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Preliminary Spec. ver
1.4
KS8910 100/10 Mbps ETHERNET TRANSCEIVER
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Globally administered address - An Ethernet address whose second bit transmitted, used to distinguish
between locally or globally administered addresses, is set to 0, indicating a globally administered (or U,
universal) address. If an address is to be assigned locally, this bit is set to 1. Note that for the broadcast
address, this bit is also a 1.
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Group address - An Ethernet destination address whose first bit transmitted, used to identify it either as an
individual or as a group address, is 1, indicating that the address field contains a group address that identifies
none, one or more, or all of the stations connected to the local area network. More commonly called a multicast
address. The first byte of a multicast address is odd, for example, 01-00-00-00-00-00. There are two kinds of
multicast address: (a) Multicast-group address. An address associated by higher-level convention with a group
of logically-related stations. (b) Broadcast address. A distinguished, predefined multicast address, ff-ff-ff-ff-ff-ff,
that always denotes the set of all stations on a given local area network.
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HDLC - High-level Data Link Control. Used in X.25.
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Heartbeat - Signal Quality Error (SQE).
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IAB - Internet Activities Board.
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ICMP - Internet Control Message Protocol. The protocol to handle error and control information between
gateways and hosts. TCP/IP networking software, not user processes, generates and processes ICMP
messages.
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IEEE 1149.1 - See JTAG.
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IEEE 802.12 - 100-Mbit/s standard based on demand priority. Also, 100BASE-VG or AnyLAN.
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IEEE 802.3 - Information technology Local and metropolitan area networks Part 3: Carrier sense multiple
access with collision detection (CSMA/CD) access method and physical layer specifications. International
Standard ISO/IEC 8802-3: 1993(E), ANSI/IEEE Std. 802.3, 1993 Edition, July 8, 1993. Also, Ethernet.
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IEEE 802.4 - Token bus.
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IEEE 802.5 - Token ring.
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Individual address - An Ethernet address whose first bit transmitted, used to identify it either as an individual or
as a group address, is 0, indicating that the address field contains an individual address, and so is associated
with a particular station on the network. The first byte of a individual address is even, for example, 00-00-00-00-
00-00.
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IP - Internet Protocol. Fragments (segments), routes, delivers, and reassembles packets for TCP, UDP, and
ICMP. Connectionless and unreliable. Adds a 20-byte header and a check sum.
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ISDN - Integrated Services Digital Network.
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ISO - International Organization for Standardization.
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Jabber - In order to protect the network from babbling nodes, IEEE Std. 803.3 requires MAUs to inhibit
transmission onto the network if they have been transmitting for an excessive time. The window for jabber must
be between 20 and 150 ms.
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JTAG - Joint Test Action Group. A group of companies that developed what became IEEE 1149.1 Test Access
Port... for board-level production test of integrated-circuit pin continuity.
1. Project 802 Local and Metropolitan Area Networks. Draft Guide to ANSI/IEEE Std. 802.3 (CSMA/CS Ac-
cess Method and Physical Layer Specifications). SysTAG Network Guide, Draft 5.2, January 23, 1994.
Section 3.5 False Jabber, page 13.
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APPENDIX
A-3
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