BCM5770/BCM5770R
®
HIGH-PERFORMANCE 8/4-PORT SATA-I
← →
PCI-X
®
CONTROLLERS
BCM5770/BCM5770R FEATURES
•
Industry's first 0.13µ CMOS SATA-I Controllers
•
8 (BCM5770) and 4 (BCM5770R) ports
•
Integrated high-performance 1.5G SATA PHY
•
•
•
Enhanced support for driving backplanes
Host interfaces
•
PCI-X 1.0 66, 100, and 133 MHz
•
PCI 2.3 32-bit and 64-bit interfaces
High-performance QDMA™ engine lowers CPU utilization,
increases IOPS and throughput
•
Ultra-deep command queues for command queuing
•
256 independent command queue entries per port
•
Independent scatter gather DMA engines
•
Advanced interrupt coalescing algorithms
Automatic status block update
•
Decrease CPU utilization associated with READ wait time
•
Increase efficiency of PCI-X host interface
Integrated PRBS generator and monitor
FEATURES (CONTINUED)
•
•
•
•
•
•
Enclosure management support
8-port and 4-port versions are pin-compatible
324 P-BGA packages
1.68W max (BCM5770)
1.36W max (BCM5770R)
Driver support
•
Windows
®
•
Linux
®
APPLICATIONS
•
Embedded on a motherboard
•
DAS RAID HBA
•
External RAID storage
•
•
•
Hot-plug support
BCM5770/BCM5770R Block Diagram
DMA Channels
CMD & PRD RAM
SATA
Transport
SATA
Link Layer
Link SM
CRC
LFSR
8B/10B
SATA PHY
HOST ARBITER (1 GB/s)
1.5 Gb/s
Port1
64b
133 MH
PCI-X INTERFACE
Data FIFO
DMA Channels
CMD & PRD RAM
SATA
Transport
Data FIFO
SATA
Link Layer
Link SM
CRC
LFSR
8B/10B
Port8
1.5 Gb/s
SATA PHY
OVERVIEW
External Storage System
Server Storage
PCI-X
BCM5770
BCM5770
1
5
2
6
3
7
4
8
1
2
6
2
6
3
7
3
7
4
8
4
8
BCM5770
BCM5770
FC/iSCSI
FC/iSCSI
Controller
Controller
5
1
5
CPU
BCM5770
BCM5770
BCM5770/BCM5770R Applications
The BCM5770/BCM5770R is a highly integrated, multiport SATA-I
controller that has been designed for high performance storage
applications requiring low host CPU utilization and maximum I/O
performance.
The device communicates with the host via a 64-bit, 133-MHz PCI-X1.0
bus interface. It attaches directly to a maximum of eight SATA-I disk
drives or to backplanes on the target side via a high-performance,
integrated SATA PHY that is capable of driving long-length backplanes.
Additionally, the BCM5770/BCM5770R supports hot-plug capability,
enabling SATA disk drives to be inserted and removed from a storage
rack or server without affecting system operation.
A high-bandwidth host arbiter (1 GB/s) decouples the PCI-X host
interface from the SATA ports, enabling maximum throughput for
workloads demanding sequential I/O performance.
Data from/to the drives are broken into 8-KB data FISes on the SATA
links. The PCIX interface is arbitrated based on a round robin or LRU
algorithm. Data is transferred in 512-byte blocks on the PCIX, thereby
allowing fairness among the data channels.
The BCM5770/BCM5770R provides an interrupt coalescing mechanism
to pace the host interrupts it generates. This allows host software to
batch-process interrupts efficiently. In addition, the BCM5770/
BCM5770R incorporates a mechanism to reduce IO reads by
periodically DMAing the BCM5770/BCM5770R status block into host
memory. Both of these mechanisms vastly reduce the host CPU
utilization by limiting the amount of adaptor accesses that must be
performed.
A Low Pin Count (LPC) Interface Specification 1.0 compliant interface
is available to connect the BCM5770/BCM5770R to an external flash/
ROM up to 128 KB. Three general-purpose I/O pins with tri-state
capability are available and can be specially configured to drive LEDs.
An I
2
C master interface is also available to communicate with an
external enclosure management device or with a serial EEPROM.
On-board power supply regulators are available that generate local 2.5V
and 1.2V rails, allowing the entire chip to run from a single external 3.3V
power source.
Built-in PRBS or pseudo-random bit sequence test generators/checkers
are available per port for PHY testing without the use of additional
hardware or drives. These are programmed from the in-band PCI
interface.
Broadcom
®
, the pulse logo, and
Connecting everything
®
are trademarks of Broadcom Corporation and/
or its subsidiaries in the United States and certain other countries. All other trademarks mentioned are the
property of their respective owners.
®
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2004 by BROADCOM CORPORATION. All rights reserved.
5770/5770R-PB01-R10/08/04
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com
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