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Электронный компонент: T2U

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Audacity-T2U Processor
Features
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Netergy Microelectronics' MIPS-X5
unified RISC and DSP core (up to 180
DSP MIPS)
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Pin and code compatible with the
Audacity-T2 processor
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384 KByte on-chip RAM, 16-way
interleaved with single cycle access
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16 KByte, 2-way set associative
cache for external FLASH/SRAM
memory
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Hardware support for cache profiling
and application performance analysis
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External memory-mapped bus
supporting 8-bit and 16-bit
asynchronous devices
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4K instructions (16K Bytes) of internal
boot ROM
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Four external chip selects for glueless
memory-mapped bus interfacing
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External ISA/SRAM-like device
support via memory-mapped bus
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Multichannel DMA engine integrated
with peripherals
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Hardware acceleration for
DES/3DES, CRC, and HDLC
operations
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Two 10/100 Base-T Ethernet MACs
with MII interface for external PHY
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ATM UTOPIA interface, level 2,
single status, 8-bit databus, 2 ports
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H.100/H.110, MVIP, and SCSA
compatibility via TDM port
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Multimedia codec compatibility
via TDM port
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Glueless multiple SLAC support
via TDM port
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GCI/IOM-2 support via TDM port
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Mastering Host port for scaleable
multi-chip systems
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Serial and parallel debug interface
via Serial and Host Interfaces
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Glueless support of SLIC/SLAC
ringing and on/off hook features
via GPIO functions
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Glueless support of character LCD
via GPIO functions
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Telephone-style keypad and LED
support via GPIO functions
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IEEE-1149.1 JTAG boundary scan
board-level test interface
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Low power, 1.8V core voltage, 3.3V
I/O voltage
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0.18 micron 6 layer metal CMOS
process
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196-pin BGA package, body size
15x15mm, ball pitch 1mm
Netergy Microelectronics' Audacity-T2U Voice-over-Packet (VoP) processor is a
high performance system-on-a-chip that contains a unified RISC/DSP processor,
an Ethernet 10/100 Base-T MAC, and an ATM Utopia interface that is also
configurable as a second Ethernet MAC. The Audacity-T2U processor has
substantial on-chip SRAM, eliminating the need for external SRAM or DRAM
when deployed with Netergy Microelectronics' Veracity VoIP software suite.
The Veracity software suite for the Audacity-T2U processor provides all the features
required for VoIP applications. The compact and efficient stacks reside in an external
FLASH memory and leave memory space for system application code within the same
FLASH. Supported codecs include G.711, G.723.1, G.726, G.728, G.729A/B, and
G.729E. Supported call control protocols include H.323, MGCP, SIP, and Megaco. The
Veracity software suite also provides T.38 FAX-over-IP (FoIP) capability. For Voice-
over-DSL (VoDSL) applications, ATM application adaptation layers AAL2 and AAL5
protocol stacks are supported. There are no third party royalty fees associated with the
use of any Netergy Microelectronics' standards-compliant call control protocols.
When used with the Veracity software suite and development environment, the
Audacity-T2U processor makes it easy to build cost effective, high quality VoIP/VoDSL
gateways, IP-PBXs, and IP phones.
2001, 2002 Netergy Microelectronics, Inc. Netergy, Audacity and Veracity are trademarks of Netergy Microelectronics, Inc. All other trademarks or registered trademarks are property of their
respective owners. The specifications herein are subject to change without notice. Printed in the USA.
000-0069-001 REV C 04/02
Architecture
The Audacity-T2U processor implements a
Harvard-architecture RISC microprocessor with
substantial DSP extensions:
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The
CPU
implements Netergy Microelectro-
nics' MIPS-X5 ISA (Instruction Set
Architecture). The CPU supports single cycle
multiply-accumulate with concurrent address
pointer update and memory to register file
data fetch. The multiplier supports all
combinations of 16-bit and 32-bit precision
operations. Four dedicated address pointer
registers, two 40-bit accumulators, and 32
general-purpose 32-bit registers are included
in the CPU.
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The
Memory Controller
provides arbitration
and non-blocking switching between internal
RAM interleaves, peripherals, CPU, and the
DMA engine.
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The
Host Interface
allows external
microprocessors to operate with the
Audacity-T2U processor. The Host Interface
has three logical bi-directional ports
supported by six DMA channels.
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Two
Ethernet Media Access Controllers
(MACs)
implement the packet based network
interface(s).
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An internal
DMA Engine
supports all DMA
channels.
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A
TDM Bitstream Interface
implements the
raw audio input/output mechanism. The TDM
is very flexible and supports four bi-
directional streams via eight DMA channels.
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The
Mastering Host Interface
allows the
Audacity-T2U to communicate efficiently with
two additional Audacity-T2U or Audacity-T2
processors. The interface supports a bi-
directional DMA stream in hardware for each
slave device.
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A
UTOPIA Interface
supports the direct
connection of an ATM PHY, typically a xDSL
modem device. The interface provides
hardware ATM header expansion/packing
using an aligned descriptor and supports
programmable hardware acceleration for
header matching of received cells. The
interface is supported by four DMA channels.
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The
UART Interface
provides a two-wire
serial port with hardware DMA support.
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The
DES Accelerator
provides a low-level
hardware based implementation of the
compute-intensive DES encryption algorithm.
With the supporting software, numerous
encryption standards, such as IPSec, can be
efficiently implemented.
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The
HDLC/CRC Accelerator
provides a
hardware implementation of low-level HDLC
(High-level Data Link Control) bitstream
operations as well as 10-bit, 16-bit, and 32-bit
CRC algorithms.
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The 43 pin
General-Purpose I/O Interface
supports character-based liquid crystal
displays, keypad scanning, LED operation,
and slave to master IRQs in multi-device
configurations.
Distributors
and Representatives
Sales Offices
Netergy Microelectronics, Inc.
Worldwide Headquarters
2445 Mission College Blvd.
Santa Clara, California 95054, USA
Tel: +1 408 727 1212
Fax: +1 408 727 1357
info@netergymicro.com
Netergy Microelectronics, Ltd.
European Office
Windsor House
Spittal Street
Marlow SL7 3HJ, UK
Tel: +44 1628 402800
Fax: +44 1628 402829
info.europe@netergymicro.com
www.netergymicro.com
For specific information, visit us @
www.netergymicro.com.