DS3161 datasheet(21/384 Pages) MAXIM

21 / 384 page

DS3161/DS3162/DS3163/DS3164

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Two programmable I/O pins per port

3.21 Subrate Features (Fractional DS3/E3)

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Independent per port built-in support for subrate DS3 or E3

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Independent subrate operation for both RX and TX data paths

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Subrate operation for each channel is totally independent from the other channels’ operation, i.e. all subrate

functions within the device are mutually exclusive

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Three distinct subrate algorithms:

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(FFRAC) Externally controlled with DS3 or E3 payload manipulating capability

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(XFRAC) Externally controlled with flexible DS3 or E3 data rate reduction capability

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(IFRAC) Internally controlled with simple DS3 or E3 data rate reduction capability

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Subrate algorithm selection is on per port basis

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Internal subrate mechanism allows down to bit-level granularity of the DS3 or E3 payload

3.22 Test Features

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Five pin JTAG port

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All functional pins are inout pins in JTAG mode

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Standard JTAG instructions: Sample/Preload, Bypass, Extest, Clamp, HighZ, Idcode

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RAM BIST on all internal RAM

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Hi-Z pin to force all digital output and inout pins into HIZ

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TEST pin for manufacturing scan test modes

DS3161 Datasheet(PDF) 21 Page - Maxim Integrated Products