AT75C220-C256

AT75C220-C256 Datasheet

AT75C220

Part	Datasheet
AT75C220-C256	AT75C220-C256 (pdf)

Related Parts	Information
AT75C220-Q208	AT75C220-Q208

PDF Datasheet Preview
• Processor Core • One 16-bit Fixed-point Core • Dual Ethernet 10/100 Mbps MAC Interface with Voice Priority • Multi-layer AMBA Architecture • 256 x 32-bit Boot ROM • 88K Bytes of Integrated Fast RAM • Flexible External Bus Interface with Programmable Chip Selects • Codec Interface • Multi-level Priority, Individually Maskable, Vectored Interrupt Controller • Three 16-bit Timers/Counters • Additional Watchdog Timer • Two USARTs with FIFO and Modem Control Lines • Industry Standard Serial Peripheral Interface SPI • Up to 24 General-purpose I/O Pins • On-chip SDRAM Controller for Embedded ARM7TDMI and OakDSPCore • JTAG Debug Interface • 2.5V Power Supply for the Core and the PLL Pins, 3.3V for Other I/O Pins • Software Development Suites Available for ARM7TDMI and OakDSPCore • Supported by a Wide Range of Ready-to-use Application Software, Including Multitasking Operating System, Networking and Voice Processing Functions • Available in a 208-lead PQFP Package Smart Internet Appliance Processor SIAP AT75C220 The AT75C220, Atmel’s device in the family of smart Internet appliance processors SIAP , is a high-performance processor specially designed for professional Internet appliance applications, such as the Ethernet IP phone. The AT75C220 is built around an ARM7TDMI microcontroller core running at 40 MIPS with an OakDSPCore co-processor running at 60 MIPS and a dual-port Ethernet 10/100 Mbps MAC interface. In a typical standalone IP phone, the DSP handles the voice processing functions voice compression, acoustic echo cancellation, etc. , while the dual-port Ethernet 10/100 Mbps MAC interface establishes the connection to the Ethernet physical layer PHY , which links the network and the PC. In such an application, the power of the ARM7TDMI allows it to run a VoIP protocol stack as well as all the system control tasks. Atmel provides the AT75C220 with three levels of software modules: • A special port of the Linux kernel as the proposed operating system • A comprehensive set of tunable DSP algorithms for voice processing, specially tailored to be run by the DSP subsystem • A broad range of application level software modules such as H323 telephony or POP-3/SMTP e-mail services AT75C220 Pin Configuration Table AT75C220 Pin Configuration Pin Signal Pin Signal MB_TXCLK SCLKA MB_RXD<0> VDD3V3 MB_RXD<1> MB_RXD<2> STXA MB_RXD<3> SRXA MB_RXER NTRST MB_RXCLK MA_COL MB_RXDV MA_CRS MB_MDC MA_TXER VDD3V3 MA_TXD<0> MA_TXD<1> MB_MDIO MA_TXD<2> MB_LINK MA_TXD<3> A<0> MA_TXEN A<1>

PDF Datasheet Preview

• Processor Core
• One 16-bit Fixed-point Core
• Dual Ethernet 10/100 Mbps MAC Interface with Voice Priority
• Multi-layer AMBA Architecture
• 256 x 32-bit Boot ROM
• 88K Bytes of Integrated Fast RAM
• Flexible External Bus Interface with Programmable Chip Selects
• Codec Interface
• Multi-level Priority, Individually Maskable, Vectored Interrupt Controller
• Three 16-bit Timers/Counters
• Additional Watchdog Timer
• Two USARTs with FIFO and Modem Control Lines
• Industry Standard Serial Peripheral Interface SPI
• Up to 24 General-purpose I/O Pins
• On-chip SDRAM Controller for Embedded ARM7TDMI and OakDSPCore
• JTAG Debug Interface
• 2.5V Power Supply for the Core and the PLL Pins, 3.3V for Other I/O Pins
• Software Development Suites Available for ARM7TDMI and OakDSPCore
• Supported by a Wide Range of Ready-to-use Application Software, Including

Multitasking Operating System, Networking and Voice Processing Functions
• Available in a 208-lead PQFP Package

Smart Internet Appliance Processor SIAP

AT75C220

The AT75C220, Atmel’s device in the family of smart Internet appliance processors SIAP , is a high-performance processor specially designed for professional Internet appliance applications, such as the Ethernet IP phone. The AT75C220 is built around an ARM7TDMI microcontroller core running at 40 MIPS with an OakDSPCore co-processor running at 60 MIPS and a dual-port Ethernet 10/100 Mbps MAC interface.

In a typical standalone IP phone, the DSP handles the voice processing functions voice compression, acoustic echo cancellation, etc. , while the dual-port Ethernet 10/100 Mbps MAC interface establishes the connection to the Ethernet physical layer PHY , which links the network and the PC. In such an application, the power of the ARM7TDMI allows it to run a VoIP protocol stack as well as all the system control tasks.

Atmel provides the AT75C220 with three levels of software modules:
• A special port of the Linux kernel as the proposed operating system
• A comprehensive set of tunable DSP algorithms for voice processing, specially tailored to be run by the DSP subsystem
• A broad range of application level software modules such as H323 telephony or POP-3/SMTP e-mail services

AT75C220 Pin Configuration

Table AT75C220 Pin Configuration

Pin Signal

Pin Signal

MB_TXCLK

SCLKA

MB_RXD<0>

VDD3V3

MB_RXD<1>

MB_RXD<2>

STXA

MB_RXD<3>

SRXA

MB_RXER

NTRST

MB_RXCLK

MA_COL

MB_RXDV

MA_CRS

MB_MDC

MA_TXER

VDD3V3

MA_TXD<0>

MA_TXD<1>

MB_MDIO

MA_TXD<2>

MB_LINK

MA_TXD<3>

A<0>

MA_TXEN

A<1>

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Datasheet ID: AT75C220-C256 518717