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STLC1502 Folha de dados(PDF) 1 Page - STMicroelectronics |
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STLC1502 Folha de dados(HTML) 1 Page - STMicroelectronics |
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1 / 81 page  1/81 STLC1502 January 2002 This is preliminary information on a new product now in development. Details are subject to change without notice. Revision: A04 1.0 GENERAL DESCRIPTION STMicroelectronics’ STLC1502 is a high perfor- mance VoIP processor specially targeted for the time effective design of IP-Phones and analog gateway applications bundled with a comprehensive embed- ded software solution. When used in the Enterprise LAN IP Phone space, this device enables the augmentation and replace- ment of traditional telephone systems with network based communications systems running over local and wide area IP networks. To design an IP phone, the only other parts required will be an analog inter- face, some optional Flash memory for upgradable software and Fast Ethernet physical layer devices. The ST complete IP Phone reference design in- cludes standards compliant Application Program- ming Interfaces (APIs), protocol management software and software development tools. The STLC1502 also has all the proper interfaces to be a cost effective solution for Small Gateway appli- cations. ST also offer a complete SW reference de- sign for Small Gateway applications. Hence, the STLC1502 enables a superior and cost effective platform development for IP-phones as well as voice gateway applications, providing developers with a low risk, rapid time to market solution. The STLC1502 integrates low power D950 DSP with a ARM7/TDMI MCU and a dual port 10/100 Base-T switched Ethernet media access control interface. The main characteristics of the STLC1502 IP proces- sor are as follows: • HCMOS7 technology • Power supply: Core 2.5 V and I/O: 3.3 V • Industry standard 32-bit RISC microprocessor (ARM7/TDMI core) • 16-bit, fixed point 120 MIPs DSP (D950) • Two 10/100 Base-T Ethernet MACs • VLAN support • Ethernet Bridge •JTAG • Smart power management 2.0 REFERENCE SOFTWARE FEATURES Some of the features of the SW provided are: ARM7/TDMI • Industry standard Real time OS: VxWorks • Network Protocol Stack • TCP/IP, UDP, TFTP, DHCP, HTTP server • Ethernet/PC communication drivers • High Level Chip Control • Stack management • SNMP (optional) • Application Specific MIBS • Signalling Protocol • MGCP, H.323 (including H.450), SIP D950 Voice Codec Unit (VCU) features: • G.711 Packetized PCM • G.729AB, 8kbps CS-ACELP • G.726, 16-40 kbps ADPCM • G.723.1a, 6.3/5.3 kbps MP-MLQ • Encoding and decoding of PCM sample frames • Packing/unpacking of compressed informa- tion in Codewords • Fax Modem : T.38 Fax Relay, V.21, V.17, V.27ter and V.29 fax datapump PQFP208 ORDERING NUMBER: STLC1502 VOICE OVER IP PROCESSOR |
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