BCM5770/BCM5770R
HIGH-PERFORMANCE 8/4-PORT SATA-I
PCI-X
CONTROLLERS
BCM5770/BCM5770R Block Diagram
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
Hot-plug support
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
B C M 5 7 7 0 / B C M 5 7 7 0 R F E A T U R E S
F E A T U R E S ( C O N T I N U E D )
Embedded on a motherboard
DAS RAID HBA
External RAID storage
A P P L I C A T I O N S
PCI
-
X INTERFACE
HO
ST ARBITER (1 G
B
/s)
SA
TA
PH
Y
DMA Channels
CMD & PRD RAM
Data FIFO
SATA
Transport
SATA
Link Layer
Link SM
CRC
LFSR
8B/10B
SA
TA
PH
Y
DMA Channels
CMD & PRD RAM
Data FIFO
SATA
Transport
SATA
Link Layer
Link SM
CRC
LFSR
8B/10B
64b
133 MH
1.5 Gb/s
1.5 Gb/s
Port1
Port8
O V E R V I E W
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com
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
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.
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.
BCM5770/BCM5770R Applications
External Storage System
Server Storage
FC/
iSCSI
Controller
CPU
BCM5770
BCM5770
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
FC/iSCSI
Controller
CPU
BCM5770
BCM5770
1
2
3
4
5
6
7
8
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
1
2
3
4
5
6
7
8
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
BCM5770
1
2
3
4
5
6
7
8
PCI-X
BCM5770
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
PCI-X
PDF 
ZIP