Appendix B-8 MSC8101 User’s Guide
Glossary
FCC
Fast communications controllers. A type of serial communications
controller (SCC) optimized for synchronous high-rate protocols.
MSC8101 FCCs can be configured independently to implement
different protocols. Together, they can implement bridging functions,
routers, and gateways; they can interface with a wide variety of
standard WANs, LANs, and proprietary networks. FCCs have many
physical interface options, such as interfacing to TDM buses, ISDN
buses, standard modem interfaces, fast Ethernet interface (MII), and
ATM interfaces (UTOPIA). The FCCs are independent from the
physical interface, but FCC logic formats and manipulates data from
the physical interface. That is why the interfaces are described
separately. The FCC is described in terms of the protocol that it runs.
When an FCC is programmed to a certain protocol, it implements a
certain level of functionality associated with that protocol. For most
protocols, this corresponds to portions of the link layer (layer 2 of the
seven-layer OSI model). Many FCC functions are common to all
protocols.
FC-PBGA
package
Flip Chip-Plastic Ball Grid Array. The MSC8101 FC-PBGA package
has 332 pins.
FDMA
Frequency division multiple access. A method of allowing multiple
users to share the radio frequency spectrum by assigning each active
user an individual frequency channel. In this practice, users are
dynamically allocated a group of frequencies so that the apparent
availability is greater than the number of channels.
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