BCM5208R 10/100BASE-TX QUAD-TRANSCEIVER 10BASE-T/100BASE-TX IEEE

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BCM5208R 10/100BASE-TX QUAD-TRANSCEIVER 10BASE-T/100BASE-TX IEEE

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BCM5208R
BCM5208R 10/100BASE-TX QUAD-TRANSCEIVER
10BASE-T/100BASE-TX IEEE 802.3u-compliant Full-duplex support modes IEEE 802.3u-compliant auto-negotiation Media Independent Interface (MII) each port Shared serial management interface Fully integrated digital adaptive equalizers 125-MHz clock generator timing recovery Integrated multimode transmit wave shaping Integrated baseline wander correction status pins Loopback mode diagnostics IEEE 1149.1 (JTAG) support 3.3V power supply 208-pin PQFP package
Fully integrated quad transceiver (MII
magnetics optics)
Decreases system cost port Simplifies system board design Reduces power consumption
transmit wave On-chip multimodeexternal filters shaping Eliminates need
Minimizes
Flexible Ethernet solution: 10BASE-T, 100BASE-TX full-duplex
Suited Ethernet switch products
Digital adaptivebyequalization clock recovery Increases over ideal analog equalizers
Robust performance harsh noise environments over substandard cable Immune on-chip noise crosstalk Insensitive variations process, temperature, voltage
Cost reduction BCM5208 designs
24-Port 10/100BASE-T Ethernet Switch Example
BCM5208R
10/100BASE-TX QUAD-Transceiver
Switching Engine Switch Module Memory Logic
BCM5208R
10/100BASE-TX QUAD-Transceiver
TD+/-{1:4}
TXD[3:0] {1:4} TXEN {1:4} TXER{1:4}
Multimode Baseline Wander Correction 10BASE-T
COL/RXEN {1:4} {1:4} {1:4} RXDV {1:4} RXER {1:4} RXD[3:0] {1:4}
100BASE-T Digital Adaptive Equalizer
RD+/-{1:4}
CRS/Link Detection
AutoNegotiation/ Link Integrity
LNKLED {1:4} COLLED {1:4} 100LED {1:4} FDXLED {1:4} XMTLED {1:4} RCVLED {1:4}
Drivers
CK25
Clock Generator Bias Generator JTAG TAP+BS
Clock Recovery
BIAS
MODES MDIO
JTAG
Registers
Mgmt Control
BCM5208R monolithic CMOS integrated circuit containing transceivers that each perform physical layer interface functions 10BASE-T Ethernet Category unshielded twisted-pair (UTP) cable 100BASE-TX Ethernet Category cable. BCM5208R employs digital signal processing full custom circuit design techniques create highly integrated robust physical layer solution Fast Ethernet switches. complies fully with IEEE 802.3u physical layer Media Independent Interface (MII) auto-negotiation subsections, providing compatibility with industry-standard Fast Ethernet chips.
BCM5208R chip performs 4B5B, MLT3, NRZI, Manchester encoding decoding; clock data recovery; stream cipher scrambling/descrambling; digital adaptive equalization; line transmission; carrier sense; link management functions. BCM5208R connected through side, directly network media other side (through isolation transformers mode). BCM5208R easy cost-reduction path 10/100 systems originally designed with BCM5208. BCM5208R lower power, lower cost alternative that drop into most BCM5208 designs without hardware change.
Broadcom®, pulse logo, Quad-and Connecting everythingT® trademarks Broadcom Corporation and/or subsidiaries United States certain other countries. other trademarks property their respective owners.
BROADCOM CORPORATION 16215 Alton Parkway, P.O. 57013 Irvine, California 92619-7013
2002 BROADCOM CORPORATION. rights reserved. 5208R-PB02-R 11.04.02
Phone: 949-450-8700 FAX: 949-450-8710 Email: info@broadcom.com Web: www.broadcom.com

BCM5208R 10/100BASE-TX QUAD-TRANSCEIVER 10BASE-T/100BASE-TX IEEE

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