am79c960 Advanced Micro Devices, am79c960 Datasheet - Page 2

• Manufacturer Part Number: am79c960
• Description: Pcnettm-isa Single-chip Ethernet Controller
• Manufacturer: Advanced Micro Devices

The PCnet-ISA controller is designed to directly inter-
face with the ISA or EISA system bus. It contains an ISA
bus interface unit, DMA Buffer Management Unit, IEEE
802.3 Media Access Control function, individual
136-byte transmit and 128-byte receive FIFOs, IEEE
802.3 defined Attachment Unit Interface (AUI), and a
Twisted Pair Transceiver Media Attachment Unit. The
PCnet-ISA controller is also register compatible with the
LANCE (Am7990) Ethernet controller. The DMA Buffer
Management Unit supports the LANCE descriptor soft-
ware model. External remote boot and Ethernet
physical address PROMs are also supported.
This advanced Ethernet controller has the built-in capa-
bility of automatically selecting either the AUI port or the
Twisted Pair transceiver. Only one interface is active at
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Description
Twisted Pair Ethernet Transceiver (TPEX)
Twisted Pair Ethernet Transceiver Plus (TPEX+)
IEEE 802.3/Ethernet/Cheapernet Transceiver
Integrated Multiport Repeater Plus
Hardware Implemented Management Information Base
Media Access Controller for Ethernet (MACE )
Local Area Network Controller for Ethernet (LANCE)
CMOS Local Area Network Controller for Ethernet (C-LANCE)
Integrated Local Area Communications Controller
PCnet-ISA
PCnet-32 Single-Chip 32-Bit Ethernet Controller
PCnet-PCI Single-Chip Ethernet Controller (for PCI bus)
PCnet-SCSI Combination Ethernet and SCSI Controller for PCI Systems
+
Single-Chip Ethernet Controller for ISA (with Microsoft Plug n’ Play Support)
P R E L I M I N A R Y
(IMR+ )
Am79C960
any one time. The individual 136-byte transmit and
128-byte receive FIFOs optimize system overhead, pro-
viding sufficient latency during packet transmission and
reception, and minimizing intervention during normal
network error recovery. The integrated Manchester en-
coder/decoder eliminates the need for an external Serial
Interface Adapter (SIA) in the node system. If support
for an external encoding/decoding scheme is desired,
the embedded General Purpose Serial Interface (GPSI)
allows direct access to/from the MAC. In addition, the
device provides programmable on-chip LED drivers for
transmit, receive, collision, receive polarity, link integ-
rity, or jabber status. The PCnet-ISA controller also
provides an External Address Detection Interface
(EADI ) to allow external hardware address filtering in
internetworking applications.
(ILACC )
(HIMIB )