®
DEVICE SPECIFICATION
“CROSSBOW” 32 X 32 800 MBIT/S CROSSPOINT SWITCH
“CROSSBOW” 32 X 32 800 MBIT/S CROSSPOINT SWITCH
BiCMOS PECL CLOCK GENERATOR
GENERAL DESCRIPTION
S2024
S2024
FEATURES
• Full broadcast switching capability
• 32 x 32 crosspoint structure, expandable to 64 x
64 with no external components
• ECL 10K data path and TTL I/O for configuration
control provide high speed with easy interfacing to
slower-speed circuitry
• Up to 800 Mbit/s NRZ data rate in transparent
mode, 400-Mbit/s operation in synchronous mode
• 196-pin LDCC package
• Reconfigurable without disturbing operation
• Differential or single-ended clocking
The S2024 “Crossbow” is a high-speed 32 x 32
crosspoint switch with full broadcast capability—any of
its 32 inputs can be connected independently to any or
all of its 32 outputs. In addition, the S2024 can be
expanded, through use of its expansion data inputs
(XDIN0–XDIN31), to a 64 x 64 crosspoint switch with
no external components. Further expansion is possible
with external addressing logic.
Two operating modes—synchronous (400 Mbit/s) and
transparent (800 Mbit/s)—provide maximum flexibility
across a range of applications. The 10K ECL logic data
path makes the part ideal for high-speed applications,
while the S2024’s TTL addressing and control simplify
interfacing to slower-speed circuitry. The switch can be
completely reconfigured in only 4 ns without disturbing
switch operations.
APPLICATIONS
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Internet switches
Digital video
Digital demultiplexing
Microwave or fiber-optic data distribution
High-speed automatic test equipment
Datacom or telecom switching
Figure 1. Functional Block Diagram
32
XDINØ–31
OUTPUT
LATCH
INPUT
LATCH
32
DINØ–31
MDCLK
MDCLKN
VBB1
CNFGSTB
32
32 x 32
CROSSPOINT
32
32
DOUTØ–31
SDCLK
SDCLKN
192
CONFIGURATION
LATCH
192
VBB2
OUTADDØ–4
OAEN
LOAD
5
32
5:32
DECODE
EN
32 X 6
REGISTER
FILE
RST
DATA
RESET
CNFGCLK
6
INADDØ–5
CLK
June 15, 1999 / Revision B
1
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
