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MT9072AB 데이터시트(PDF) 272 Page - Zarlink Semiconductor Inc |
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MT9072AB 데이터시트(HTML) 272 Page - Zarlink Semiconductor Inc |
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272 / 275 page ![]() MT9072 Data Sheet 272 Zarlink Semiconductor Inc. 19.4 AC Electrical Characteristics - PCM30 and ST-BUS Frame Format In both the transmit and receive directions, PCM30 LSB maps to ST-BUS LSB. Figure 74 - PCM 30 Format Figure 75 - ST-BUS Format 20.0 Applicable Specifications Standard Title T1.102-1993 Digital Heirarchy_Electrical Interfaces T1.231-1993 Layer 1 In-Service Digital Transmission Performance Monitoring T1.403-1995 Network to Customer Installation Metallic Interfaces T1.408-1990 ISDN Primary Rate- Customer Installation Metallic Interfaces TR 62411-1990 Accunet T1.5 Service Description and Interface Specification TA-TSY-000278 Issue1, 1985 Digital Data Systems(DDS)- T1 Digital Multiplexor(T1DM) Requirements G.711 Pulse Code Modulation(PCM) of Voice Frequencies Table 204 - Applicable Telecommunications Specifications FRAME 15 0 14 15 0 TIMESLOT 0 1 30 31 Most Significant Bit (First) Least Significant Bit (Last) BIT 12 3 4 56 7 8 FRAME FRAME FRAME FRAME TIMESLOT TIMESLOT TIMESLOT BIT BIT BIT BIT BIT BIT BIT 2.0 ms (8/2.048) µs 125 µs •• •• •• •• •• •• CHANNEL 31 or 127 0 30 or 126 BIT CHANNEL CHANNEL CHANNEL CHANNEL 31 or 127 0 BIT BIT BIT BIT BIT BIT BIT • • • Least Significant Bit (Last) Most Significant Bit (First) 125 µs 76 5 4 3 2 1 0 (8/2.048 or 8/8.192) µs |
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