AM79C961KCW Ver la hoja de datos (PDF) - Advanced Micro Devices

Número de pieza

componentes Descripción

Lista de partido

AM79C961KCW

PCnet™-ISA+ Jumperless Single-Chip Ethernet Controller for ISA

Advanced Micro Devices 

AMD

PRELIMINARY

the integrated DMA controller. This configuration en-

hances system performance by allowing the

PCnet-ISA+ controller to bypass the platform DMA con-

troller and directly address the full 24-bit memory space.

The implementation of Bus Master Mode allows mini-

mum parts count for the majority of PC applications. The

PCnet-ISA+ controller can be configured to perform

Shared Memory operations for compatibility with low-

end machines, such as PC/XTs that do not support Bus

Master and high-end machines that require local packet

buffering for increased system latency.

The PCnet-ISA+ controller is designed to directly inter-

face with the ISA or EISA system bus. It contains an ISA

Plug and Play bus interface unit, DMA Buffer Manage-

ment Unit, 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 Attach-

ment Unit. The PCnet-ISA+ controller is also register

compatible with the LANCE (Am7990) Ethernet control-

ler and PCnet-ISA. The DMA Buffer Management Unit

supports the LANCE descriptor software model.

External remote boot and Ethernet physical address

PROMs and Electrically Erasable 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

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 integrity

and activity, or jabber status. The PCnet-ISA+ controller

also provides an External Address Detection Interface™

(EADI™) to allow external hardware address filtering in

internetworking applications.

RELATED PRODUCTS

Part No.

Am79C98

Am79C100

Am7996

Am79C981

Am79C987

Am79C940

Am79C90

Am79C960

Am79C965

Am79C970

Description

Twisted Pair Ethernet Transceiver (TPEX)

Twisted Pair Ethernet Transceiver Plus (TPEX+)

IEEE 802.3/Ethernet/Cheapernet Transceiver

Integrated Multiport Repeater Plus™ (IMR+™)

Hardware Implemented Management Information Base™ (HIMIB™)

Media Access Controller for Ethernet (MACE™)

CMOS Local Area Network Controller for Ethernet (C-LANCE)

PCnet-ISA Single-Chip Ethernet Controller (for ISA bus)

PCnet-32 Single-Chip 32-Bit Ethernet Controller (for 386, 486, VL local buses)

PCnet-PCI Single-Chip Ethernet Controller (for PCI bus)

1-476

Am79C961

Share Link: