IDT72V70180 Datasheet, PDF (1/20 Pages) Integrated Device Technology – 3.3 VOLT TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128 3.3V Power Supply

3.3 VOLT TIME SLOT INTERCHANGE
DIGITAL SWITCH
128 x 128
IDT72V70180
FEATURES:
• 128 x 128 channel non-blocking switching at 2.048 Mb/s
• Per-channel variable or constant throughput delay
• Automatic identification of ST-BUS^®/GCI interfaces
• Accepts 4 serial data streams of 2.048 Mb/s
• Automatic frame offset delay measurement
• Per-stream frame delay offset programming
• Per-channel high impedance output control
• Per-channel Processor Mode
• Control interface compatible to Intel/Motorola CPUs
• Connection memory block programming
• Available in 64-pin Thin Plastic Quad Flatpack (TQFP) and
64-pin Small Thin Quad Flatpack (STQFP)
• 3.3V Power Supply
• Operating Temperature Range -40°C to +85°C
• 3.3V I/O with 5V Tolerant Inputs
DESCRIPTION:
The IDT72V70180 is a non-blocking digital switch that has a capacity of
128 x 128 channels at 2.048 Mb/s. Some of the main features are: program-
mable stream and channel control, Processor Mode, input offset delay and high-
impedance output control.
Per-stream input delay control is provided for managing large multi-chip
switches that transport both voice channel and concatenated data channels. In
addition, input streams can be individually calibrated for input frame offset.
FUNCTIONAL BLOCK DIAGRAM
VCC GND RESET
ODE
RX0
RX1
Receive
Serial Data
RX2
Streams
RX3
Loopback
Data Memory
Internal
Registers
Output
MUX
TX0
TX1
Transmit
Serial Data
Streams
TX2
Connection
Memory
TX3
Timing Unit
Microprocessor Interface
CLK F0i FE IC
AS/ IM DS/ CS R/W/ A0-A7 DTA D8-D15/
ALE
RD
WR
AD0-AD7
5716 drw01
IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc. The ST-BUS^ is a trademark of Mitel Corp.
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 2003 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice.
MARCH 2003
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