bcm5488r Broadcom Corp., bcm5488r Datasheet - Page 2

• Manufacturer Part Number: bcm5488r
• Description: Bcm5488r - Octal-port 10/100/1000base-t Gigabit Copper Transceiver
• Manufacturer: Broadcom Corp.

T he BCM5488R consists of eight complete 10/100/1000BASE-T Gigabit
Ethernet transceivers integrated on a single monolithic CMOS chip. The
BCM5488R 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 BCM5488R enables a new
class of cost-effective Gigabit Ethernet equipment, driving the delivery of
Gigabit Ethernet bandwidth to the desktop.
The BCM5488R DSP-based architecture and advanced power
management techniques combine to achieve robust and low-power
operation over existing Category 5 twisted-pair wiring. The BCM5488R
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 BCM5488R has the lowest power in the
industry at less than 600 mW per port. In addition, the BCM5488R has
extremely low EMI emissions, which reduces the design constraints
required to meet EMI radiation specifications.
The BCM5488R supports the RGMII MAC interface. The RGMII
interface is a reduced pin-count (12 versus 25) version of the GMII. The
RGMII clock timing can be adjusted to eliminate the board trace delays
required by the RGMII specification. The reduced pin-count interface
simplifies design and lowers system cost by reducing the number of layers
required to route high-density solutions. In addition, this interface allows
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
the trademarks of Broadcom Corporation and/or its affiliates in the United States, certain other countries
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.
5488R-PB02-R
®
, the pulse logo, Connecting everything
07/26/06
REGCNTL [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}±
SGOUT {8:1}±
REGSUP [2:1]
REGSEN [2:1]
SGIN {8:1}±
®
®
, and the Connecting everything logo are among
Correction
SGMII-Slave
Negotiation
Baseline
Regulator
Wander
SerDes
Voltage
PGA
Auto-
TX DAC
BCM5488R Reference Design
ADC
RGMII
I/F
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 BCM5488R 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 BCM5488R 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 BCM5488R 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 BCM5488R can tolerate well
over 3 kV of CESD.
Canceller
Decoder
Control
XTALK
MGMT
Trellis
DFE/
MII
Generator
Generator
Interface
Interface
RGMII
Clock
LED
Bias
TXD [3:0]{8:1}
GTXCLK {8:1}
TX_EN {8:1}
RXD [3:0]{8:1}
RXC {8:1}
RX_DV {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+
RDAC [2:1]
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Web: www.broadcom.com