SI3056-KS Datasheet(数据表) 21 Page - Silicon Laboratories

来自 : html.alldatasheetcn.com/html-p 发布时间：2021-03-25

zoom inzoom out 21 pageSi3056Si3018/19/10Rev. 1.05215. Functional DescriptionThe Si3056 is an integrated direct access arrangement(DAA) that provides a programmable line interface tomeet global telephone line interface requirements. TheSi3056 implements Silicon Laboratories® patentedisolation technology and offers the highest level ofintegration by replacing an analog front end (AFE), anisolation transformer, relays, opto-isolators, and a 2- to4-wire hybrid with two 16-pin packages.The Si3056 DAA is software programmable to meetglobal requirements and is compliant with FCC, TBR21,JATE, and other country-specific PTT specifications asshown in Table 16 on page 26. In addition, the Si3056meets the most stringent worldwide requirements forout-of-band energy, emissions, immunity, high-voltagesurges, and safety, including FCC Part 15 and 68,EN55022, EN55024, and many other standards.5.1. Upgrading from the Si3034/35/44 toSi3056The Si3056 offers Silicon Laboratories® customerscurrently using Si3034/35/44 standard serial interfaceDAA chipsets with an upgrade path for use in newdesigns. The Si3056 digital interface is similar to theSi3034/35/44 DAAs, thus the Si3056 retains the abilityto connect to many widely available DSPs. This alsoallows customers to leverage software developed forexisting Si3034/35/44 designs. More importantly, theSi3056 also offers a number of new features notprovided in the Si3034/35/44 DAAs. An overview of thefeature differences between the Si3044 and the Si3056is presented in Table 14. Finally, the globally-compliantSi3056 can be implemented with roughly half theexternal components required in the already highlyintegrated Si3034/35/44 DAA application circuits. Thefollowing items have changed in the Si3056 ascompared to the Si3034/35/44 DAAs:The pinout, the application circuit, and the bill ofmaterials. The Si3056 is not pin compatible withSi3034/35/44 DAA chipsets.New features have been added to the Si3056including more ac terminations, a programmablehybrid, finer gain/attenuation step resolution, finerresolution loop current monitoring capability, ringvalidation, more HW interrupts, a 200 Hz lowfrequency filter pole. (See the appropriate functionaldescriptions.)The secondary communication data format (see 5.26.Digital Interface on page 37).The low-power sleep mode, and systemrequirements to support wake-on-ring. (See 5.28.Power Management on page 39.)5.2. Line-Side Device SupportThree different line-side devices can be used with theSi3056 system-side device:Globally-compliant line-side device—Targets globalDAA requirements. Use the Si3018 global line-sidedevice for this configuration. This line-side devicesupports both FCC-compliant countries and non-FCC-compliant countries.Globally-compliant, enhanced features line-sidedevice—Targets embedded and voice applicationswith global DAA requirements. Use the Si3019 line-side device for this configuration. The Si3019contains all the features available on the Si3018,plus the following additional features/enhancements:Sixteen selectable ac terminations to increase returnloss and trans-hybrid loss performance.Higher transmit and receive level mode.Selectable 200 Hz low frequency pole.–16 to 13.5 dB digital gain/attenuation adjustment in0.1 dB increments for the transmit and receive paths.Programmable line current/voltage threshold interrupt.Globally-compliant, low-speed only line-sidedevice—Targets embedded 2400 bps soft modemapplications. Use the Si3010 line-side device for thisconfiguration. The Si3010 contains all the featuresavailable on the Si3018, except the transmit andreceive paths are optimized and tested only formodem connect rates up to 2400 bps.