 |
전자부품 데이터시트 검색엔진 |
|
|
전자부품 데이터시트 검색엔진 |
|
AM79C974 데이터시트(PDF) 2 Page - Advanced Micro Devices |
|
||||||||||||||||||||||||||||||
AM79C974 데이터시트(HTML) 2 Page - Advanced Micro Devices |
|
|
2 / 153 page  AMD P R E L I M I N A R Y 2 Am79C974 The PCnet-SCSI is part of AMD’s PCI product family of plug-in and software compatible SCSI and Ethernet controllers. This product compatibility ensures a low cost system upgrade path and lower motherboard manufacturing costs. Ethernet Specific The PCnet-SCSI controller includes a complete Ether- net node integrated into a single VLSI device. It contains a bus interface unit, a DMA buffer management unit, an IEEE 802.3-defined Media Access Control (MAC) func- tion, individual 136-byte transmit and 128-byte receive FIFOs, an IEEE 802.3-defined Attachment Unit Inter- face (AUI) and Twisted-Pair Transceiver Media Attach- ment Unit (10BASE-T MAU), and a Microwire EEPROM interface. The PCnet-SCSI controller is also register compatible with the LANCE (Am7990) Ethernet control- ler, the C-LANCE (Am79C90) Ethernet controller, the ILACC (Am79C900) Ethernet controller, and all Ether- net controllers in the PCnet Family, including the PCnet- ISA controller (Am79C960), the PCnet-ISA+ controller (Am79C961), and the PCnet-32 controller (Am79C965). The buffer management unit supports the LANCE, ILACC, and PCnet descriptor software models. The PCnet-SCSI controller is software compatible with the Novell NE2100 and NE1500 Ethernet adapter card architectures. In addition, a Sleep function has been in- corporated to provide low standby current, excellent for notebooks and Green PCs. The 32-bit multiplexed bus interface unit provides a di- rect interface to the PCI local bus applications, simplify- ing the design of an Ethernet node in a PC system. With its built-in support for both little and big endian byte alignment, this controller also addresses proprietary non-PC applications. The PCnet-SCSI controller supports auto configuration in the PCI configuration space. Additional PCnet-SCSI controller configuration parameters, including the unique IEEE physical address, can be read from an ex- ternal non-volatile memory (serial EEPROM) immedi- ately following system RESET. The controller also has the capability to automatically select either the AUI port or the Twisted-Pair trans- ceiver. Only one interface is active at any one time. The individual transmit and receive FIFOs optimize system overhead, providing sufficient latency during frame transmission and reception, and minimizing intervention during normal network error recovery. The integrated Manchester encoder/decoder (MENDEC) eliminates the need for an external Serial Interface Adapter (SIA) in the system. In addition, the device provides program- mable on-chip LED drivers for transmit, receive, colli- sion, receive polarity, link integrity or jabber status. SCSI Specific The PCnet-SCSI controller also includes a high- performance Fast SCSI controller with a glueless inter- face to the PCI local bus. The PCnet-SCSI integrates its own 32-bit bus mastering DMA engine with an industry standard Fast SCSI-2 block. The DMA engine and ac- companying 96 byte DMA FIFO allow 32-bit burst data transfers across the high bandwidth PCI bus at speeds of up to 132 Mbyte/s. Full support for scatter-gather DMA transfers optimize performance in multi-tasking system applications. The PCnet-SCSI’s on-chip state machine controls SCSI bus sequences in hardware and is coupled with the bus mastering DMA engine to eliminate the need for an on- chip RISC processor. This results in a smaller die size giving the Am79C974 superior price/performance ver- sus competitive offerings. AMD supports the Am79C974 with a total system solu- tion which includes: A full suite of licensable SCSI drivers and utilities fully tested under the following operating system environments: — DOS 5.0 – 6.0 — Windows 3.1 — Windows NT — OS/2 2.x — Netware 3.x, 4.x — SCO UNIX 3.2.4, ODT 2.0 An INT13h Compatible SCSI ROM BIOS ASPI Compatibility Complete hardware reference design kit For more detailed information on the PCnet-SCSI refer to the technical manual, PID #18738A. |
유사한 부품 번호 - AM79C974 |
|
유사한 설명 - AM79C974 |
|
|
링크 URL |
| 개인정보취급방침 |
| ALLDATASHEET.CO.KR |
| ALLDATASHEET 가 귀하에 도움이 되셨나요? [ DONATE ] |
Alldatasheet는? | 광고문의 | 운영자에게 연락하기 | 개인정보취급방침 | 링크교환 | 제조사별 검색 All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Korean ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
