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PM7347 Datasheet(PDF) 84 Page - PMC-Sierra, Inc |
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PM7347 Datasheet(HTML) 84 Page - PMC-Sierra, Inc |
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84 / 341 page  S/UNI®-JET Data Sheet Released Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use 84 Document ID: PMC-1990267, Issue 3 DS27_53 The DS27_53 bit is used to select between the long data structure (27-byte words in 16-bit mode and 53-byte words in 8-bit mode) and the short data structure (26-byte words in 16-bit mode and 52-byte words in 8-bit mode) on the ATM interface. When DS27_53 is set to logic one, the RXCP-50 and TXCP-50 blocks are configured to operate with the long data structure; when DS27_53 is set to logic zero, the RXCP-50 and TXCP-50 are configured to operate with the short data structure. 8KREFO The 8KREFO bit is used, in conjunction with the PLCPEN bit in the SPLR Configuration Register to select the function of the REF8KO/RPOHFP/RFPO/RMFPO[x] output pin. When PLCPEN is logic one, the RPOHFP function will be selected and 8KREFO has no effect. (Note: RPOHFP is inherently an 8kHz reference). If PLCPEN is logic zero and if 8KREFO becomes logic one, then an 8 kHz reference will be derived from the RCLK[x] signal and output on REF8KO. If 8KREFO and PLCPEN are both logic zero, then the RXMFPO register bit in the S/UNI-JET Configuration 2 Register will select either the RFPO or RMFPO function. |
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