte of Reflective Memory
Datasheet
Extracted Text
VMIVME-5550 Multidrop Reflective Memory with Interrupts • High-speed, easy-to-use parallel network • Data written to memory in one node is also written to memory in all nodes on the network • Multidrop capability (up to 16 nodes) • Data transferred at 20 Mbyte/s (50-foot cable) • Any node on the network can generate an interrupt in any other node on the network or in all network chassis simultaneously • No processor overhead • No processor involvement in the operation of the network • Up to 4 Mbyte of Reflective Memory • Differential line drivers and receivers • A24:A32:D32:D16:D8 memory access • A24:A32:D8 status and control access • Single 6U board INTRODUCTION — VMIVME-5550 is a high-performance multidrop VME-to-VME network. Data is transferred by writing to on-board global RAM. The data is automatically sent to the location in memory on all Reflective Memory boards on the network (refer to Figure 1). POWER REQUIREMENTS SPECIFICATIONS 7.0 A maximum at +5 VDC Memory Size: 256 Kbyte, 512 Kbyte, 1 Mbyte, 2 Mbyte, or 4 Mbyte PHYSICAL/ENVIRONMENTAL Temperature Range: 0 to 55 ˚C, operating Access Time: -40 to 85 °C, storage 360 ns (worst-case arbitration) 200 ns (best-case arbitration) Relative Humidity: 20 to 80 percent, noncondensing TRANSFER SPECIFICATION MTBF: 104,500 hours (217F) Transfer Rate: 1 20 Mbyte/s (longword accesses) 1 10 Mbyte/s (word accesses) 1 5 Mbyte/s (byte accesses) Ordering Options COMPATIBILITY June 18, 2001 800-005550-000 H ABC – D E F VMIVME-5550 –0 – This product complies with the VMEbus specification A = Memory Options (ANSI/IEEE STD 1014-1987, IEC 821, and IEC 297), 0 = 256 Kbyte 1 = 512 Kbyte with the following mnemonics: 2 = 1 Mbyte A32:A24:A16: D32/D16/D08 (EO): 3 = 2 Mbyte 4 = 4 Mbyte Slave: 39/3D:09/0D B = FIFO Option Form factor: 6U 0 = 512 Transfer FIFO 1 = 4 Kbyte Transfer FIFO C = 0 (Option reserved for future use) INTERCONNECTION Connector Data Compatible Connector Panduit No. 120-964-435 Cable Requirements: Two 64-conductor twist-n-flat Strain Relief Panduit No. 100-000-072 ribbon cables. A wide variety of standard lengths are PC Board Connector Panduit No. 120-964-033A available. Note Panduit it also known as ITW/Pancon. Cable Length: 1,000 ft maximum For Ordering Information, Call: 1-800-322-3616 or 1-256-880-0444 • FAX (256) 882-0859 E-mail: info@vmic.com Web Address: www.vmic.com Configuration: Linear with up to 16 nodes Copyright © April 1990 by VMIC Specifications subject to change without notice. 1. Network transfer rate with a total cable length of 5 feet. VMIC • 12090 South Memorial Parkway • Huntsville, Alabama 35803-3308 1 VMIVME-5550 DATA TRANSFERS INTERRUPT TRANSFERS — In addition to transferring data between nodes, the VMIVME-5550 will Data written into the Reflective Memory is broadcast to allow any processor in any chassis to generate a VMEbus all nodes on the network without further involvement of interrupt on any other chassis. These interrupts would the sending or receiving nodes. Data is transferred from generally be used to indicate to the receiving chassis that new memory locations on the sending nodes to data has been sent and is ready for processing. These corresponding memory locations on the receiving nodes. interrupts are also used to indicate that processing of old data is completed and the receiving chassis is ready for new data. A functional block diagram of the VMIVME-5550 is shown in Figure 2. Three interrupts are available. The user may define the function, priority, and vector for each interrupt. Any processor can generate an interrupt on any other VMEbus on PRODUCT OVERVIEW — The Reflective Memory the network on which the same interrupt is not already concept provides a very fast and efficient way of sharing data pending. In addition, any processor on the network can across distributed VMEbus computer systems. generate an interrupt on all VMEbuses on the network VMIC’s VMIVME-5550 Reflective Memory interface simultaneously. Interrupts are generated by simply writing to allows data to be shared between up to 16 independent a single VMIVME-5550 register. VMEbus systems (nodes) at rates up to 20 Mbyte/s. Each ERROR DETECTION AND RECOVERY — When Reflective Memory