PM3390 Datasheet, PDF (1/2 Pages) PMC-Sierra, Inc – Octal EXACT™ Bus Switch Matrix

PMC-Sierra,Inc.
Octal EXACT™ Bus Switch Matrix
FEATURES
• Sixteen Gbit/s, protocol-independent
switching matrix expandable to 32 Gbit/s.
• Provides eight gigabit, full-duplex
EXACT™ Bus ports that each support an
EXACT switch port controller.
• Provides non-blocking connection
between eight EXACT Bus (Ethernet
Switching, Access, Control, and
Termination) rings.
• Supports non-blocking connections
between sixteen EXACT Bus rings to
provide a system bandwidth of
32 Gbit/s using four PM3390 devices.
• Destination lookup table maps logical
EXACT ports to physical PM3390 ports.
Destination lookup table can be
dynamically allocated.
• Provides visibility into internal dataflow to
allow external flow control in systems that
do not use the EXACT Bus link protocol.
• Each chip supports the EXACT Bus
Protocol, which is a 10-bit,
unidirectional insertion ring running at
125 MHz or 135 MHz.
• EXACT Bus ports allow simple box-to-
box, card-to-card, or chip-to-chip
interconnect.
• 8B/10B EXACT Bus encoding is
compatible with Common Serialization
(SERDES) devices to allow serial
extension using coax or twinax cable.
• Management interface connects to an
off-chip microprocessor for access to
internal control registers.
COMPATIBILITY
• Interworks with the following EXACT
Chipset devices:
PM3370 Octal 10/100 Ethernet Switch
Port Controller with MII interfaces.
PM3380 Gigabit Ethernet Switch Port
Controller.
PM3390
PACKAGING
• Provides a standard five signal
P1149.1 JTAG test port for boundary
scan board test purposes.
• Implemented in low power 3.3 V,
CMOS technology.
• Available in a 352-pin Ball Grid Array
(BGA) package.
APPLICATIONS
• High Bandwidth (16 to 32 Gbit/s)
Ethernet Switches that Support
Combinations of 10/100/1000 Ports.
• Multiprotocol Switch (Ethernet, ATM,
Packet Over SONET, FDDI, and TR)
• Modular Ethernet Switches.
• Fixed-configuration Ethernet Switches.
BLOCK DIAGRAM
8 × EXACT
Input Ports
XRXD[9:0]
XRCLK
Per Port
Signals
EXACT
8 Input
Buffers
Pipelined
Data
Mux
Cell
Central
Store
Pipelined
Data
Mux
EXACT
8 Output
Buffers
8 × EXACT
Output Ports
XTXD[9:0]
XTCLK
Per Port
Signals
JTAG
Free List
Manager
Cell List
Manager
Control
Interface
Management
Interface
Expansion
Contol
4 Port
Expansion
Interface
PMC-980237 (R5)
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
© 1999 PMC-Sierra, Inc.