bcm5488s Broadcom Corp., bcm5488s Datasheet - Page 2

• Manufacturer Part Number: bcm5488s
• Description: Bcm5488s - Octal-port 10/100/1000base-t Gigabit Copper Transceiver
• Manufacturer: Broadcom Corp.

The BCM5488S consists of eight complete 10/100/1000BASE-T Gigabit
Ethernet transceivers integrated on a single monolithic CMOS chip. The
BCM5488S is optimized for low power and small footprint size to enable
high-port density applications. By lowering system cost and reducing
power dissipation by nearly 30 percent, the BCM5488S enables a new class
of cost-effective Gigabit Ethernet equipment, driving the delivery of
Gigabit Ethernet bandwidth to the desktop.
The BCM5488S DSP-based architecture and advanced power management
techniques combine to achieve robust and low-power operation over
existing Category 5 twisted-pair wiring. The BCM5488S architecture not
only meets the requirements of IEEE 802.3, IEEE 802.3u, and IEEE
802.3ab but also maintains the industry’s highest level of margin over IEEE
requirements for echo, near-end crosstalk (NEXT), and far-end crosstalk
(FEXT). Low power is the key to implementing high-density Gigabit
Ethernet switches, and the BCM5488S has the lowest power in the industry
at less than 625 mW per port. In addition, the BCM5488S has extremely
low EMI emissions, which reduces the design constraints required to meet
EMI radiation specifications.
The BCM5488S supports the SGMII and SerDes MAC interfaces. The
SGMII and serial SerDes interfaces are reduced pin-count (6 and 4,
respectively, versus 25) versions of the GMII. These reduced pin-count
interfaces simplify design and lower system cost by reducing the number
of layers required to route high density solutions. In addition, these
interfaces allow fewer pins at the MAC/switch, which reduces the MAC/
switch cost by enabling smaller die sizes than would be possible with full
GMII.
Broadcom
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and/or the EU. Any other trademarks or trade names mentioned are the property of their respective
owners.
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2006 by BROADCOM CORPORATION. All rights reserved.
5488S-PB01-R
®
, the pulse logo, Connecting everything
04/10/06
REGCNTL [2:1]
REGSENV [2:1]
TRD [3:0] {8}±
TRD [3:0] {6}±
TRD [3:0] {5}±
TRD [3:0] {3}±
TRD [3:0] {2}±
TRD [3:0] {7}±
TRD [3:0] {4}±
TRD [3:0] {1}±
REGSUP[2:1]
RDAC [2:1]
®
®
, and the Connecting everything logo are among
Correction
Negotiation
Baseline
Regulator
Generator
Wander
Voltage
PGA
Auto-
Bias
BCM5488S Reference Design
TX DAC
ADC
O V E R V I E W
Registers
Canceller
Recovery
Timing &
Phase
Echo
FFE
MII
This device is another member of Broadcom’s 0.13-µm Gigabit Ethernet
copper PHY family, joining more than a dozen other quad and single
products. The 0.13-µm process is the optimal process that offers the best
performance, lowest cost, and lowest power for Gigabit Ethernet copper
solutions. Devices based on the 0.13-µm process offer an excellent long-
term cost curve, enabling better cost reduction over time (compared to
older technologies) without having to redesign or requalify a new part.
Each BCM5488S port is fully independent and has individual interface,
control, and status registers, and incorporates a number of advanced
features. A link-quality indicator LED gives installers an instant visual
indication if there are any problems with the wiring plant supporting
operation at the preferred speed. This includes physical wiring defects that
the BCM5488S cannot automatically correct for and channel conditions
such as excessive cable length and return loss, crosstalk, echo, and noise.
Broadcom’s CableChecker software can be used with the device to provide
remote management of the cable and a first level of diagnostics and fault
isolation.
The BCM5488S has the industry's highest tolerance to electrostatic
discharge (ESD). This prevents ESD damage not only during
manufacturing but also during CESD events in the field. CESD is an ESD
event that occurs when an electrically charged network cable is plugged
into a network port. This is an issue that has become more prevalent with
contemporary cable installations, and the BCM5488S can tolerate well
over 3kV of CESD.
Canceller
Decoder
Control
XTALK
MGMT
Trellis
DFE/
MII
Generator
Interface
Interface
SGMII
Clock
LED
SGIN {8:1}±
SGOUT {8:1}±
SCLK {8:1}±
LED[4:1] {8:1}/
SLED[32:1]
SLED_CLK
SLED_STRB
SLED_IN
MDIO [2:1]
MDC [2:1]
Modes
REFCLK2+
REFCLK1+
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Web: www.broadcom.com