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PM5347 Datasheet(PDF) 261 Page - PMC-Sierra, Inc |
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PM5347 Datasheet(HTML) 261 Page - PMC-Sierra, Inc |
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261 / 302 page ![]() PM5347 S/UNI-PLUS DATA SHEET PMC-941033 ISSUE 6 SATURN USER NETWORK INTERFACE PLUS PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE 245 transmit stream (TTOHEN must be sampled high during the first bit position to enable the error insertion mask). Figure 27 - Transport Overhead Orderwire and User Channel Insertion TOWCLK TOHFP E1, F1, E2 B1 B2 B3 B5 B6 B7 B8 TSOW TSUC TLOW B4 TOHFP TOWCLK approx 750 ns The Transport Overhead Orderwire and User Channel Insertion diagram (Figure 27) shows the relationship between the TSOW, TLOW and TSUC serial data inputs and their associated clock TOWCLK. TOWCLK is a 72 kHz 50% duty cycle clock that is gapped to produce a 64 kHz nominal rate and is aligned as shown in the timing diagram. The E1, E2 and F1 bytes shifted into the S/UNI- PLUS on TSOW, TLOW and TSUC in the frame shown are inserted in the corresponding transport overhead channels in the next frame. |
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