The Communications Company™
BENEFITS
• True PCI multifunction device
provides direct connection from
the PCI bus to two independent
bus mastering Ultra SCSI channels
• One device replaces two,
reducing the number of PCI
bus loads and bus masters in
the system
• Increases throughput up to
twofold for systems that now
operate with single channel SCSI
• High-performance wide Ultra
SCSI solution based on the
proven technology of the
LSI53C875 controller
FEATURES
• Two independent DMA channels
with internal programmable
arbitration
• Motherboard or host adapter
solution — BIOS can be stored
in system, or in local EPROM or
FLASH memory
• LSI Logic provides complete
software support with BIOS
and drivers
• Allows custom driver development
with LSI Logic SCSI SCRIPTS
™
• 208-pin PQFP or 256-pin
BGA package
• Supports IEEE 1149.1 JTAG
boundary scan for improved
testability
• Compliant with Microsoft
®
PC99
PCI-DUAL CHANNEL ULTRA SCSI MULTIFUNCTION CONTROLLER
OVERVIEW
The LSI53C876E controller brings the proven performance of the
LSI53C8XX family of PCI-SCSI controllers to a new performance and integration
level. This single-chip multifunction device connects directly to the PCI bus,
presenting one electrical load, while functioning as a single 32-bit PCI
DMA bus master. It contains two wide Ultra SCSI interfaces for maximum
performance and flexibility.
The LSI53C876E, and its companion host adapters that support both single-
ended and differential SCSI environments, along with a complete set of
SCSI drivers, provide a total SCSI solution in desktop, workstation, server,
and RAID environments.
PCI FEATURES
• True multifunction device as defined in PCI 2.1 specification —
Presents only one load to the PCI bus
• Connects directly to the PCI bus without external logic
• Functions as one 32-bit PCI DMA bus master
• Supports 33 MHz PCI bus zero wait state operation
• Supports maximum burst transfer rate of 132 MBps
• Supports shared or separate interrupts on the PCI bus for maximum flexibility
• PCI Subsystem Vendor ID and Subsystem ID support with 2-wire serial
EEPROM port on each channel
• Supports PCI extended access cycles
• Supports 3.3V and 5V PCI interface
LSI53C876E
MULTIFUNCTION CONTROLLER
