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XRT83SL314 датащи(PDF) 29 Page - Exar Corporation |
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XRT83SL314 датащи(HTML) 29 Page - Exar Corporation |
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29 / 83 page ![]() xr XRT83SL314 14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT REV. 1.0.1 26 2.9 RPOS/RNEG/RCLK The digital output data can be programmed to either single rail or dual rail formats. Figure 16 is a timing diagram of a repeating "0011" pattern in single-rail mode. Figure 17 is a timing diagram of the same fixed pattern in dual rail mode. FIGURE 16. SINGLE RAIL MODE WITH A FIXED REPEATING "0011" PATTERN FIGURE 17. DUAL RAIL MODE WITH A FIXED REPEATING "0011" PATTERN 2.10 RxMUTE (Receiver LOS with Data Muting) The receive muting function can be selected by setting RxMUTE to "1" in the appropriate global register. If selected, any channel that experiences an RLOS condition will automatically pull RPOS and RNEG "Low" to prevent data chattering. If RLOS does not occur, the RxMUTE will remain inactive until an RLOS on a given channel occurs. The default setting for RxMUTE is "0" which is disabled. A simplified block diagram of the RxMUTE function is shown in Figure 18. FIGURE 18. SIMPLIFIED BLOCK DIAGRAM OF THE RXMUTE FUNCTION RCLK RPOS 00 0 1 1 RCLK RPOS 00 0 1 1 RNEG RLOS RxMUTE RPOS RNEG |
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