board may be configured with 256 Kbyte Node 0 detects that there has been no activity on the link for to 4 Mbyte of on-board SRAM. The local SRAM provides more than 5 µs, it takes control of the link and passes control fast Read access times to stored data. Writes are stored in to the next node in the round robin sequence. As a result, local SRAM and broadcast over a high-speed parallel data node failures or nodes with power loss (except Node 0) will bus to other Reflective Memory nodes. The transfer of data not prevent the link from operating. between nodes is software transparent, so no I/O overhead is required. Transmit and Receive FIFOs buffer data during It is possible for the output buffer to become full. An peak data rates to optimize CPU and bus performance to interrupt is available to signal the buffer is half full. A bit in maintain high data throughput. a Status Register is also available to indicate when the buffer is full. The user can use any combination of the facilities to The Reflective Memory also allows interrupts to one or prevent overfilling the buffer. An attempt to write to the more nodes by writing to a byte register. VMIVME-5550 memory when the output buffer is full will These interrupt (three level, user definable) signals may result in the generation of BERR to prevent data loss. be used to synchronize a system process, or used to follow Table 1. Recommended Data Rate Versus Cable any data that may have preceded it. The interrupt always Length follows the data to ensure the reception of the data before the interrupt is acknowledged. Data Rate Data Rate 1 Mbyte, 512 Kbyte, and 256 Kbyte VMIVME-5550 Transfers/s Bytes/s Length (32-bit Cable boards may be intermixed on the same link since all of these (32-bit Cable (feet) Transfers) options pass a 1 Mbyte relative address across the link. The 4 Transfers) and 2 Mbyte VMIVME-5550 boards should not be mixed 0 to 50 5 M longwords 20 Mbyte with the 1 Mbyte, 512 Kbyte, or 256 Kbyte since they pass a 4 Mbyte relative address across the link. The 4 and 2 Mbyte 50 to 100 2.5 M longwords 10 Mbyte VMIVME-5550 boards may be intermixed on the same link. 101 to 250 1.25 M longwords 5 Mbyte LINK ARBITRATION — Node addresses are set by on-board jumpers and may be read in the Status Register. 251 to 1,000 .625 M longwords 2.5 Mbyte Node 0 is the network arbiter. Control of the link is passed from the Node 0 to all other nodes on the network in a round robin fashion. As each node receives control of the link, it broadcasts all data written to its memory since the last time it TRADEMARKS had control of the link. This data is contained in the node’s output buffer. After the entire contents of the output buffer is The VMIC logo is a registered trademark of VMIC. broadcast, control of the link is passed back to Node 0. Node Other registered trademarks are the property of their 0 then broadcasts the contents of its output buffer and passes respective owners. control to the next node on the link. 2 For Ordering Information, Call: 1-800-322-3616 or 1-256-880-0444 • FAX (256) 882-0859 VMIVME-5550 C M 5 I I I 5 5 P E 5 / / / 5 5 U M O O O 0 5 5 0 5 5 5 5 0 0 VME CHASSIS VME COMPUTER* WORKSTATION* VME COMPUTER* NODE 0 NODE 1 NODE 2 NODE 16 * Nodes can be VMEbus-based computers or computers with VMEbus I/O channels, such as Sun, Harris Night Hawk, Concurrent, Silicon Graphics, Data General, Motorola Delta Series, Encore 91 Series, and VMEbus chassis, etc. Figure 1. Typical Network Using Reflective Memory VMIC • 12090 South Memorial Parkway • Huntsville, Alabama 35803-3308 3 VMIVME-5550 BROADCAST CABLE 60 DIFFERENTIAL PAIR DIFFERENTIAL RCVR/DRVR 4 Kbyte 4 Kbyte INT1 DEEP DEEP 7 LINES BIM • OUT IN • INT INT7 5 LINES FIFO FIFO CTRL CTRL CTRL IACK ADDR BIM CTRL IACK* FIFO/RCV CTRL 17 CS IACK IN* RAM CTRL VMEbus WR IACK OUT* LOGIC DECODE RAM CONTROL CONTROL SIGNALS AND (256 Kbyte x 8) SELECT LINES ADDR or LATCH 31 LINES (1 M x 8) VME ADDR A1 TO A31 22 LINES ENABLE/DIR 32 LINES VME VME 32 LINES DATA BUS DATA D31 TO D0 BUS BUFFER Figure 2. VMIVME-5550 Functional Block Diagram 4 For Ordering Information, Call: 1-800-322-3616 or 1-256-880-0444 • FAX (256) 882-0859
Frequently asked questions
How does Industrial Trading differ from its competitors?

