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AIC-7892 데이터시트 PDF




Adaptec에서 제조한 전자 부품 AIC-7892은 전자 산업 및 응용 분야에서
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부품번호 AIC-7892 기능
기능 Single Channel PCI on Ultra160 SCSI Single Chup Host Adapter
제조업체 Adaptec
로고 Adaptec 로고


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AIC-7892 데이터시트, 핀배열, 회로
R
Product Benefits
n Up to 160 MByte/sec data
transfer rates
n 66 MHz, 64-bit, PCI interface that
supports zero wait-state memory;
also operates on 33 MHz, 32-bit
PCI busses
n PC99 compliant
n PCI 2.2 compliant
n Supports up to 15 devices on
a standard cable configuration
up to 12 meters
n Fully compatible with the
AIC-3860 LVD-to-single-ended
transceiver
AIC-7892
Single-Channel PCI-to-Ultra160 SCSI Single-Chip
Host Adapter
Overview
The Adaptec® AIC-7892 single-chip host adapter
provides outstanding performance and flexibility
to meet tomorrow’s requirements today. Ultra160
SCSI delivers data transfer rates up to 160 MByte/sec
to address emerging bandwidth-hungry applications,
such as real-time video, data mining, Internet/
Intranet, and scientific modeling and simulation.
The AIC-7892 chip features a 66 MHz, 64-bit,
PCI interface for next-generation server, work-
station, and high-end desktop systems.
Migration to new Ultra160 SCSI technology
is easy with the AIC-7892. The chip is fully
backward compatible with Ultra2 and earlier
SCSI generations. The chip is available in a
272 Ball Grid Array (BGA) package.
Key Benefits
Increased SCSI Performance
With the AIC-7892, performance takes a giant
leap forward. Ultra160 SCSI technology doubles
Ultra2 data transfer rates – up to 160 MByte/sec.
In addition, the AIC-7892 single-chip host adapter
features a PCI bus interface that supports zero
wait-state memory from 32-bit, 33 MHz to 64-bit,
66 MHz. The 64-bit, 66-MHz interface quadruples
the bandwidth provided by a 32-bit, 33 MHz PCI
interface, from 133 MByte/sec to 533 MByte/sec,
enabling maximum system throughput.
Improved Data Integrity
The AIC-7892 fully supports Ultra160 Cyclic
Redundancy Checking (CRC). CRC detects data
integrity errors that would not be detected by
simple parity checking used by previous SCSI
generations. The higher 160 MByte/sec data rate
achieved on existing Low Voltage Differential
(LVD) cable configurations mandated this
improved data integrity feature.
SCSI Bus Configuration Testing
The AIC-7892 fully supports Ultra160 and
Ultra3 SCSI Domain Validation. Domain
Validation provides SCSI bus configuration
testing to help ensure Ultra160 SCSI devices
operate at optimum speed.
Long Cables
The AIC-7892 supports a maximum of 15
LVD devices on 12 meters of cable. In a
point-to-point configuration, the maximum
cable length extends to 25 meters. The
AIC-7892 is fully compatible with existing
Ultra2 SCSI supported cable configurations.
The cable-length distances provide greater
system configuration flexibility – especially
for clustering and RAID applications.
The AIC-7892 also supports High Voltage
Differential (HVD) busses when used
with external HVD transceivers.
Backward Compatibility
The AIC-7892 incorporates an advanced
multimode I/O cell that supports Ultra2,
Ultra3, and Ultra160 SCSI LVD devices,
as well as single-ended (SE) devices. With
only Ultra2 and Ultra160 devices attached, the
SCSI bus performs at full speed and
full LVD cable lengths. When SE devices
are attached, the bus defaults to SE speed
and cable length.
In mixed environments of LVD and single-
ended devices, the AIC-7892 host adapter
chip can couple with an Adaptec AIC-3860
transceiver chip to bridge the signaling
discontinuity. By dividing the SCSI bus
into independent single-ended and LVD
segments, the AIC-3860 supports legacy
devices without limiting performance or
LVD segment cable length. (see figure)
Ultra160 SCSI uses the same connectors
and cables as Ultra2 and Ultra Wide SCSI,
so upgrading system performance is easy
and cost-effective.





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관련 데이터시트

부품번호상세설명 및 기능제조사
AIC-7892

Single Channel PCI on Ultra160 SCSI Single Chup Host Adapter

Adaptec
Adaptec

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