AT&T 3B2/300 Technical Reference Manual page 442

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CM195AE GPSC CARD
General
The CMl 95AE General Purpose Synchronous Controller (GPSC) Card provides two physical
interfaces for synchronous data transmission. The card is capable of providing simultaneous
full-duplex, full-occupancy data transmission at rates up to 64K bits per second. The output connectors
contain the required signals to support a variety of industry standard electrical interfaces. Separate
cables provide the electrical connections for the desired interface (see Appendix B). Figure 3-59 shows
the functional block diagram of a CMl 95AE GPSC Card.
GPSC Card Features
The major components of the GPSC card are listed below.
• An INTEL 80186 Microprocessor
• Bus interface circuitry
• 768K bytes of Dynamic Random Access Memory (DRAM)
• Up to 32K bytes of Erasable Programmable Read Only Memory (EPROM)
• Dual Port Arbiter/Controller and Support Logic.
FUNCTIONAL DESCRIPTION 3-189