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XRT4500CV Datasheet(PDF) 59 Page - Exar Corporation |
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XRT4500CV Datasheet(HTML) 59 Page - Exar Corporation |
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59 / 99 page ![]() XRT4500 áç áç áç áç MULTIPROTOCOL SERIAL NETWORK INTERFACE IC REV. 1.0.7 56 The “Clock Inversion” feature is also available if the XRT4500 is operating in the “DTE” Mode. Figure 29 presents an illustration of a DTE Mode XRT4500, when it is configured to invert the TXC clock signal. The Benefits of the “Clock Inversion” Feature In Section 1.3.4 of this document, a lengthy discussion, regarding the “2-Clock/Propagation Delay” phenomenon is presented. In this Section, the “Echo-Clock” Fea- ture was also presented as a possible solution to the “2-Clock/Propagation Delay” phenomenon. However, the “Echo-Clock” feature has a drawback. If a “DCE Equipment” manufacturer were to interface his/her equipment to a DTE Terminal that does not support FIGURE 28. ILLUSTRATION OF THE DCE MODE XRT4500 BEING CONFIGURED TO INVERT THE TXC SIGNAL SCC (R) SCC (L) XRT4500 XRT4500 RX1 TX1 RX2 TX2 RX3 TX3 RX2 TX2 RX1 TX1 RXD_OUT RXC TXC SCTE_IN TXD_IN TXD SCTE TXC_IN RXC_IN RXD_IN 60 67 73 74 1 78 79 77 76 70 71 64 65 63 62 1 74 68 67 60 63 62 64 65 70 71 77 76 78 79 TXD SCTE TXC RXC RXD DCE DTE FIGURE 29. ILLUSTRATION OF THE DTE MODE XRT4500 BEING CONFIGURED TO INVERT THE TXC SIGNAL SCC (R) SCC (L) XRT4500 XRT4500 RX1 TX1 RX2 TX2 RX3 TX3 RX2 TX2 RX1 TX1 RXD RXC TXC SCTE_IN TXD_IN TXD SCTE TXC_IN RXC_IN RXD_IN 60 67 73 74 1 78 79 77 76 70 71 64 65 63 62 1 74 68 67 60 63 62 64 65 70 71 77 76 78 79 TXD SCTE TXC RXC RXD DCE DTE |
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