Lsi 20160 Manual de usuario descargar pdf (Pagina 14)

1-2 Describing the LSI20160

The LSI53C1000 contains a SCSI SCRIPTS™ processor that permits

both DMA and SCSI commands to be fetched from host memory or

internal SCRIPTS RAM. Algorithms written in SCSI SCRIPTS control the

actions of the SCSI and DMA cores. The SCRIPTS processor executes

complex SCSI bus sequences independently of the host CPU.

In addition to this guide there is another reference that you will ﬁnd

useful. The LSI Logic PCI Storage Device Management System

SDMS 4.0 User’s Guide contains product information and installation

instructions.

1.2 Features

This section provides an overview of the PCI interface, the SCSI

interface, and board characteristics for the LSI20160.

1.2.1 PCI Interface

The PCI interface operates as a 32-bit DMA bus master, where the

connection is made through the J1 edge connector.

The PCI interface includes these features:

• Complies with PCI Local Bus Speciﬁcation, Revision 2.2

• Complies with PC99

• Complies with PCI Bus Power Management Speciﬁcation,

Revision 1.1

• Supports 32-bit 33 MHz word data bursts with variable burst lengths

• Bursts 4/8, 8/16, 16/32, or 32/64 Qword/Dword transfers across the

PCI bus

• Bursts up to 264 Mbytes/s (@ 33 MHz) with zero wait-state bus

master data

• Supports the PCI Cache Line Size (CLS) register

• Prefetches up to 8 Dwords of SCRIPTS instructions

• Supports PCI Write and Invalidate, Read Line, and Read Multiple

commands

• Supports universal 3.3 V and 5 V PCI bus signaling environment

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Lsi 20160 Manual de usuario Pagina 14