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BCM5770/BCM5770R
(R)
HIGH-PERFORMANCE 8/4-PORT SATA-I PCI-X(R) CONTROLLERS
BCM5770/BCM5770R FEATURES * Industry's first 0.13 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 QDMATM 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(R) * Linux(R)
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 I2 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(R), the pulse logo, and Connecting everything(R) 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.
(R)
BROADCOM CORPORATION 16215 Alton Parkway, P.O. Box 57013 Irvine, California 92619-7013
(c) 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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