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產品名稱：VoIP Gateway and Phone solution
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VoIP Gateway and Phone solution

產品描述

general desc-ription

the cm5000 is a highly integrated voice over ip silicon solution. it combines 32-bits risc cpu, dsp, and 2 fast ethernet macs. it is the most cost-effective solution for voice over ip gateway and ip phone solution.

the 32-bit risc cpu runs at 150mhz, with 4k bytes instruction cache and 4k bytes data cache. it supports the system management, network management, protocol stacks management, and application program.

the 16-bit fix-point dsp runs at 125mhz, with 32kx24 program memory, 16kx16 coefficient memory, and 15kx16 data memory. it provides 2 serial ports to build maximum 2 voice channels. the dsp supports voice compression (g.711, g.723.1, g.729), acoustic echo cancellation, and a variety of telephony algorithms.

the 2 10/100base-t fast ethernet macs support full- or half-duplex mode, port based vlan, mii interface, and build-in 2kbytes fifo packet buffer. users can use mii interface to connect the external phy or fast ethernet switch to build a voip gateway or ip phone application.

cm5000 also provides lcd control, keypad, uart serial interface, and several general-purpose i/os interfaces for ip phone application.

features

＊ 32-bit risc cpu

＊ - 4k bytes of direct mapped instruction cache

＊ - 4k bytes of direct mapped data cache with write-through policy

＊ - memory controller: flash/sdram

programmable sdram controller

programmable rom, i/o read/write timing

＊ - interrupt control

maximum 2 interrupts input

＊ - timers

two independent timers

watchdog timer provided

＊ - gpio

maximum 32 general purpose gpio

＊ - serial port interface (spi)

＊ - 150mhz internal system clock

＊ - jtag support

＊ 16-bit fixed-point dsp

＊ - interrupt control

maximum 2 inputs

＊ - program sram 32kx24
＊ - coefficient sram 16kx16

＊ - data sram 15kx16

＊ - two serial port interfaces

＊ - dsp clock speed runs at 125mhz

＊ two 10/100 macs

＊ - ieee802.3/802.3u compliant

＊ - vlan support

＊ - mii interface to external phy

＊ - scatter and gather transmit/receive dma

＊ - 2kb transmit/receive fifo

＊ lcd control

＊ separate uart for risc/dsp

＊ - only tx/rx are provided

＊ built-in pll

＊ independent two unidirectional 64x16 fifos

＊ download mechanism for dsp program

＊ 0.18μ process technology

＊ - 208-pin pqfp package

applications

＊ telephone with voip function

＊ gateway with voip function

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VoIP Gateway and Phone solution