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SPX1585T

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File Size : 116 KB Manufacturer:Sipex Description:COMPRESSED GCI MODE In GCI compressed mode, one GCI frame consists of 8 GCI time slots, the Data Upstream Interface transmits four 8-bit bytes per GCI time slot. They are: - Two voice data bytes from the A-law or µ-law compressor for two different channel, for easy description, we name the two channels as channel A and channel B. The compressed voice data bytes for channel A and B are 8-bit wide; - One Monitor channel byte, which is used for reading control data from the device for Channel A and B; - One C/I channel byte, which contains a 6 bit width C/I channel sub- byte together with an MX bit and an MR bit. All real time signaling infor- mation is carried on the C/I channel sub-byte. The MX (Monitor Trans- mit) bit and MR (Monitor Receive) bit are used for handshaking func- tions for Channel A and B. Both MX and MR are active low. Transmit logic controls the transmission of data onto the GCI bus. The data structure of the Data Downstream is as same as that of Upstream. The Data Downstream Interface logic controls the reception of data bytes from the GCI bus. The two compressed voice channel data bytes of the GCI time slot are transferred to the A-law or µ-law ex- pansion logic circuit. The expanded data is passed to the receive path of the signal processor. The Monitor Channel and C/I Channel bytes are trans- ferred to the GCI control logic for processing. Figure 1 shows the overall compressed GCI frame structure.


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型号：SPX1585T 厂家：Sipex 封装：TO263-3 批号：537 数量：302 说明：QQ：104735486 611606076


运费：运费到付10.00元（快递）20.00元（顺风）所在地：深圳新旧程度：