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TLK2201BRCP Datasheet(PDF) 8 Page - Texas Instruments |
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TLK2201BRCP Datasheet(HTML) 8 Page - Texas Instruments |
8 / 24 page www.ti.com DXX.X K28.5 DXX.X DXX.X K28.5 K28.5 DXX.X DXX.X DXX.X DXX.X DXX.X K28.5 DXX.X DXX.X K28.5 K28.5 DXX.X DXX.X 31Bit Times MaxReceive PathLatency WorstCase MisalignedK28.5 MisalignmentCorrected INPUTDATA RBC0 RBC1 RD(0−9) SYNC CorruptData 30Bit Times(Max) DATA RECEPTION LATENCY 10BitCode RXP,RXN RD(0−9) RBC0 10BitCode td(Rx latency) LOSS OF SIGNAL DETECTION TLK2201B TLK2201BI SLLS585C – NOVEMBER 2003 – REVISED FEBRUARY 2008 Figure 5. Word Realignment Timing Characteristics Waveforms Systems that do not require framed data may disable byte alignment by tying SYNCEN low. When a SYNC character is detected, the SYNC signal is brought high and is aligned with the K28.5 character. The duration of the SYNC pulse is equal to the duration of the data when in TBI mode. When in DDR mode the SYNC pulse is present for the entire RBC0 period. The serial to parallel data latency is the time from when the first bit arrives at the receiver until it is output in the aligned parallel word with RD0 received as first bit. The minimum latency in TBI mode is 21 bit times and the maximum latency is 31 bit times. The minimum latency in DDR mode is 27 bit times and maximum latency is 34 bit times. Figure 6. Receiver Latency – TBI Normal Mode Shown These devices have a loss of signal (LOS) detection circuit for conditions where the incoming signal no longer has sufficient voltage level to keep the clock recovery circuit in lock. The LOS is intended to be an indication of gross signal error conditions, such as a detached cable or no signal being transmitted, and not an indication of signal coding health. Under a PRBS serial input pattern, LOS is high for signal amplitudes greater than 150 mV. The LOS is low for all amplitudes below 50 mV. Between 50 mV and 150 mV, LOS is undetermined. 8 Submit Documentation Feedback Copyright © 2003–2008, Texas Instruments Incorporated Product Folder Link(s): TLK2201B TLK2201BI |
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