OVERVIEW
PCI
STATUS
MII
CONTROL
RX CPU
TX CPU
BIAS
RDAC
REGISTERS
64KB BUFFER
MEMORY
LED
CONTROL
PORT 1 LED Interface
DMA
CONTROL
MEDIA ACCESS
CONTROLLER (MAC)
ETHERNET
TRANSCEIVER
P1_TRD+/- [3:0]
PCI FUNCTION #1
PCI/PCI-X
Bus
PCI/PCI-X
ARBITER
FLASH
EEPROM
SMBus
REGULATOR
CONTROL
GPIO
SEEPROM Interface
FLASH Interface
Regulator Control
General Purpose IO
(GPIO)
PCI FUNCTION #2
DMA
CONTROL
MEDIA ACCESS
CONTROLLER (MAC)
ETHERNET
TRANSCEIVER
P2_TRD+/- [3:0]
REGISTERS
PCI_CLK
XTAL_I
XTAL_O
PLL
CLOCK
GENERATOR
STATUS
PCI
CONTROL
MII
64 KB BUFFER
MEMORY
TX CPU
RX CPU
LED
CONTROL
PORT 2 LED Interface
JTAG
JTAG
The BCM5704C is a fully integrated dual-port, 10/100/1000BASE-T
Gigabit Ethernet media access control and physical layer transceiver
solution for high-performance network applications. The BCM5704C is
a highly integrated solution combining two triple-speed, IEEE 802.3-
compliant media access control (MAC), PCI, and PCI-X bus interfaces,
an on-chip buffer memory, and an integrated physical layer transceiver
in a single device. The BCM5704C is fabricated in a low-voltage, 0.13-
µm CMOS process providing a low-power system solution. By itself the
BCM5704C provides a complete single-chip dual-port Gigabit Ethernet
NIC or LoM solution.
The BCM5704C includes two 10/100/1000-Mbps Ethernet MACs with
full/half-duplex capability at all speeds and two 10/100/1000 copper
PHYs. Support for the following 802.3 functions is featured in the MAC:
VLAN tagging, layer 2 priority encoding, link aggregation, and full-
duplex flow control.
Although the device provides a single PCI v2.2/PCI-X v1.0 bus
interface, the device functions as if there are two logical software
interfaces. Interrupts are handled via two interrupt pins (INTA and
INTB) on the PCI connector. Individual MAC on-chip memory provides
packet buffering for higher performance and load balancing. Each MAC
function contains dual (TX and RX) on-chip processors enabling custom
frame processing features, including TCP segmentation.
The transceiver is fully compatible with the IEEE 802.3 standard for
auto-negotiation of speed. Additionally, several Plug and Play
enhancements have been added to make the device even more user
friendly. A link quality indicator LED gives installers an instant visual
indication if there are any issues with the wiring plant supporting
operation at the desired speed. This includes physical wiring defects or
channel conditions, such as excessive cable length, return loss, crosstalk,
echo, and noise. Broadcom’s remote cable management and diagnostics
software can be used with the device to provide remote management of
the cable and a first level of diagnostics and fault isolation. The
BCM5704C continually monitors various channel conditions. The
optional wirespeed capability allows the BCM5704C to force auto-
negotiation to be automatically limited by the speed that the channel can
reliably support, rather than the performance of the end equipment.
Target applications of the BCM5704C:
BCM5704C software support:
•
Microsoft
®
Windows
®
98, NT4.0, 2000, XP, NT64
•
Linux
®
2.2, 2.4
•
Linux64®
•
NetWare
®
4.x, 5.x, 6.x
•
PXE 2.0
•
Solaris™ x86
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
© 2005 by BROADCOM CORPORATION. All rights reserved.
5704C-PB04-R 1/6/05
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com
BOARDCOM [ Broadcom Corporation. ]
