VSC870 Datasheet, PDF (1/40 Pages) Vitesse Semiconductor Corporation – High Performance Serial Backplane Transceiver

Data Sheet
VSC870
VITESSE
SEMICONDUCTOR CORPORATION
High Performance Serial
Backplane Transceiver
Features
• Performs 32-Bit Parallel to Serial and Serial to
Parallel Functions
• Serial Data Rates are 2.0Gb/s
• Designed in Conjunction with the VSC880 Serial
Crosspoint Switch
• Performs Bit Alignment, Word Alignment and
Cell Alignment
• Three Modes of Operation:
Distributed Control Packet Mode, Central
Control Cell Mode and Direct Mode
• Support for Multicast and Multiple Input Queues
• Supports Priorities, Camp-on and
Retransmission Capability in Packet Mode
• Built-in Flow Control Channel in Packet Mode
• Supports Cell Synchronization in Cell Mode
• Interfaces Directly with Industry Standard
FIFOs
• Contains Redundant Serial I/Os and Internal
Loopback Mode
• 5V Tolerant TTL Inputs
• Single 3.3V Power Supply
• Available in 192 BGA Package
VSC870 Block Diagram
TXIN[31:0]
TXTYP[1:0]
TXEN
RTR
ABORT
BYPASS
WCLK
TXOK
RXOK
RXWA
RXTYP[1:0]
RXOUT[31:0]
ACK/RCLK
RXEN
RFM
RTM/TCLK REN
WSIN WSOUT OOS RESYNEN
Transmit
Control ^SCRAM
Parallel
to
Serial
Alignment
Word Gen
TXCLK
Generator
Word/Cell
Aligner
RXCLK
Generator
Receive
Control
DeSCRAM
Serial
to
Parallel
CRU
Signal Detect
RESET
SCRAM
TXSA+/TXSA-
CMU
TXSB+/TXSB-
FACLPBK
REFCLK
DLYEN/CCKIN
MODE[1]
MODE[0]
LOOPBACK
RXSA+/RXSA-
RXSB+/RXSB-
RXSEL
TESTEN
VSCTE
CELLSYN
ALIVE
LTIME
G52190-0, Rev 4.1
01/05/01
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: [phone] • Email: [e-mail]
Internet: www.vitesse.com
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