Is there a warranty for the VMIVME-5550?

Which carrier will Industrial Trading use to ship my parts?

Can I buy parts from Industrial Trading if I am outside the USA?

Which payment methods does Industrial Trading accept?

Why buy from GID?

Quality
We are industry veterans who take pride in our work

Protection
Avoid the dangers of risky trading in the gray market

Access
Our network of suppliers is ready and at your disposal

Savings
Maintain legacy systems to prevent costly downtime

Speed
Time is of the essence, and we are respectful of yours
Related Products

VMIC VMIMB1-5576 Reflective Memory Module - Multibus I Fiber-Optic Reflective Memory with Interrupts...
What they say about us
FANTASTIC RESOURCE
One of our top priorities is maintaining our business with precision, and we are constantly looking for affiliates that can help us achieve our goal. With the aid of GID Industrial, our obsolete product management has never been more efficient. They have been a great resource to our company, and have quickly become a go-to supplier on our list!
Bucher Emhart Glass
EXCELLENT SERVICE
With our strict fundamentals and high expectations, we were surprised when we came across GID Industrial and their competitive pricing. When we approached them with our issue, they were incredibly confident in being able to provide us with a seamless solution at the best price for us. GID Industrial quickly understood our needs and provided us with excellent service, as well as fully tested product to ensure what we received would be the right fit for our company.
Fuji
HARD TO FIND A BETTER PROVIDER
Our company provides services to aid in the manufacture of technological products, such as semiconductors and flat panel displays, and often searching for distributors of obsolete product we require can waste time and money. Finding GID Industrial proved to be a great asset to our company, with cost effective solutions and superior knowledge on all of their materials, it’d be hard to find a better provider of obsolete or hard to find products.
Applied Materials
CONSISTENTLY DELIVERS QUALITY SOLUTIONS
Over the years, the equipment used in our company becomes discontinued, but they’re still of great use to us and our customers. Once these products are no longer available through the manufacturer, finding a reliable, quick supplier is a necessity, and luckily for us, GID Industrial has provided the most trustworthy, quality solutions to our obsolete component needs.
Nidec Vamco
TERRIFIC RESOURCE
This company has been a terrific help to us (I work for Trican Well Service) in sourcing the Micron Ram Memory we needed for our Siemens computers. Great service! And great pricing! I know when the product is shipping and when it will arrive, all the way through the ordering process.
Trican Well Service
GO TO SOURCE
When I can't find an obsolete part, I first call GID and they'll come up with my parts every time. Great customer service and follow up as well. Scott emails me from time to time to touch base and see if we're having trouble finding something.....which is often with our 25 yr old equipment.
ConAgra Foods