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Appendix C

Hardware Specifications

Mechanical Specifications

PC-AT Board

The MC1 board is a 8" x 4.5" PC-AT board. The board occupies one 8 bit slot in the computer chassis. MVIP-90 Bus Connector
The MVIP-90 bus connector is a shrouded 40-pin 3M 2540-50020B, positioned as specified in Section 3 of the MVIP Reference Manual, Version 1.0. Electrical Specifications Host Interface Electrical PC-AT bus designed to IEEE P966 ISA Mechanical Designed to IBM's specification (PC-AT Prototype Adaptor Reference Manual #6361674) Bus Speed 4-8 MHz I/O Base Address Switch selectable to any of 16 I/O addresses Power Requirements Supply Voltage: Current: +5 DC 1.1A Environment Operating Temperature 0 - 50 deg C Storage Temperature -20 to 70 deg C Humidity 5% to 80%, non-condensing Clocking MC1_8K (8KREF) clock line jitter must be less than 60 nanoseconds, peak to peak MVIP-90 Compliant Interface · Switchable access to any of 512 MVIP-90 timeslots. · MVIP-90 clock master or clock slave (software-selectable). · Able to terminate the MVIP-90 bus (jumper-selectable). · Compatible with any MVIP-90 compliant telephony interface. Connectors
This section describes the pinouts and signals for the bus connectors on the MC1 board. PC-AT Bus
Pinouts and signals of the PC-AT bus follow IEEE P966 ISA specifications. MVIP Bus
Pinouts and signals of the MVIP bus follow specifications in Section 3 of the MVIP Reference Manual, Version 1.0. MC1 Bus
Pinouts and signals of the MC1 bus follow specification in sections 5 and 6 of the MC1 Multi-Chassis MVIP Standard, Release 1.0.
The back panel contains a 68 pin female SCSI-3 type connector.

Electrical	PC-AT bus designed to IEEE P966 ISA
Mechanical	Designed to IBM's specification (PC-AT Prototype Adaptor Reference Manual #6361674)
Bus Speed	4-8 MHz
I/O Base Address	Switch selectable to any of 16 I/O addresses

Supply Voltage:	Current:
+5 DC	1.1A

Operating Temperature	0 - 50 deg C
Storage Temperature	-20 to 70 deg C
Humidity	5% to 80%, non-condensing
Clocking	MC1_8K (8KREF) clock line jitter must be less than 60 nanoseconds, peak to peak

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