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BT8376EPF датащи(PDF) 60 Page - Synaptics Incorporated. |
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BT8376EPF датащи(HTML) 60 Page - Synaptics Incorporated. |
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60 / 323 page ![]() 2.0 Circuit Description Bt8370/8375/8376 2.5 Receive System Bus Fully Integrated T1/E1 Framer and Line Interface 2-32 Conexant N8370DSE 2.5 Receive System Bus The Receive System Bus (RSB) provides a high-speed, serial interface between the RCVR and the system bus. The system bus is compatible with the Mitel ST-Bus, the Siemens PEB Bus, and the AT&T CHI Bus, and directly connects to other CONEXANT serial TDM bus devices with no need for any external circuitry. The RSB has the following seven pins: Receive System Bus Clock (RSBCKI), Receive PCM Data (RPCMO), Receive Signaling Data (RSIGO), Receive Frame Sync (RFSYNC), Receive Multiframe Sync (RMSYNC), Receive Time Slot Indicator (RINDO), and Signaling Freeze (SIGFRZ). Figure 2-15 illustrates the relationship between these signals. (Pin definitions are provided in Table 1-1, Hardware Signal Definitions.) RSB data outputs can be configured to output on the rising or falling edge of RSBCKI. See the Receive System Bus Configuration register [RSB_CR; addr 0D1]. Figure 2-15. RSB Waveforms NOTE(S): The Receive Multiframe Sync (RMSYNC) occurs every 6 ms for 48 T1 or 48 E1 frames. RSBCKI 12 3 4 5 6 7 8 1 2 3 4 5 6 7 8 12 AB C D A B C D A B C D A B C D AB 1 2 3 4 5 6 78 F 1 2 3 45 6 7 81 A B C D AB C D X AB C D A B C DA RPCMO RINDO RSIGO RPCMO RINDO RSIGO SIGFRZ RFSYNC RMSYNC Frame 48 TS 31 Frame 1 TS 0 Frame 48 TS 24 Frame 1 TS 1 |
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