Houses Eight MULTIBUS® ISBC® Boards in an Aluminum Package
Enhanced Bus Noise Immunity for High • Speed Systems
Board-to-Board Clearance for iSBC® MULTIMODULETM Boards on A" Slots
• • • ISBC®
Plug on iSBC 618 Unit for up to Sixteen Board Systems
Board-ta-Board Clearance for ISBXTM MULTIMODULETM Boards on Two Slots
NEMA-Type Backwa" or 19-1nch Rack Mount Hardware Included
Para"el Priority Circuitry for up to Eight Multlmaster ISBC® Boards
Signal Line Termination Circuitry on 608 Cardcage
Intel's iSBC 608/618 Cardcages are matched to the latest generation of iSBC/iSBX boards which mount in the MULTIBUS system bus. These products provide several features which make them the industry's leading price/performance cardcage product. MULTIMODULE board clearance, parallel priority circuitry, enhanced backplane noise immunity, and precision fit card guides are a few of the distinctions which make this the industry's better product. The iSBC 608 Cardcage is the base unit, housing up to eight iSBC boards and their MULTIMODULE boards. Additionally, this base unit includes mounting hardware and fan mounting bracketry. The iSBC 618 is the expansion unit, providing eight additional iSBC board slots to the iSBC 608 Cardcage for a total of sixteen board slots which can be NEMA-type backwall or 19-inch rack mounted. This is accomplished with the mounting hardware of the iSBC 608 Cardcage. The iSBC 618 expansion unit also includes fan mounting bracketry.
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November 1986 Order Number: 210373·001
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iSBC® 608/618 CARDCAGES
FUNCTIONAL DESCRIPTION
Mechanical Aspects The iSBC 608/618 Cardcages provide housing and a MULTIBUS system bus for up to sixteen single board computers and their MULTIMODULE boards. The iSBC 608 unit and iSBC 618 unit offer board-toboard clearance (0.8 inches or greater) on all eight slots for iSBC MULTIMODULE boards. Two slots provide clearance (1.2 inches or greater) for iSBX MULTIMODULE boards as shown in Figure 1. Each card cage includes precision fitted nylon cardguides for secure board fit and accurate MULTIBUS board pin alignment. Fan mounting bracketry is.also included with each cardcage. This bracketry allows the mounting of several industry standard fans. The iSBC 608 Cardcage base unit includes aluminum mounting hardware for NEMA-type backwall mounting, or anchoring a sixteen slot iSBC 608/618 combination in a standard 19-inch rack.
connections. There are six different priority schemes allowed, each requiring a different jumper configuration. In systems where an iSBC 618 Cardcage is attached to the base unit, the base unit will have lower priority overall. That is, master boards in the iSBC 608 base unit bay gain control of the MULTIBUS lines only when no boards in the iSBC 618 expansion unit are asserting the bus request (BREOI) signal. Noise-minimizing ground traces are strategically interleaved between signal and address lines on these backplanes. This provides the enhanced noise immunity and minimized signal-to-signal coupling which is important in high speed, high board count microcomputer systems. The iSBC 608/618 Cardcages provide power connector lug bolts for + 5 VDC and ground. The lug bolts, compared to other power connection methods, help transfer higher amounts of current. Other voltages (± 12 VDC, - 5 VDC) are connected via a mating power connector plug as shown in Figure 2.
Electrical Aspects The iSBC 608/618 Cardcages implement a parallel priority resolution scheme by using plug-in jumper
SPECIFICATIONS Bus Lines All MULTIBUS (IEEE 796) system bus address and command lines are bussed to each of the eight MULTIBUS connectors on the backplane. Ground traces are interleaved among these signal lines and bussed to the backplane edge connector for interconnection of the iSBC 608 and iSBC 618 backplane.
Operating Temperature: Storage Temperature: Humidity: . Vibration and Shock:
O°C to 55°C -40°C to + 85°C 50% to 95% non-condensing at 25°C to 40°C. 2G max. through 50 Hz
Physical Characteristics SLOT-TO-SLOT DIMENSIONS (See Figure 1)
Power Connectors Ground (OV), + 5V, - 5V, + 12V, -12V power supply header stakes and power lug bolts are provided on the iSBC 608/618 Cardcages as shown in Figure 2.
Top-J1: J1-J2: J8-Bottom: All Others:
1.200 1.300 0.700 0.800
in. (to center) in. (center to center) in. (to center) (center to center)
8.38 in. (21.29 cm) 13.16 in. (33.43 em) 7.50 in. (19.05 cm) 3.50 Ibs (1.59 kg) 5.75 Ibs (2.61 kg)
Equipment Supplied ISBC® 608 BASE UNIT Two at greater than 1.2 inches; six at 0.8 inches For expansion with iSBC Male Backplane 618 cardeage Connector: Parallel Priority Circuitry: Eight slots are configurable via the use of jumper Six priority stakes. schemes allowed Construction Materials: Aluminum card housing Nylon card guides Power connector header stakes and lug bolts Eight Slots:
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Figure 2. Power Header Stakes and Lugs
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iSBC® 608/618 CARDCAGES
Accessories
User-Supplied Equipment
ISBC® 618 EXPANSION UNIT Eight-Slots: Two at greater than 1.2 inches; six at 0.8 inches Female Backplane For expansion to iSBC Connector: . . 608 base unit Parallel Priority Circuitry: Eight slots are configurable via the use of jumper stakes: ' Six priority schemes allowed. Construction Materials: Aluminum card housing Nylon card guides Power connector header stakes and lug bolts Fan Mounting Hardware Schematic
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The iSBC 186/100 Single Board Computer is a member of Intel's family of microcomputer modules that. utilizes the advanced features of the MUL TIBUS® II system architecture. The 80186-based CPU board takes. advantage of VLSI technology to provide eco
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