Avago Technologies LSI53C120 - Manual (Page 11)

LSI20101/LSI20102 SCSI Bus Boards 3
•
Maximum dew point temperature: 32
°
C
•
Storage Temperature
– Temperature range: –45
°
C to +105
°
C (dry bulb) 10
°
C per hour
– Relative humidity range: 0% to 90% noncondensing
1.5 Electromagnetic Compliance
The boards minimize electromagnetic emissions, susceptibility to radio
frequency energy, and the effects of electromagnetic discharge. The
boards meet the emission requirements of CISPR II, VCCI, and FCC
Class B as well as the immunity requirements for CE mark, and carry the
CE logo.
1.6 Safety Characteristics
The bare boards meet or exceed the requirements of UL flammability
rating 94 V0. The bare boards are also marked with the supplier’s name
or trademark, type, and UL flammability rating. All voltages these boards
use are below the SELV 42.4 V limit.
1.7 Performance Characteristics
The SCSI interface operates at a burst transfer rate of up to 40 Mbytes/s
for wide SCSI. Actual transfer rates are a function of the attached SCSI
host system and SCSI target devices.
1.8 Compatibility
The SCSI interface is compatible with the ANSI standard X3T9.2.
1.9 Operational Characteristics
The LSI20101/2 boards are designed for computer systems needing
electrical isolation using extension or conversion of the SCSI bus. The
operation is logically transparent to software, data, and bus protocol
operations. It uses no software code and does not use a SCSI ID. The
LSI53C120-based boards pass data and parity from a source bus to a
load bus. The simplest model is that the LSI53C120 is just pieces of wire
that allow corresponding SCSI signals to flow from side to side.