
DATASHEET
PM5349 S/UNI-QUAD
ISSUE 6 | SATURN USER NETWORK INTERFACE | |
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9 PIN DESCRIPTION
9.1Line Side Interface Signals
Pin Name | Type | Pin | Function |
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REFCLK | Input | AC5 | The reference clock input (REFCLK) must provide a |
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| the reference clock by both clock recovery and clock |
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| synthesis circuits. |
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| This pin is shared by all channels. |
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RXD1+ | Differential | E2 | The receive differential data inputs (RXD+, |
RXD1- | PECL | D1 | contain the NRZ bit serial receive stream. The |
RXD2+ | inputs | G1 | receive clock is recovered from the RXD+/- bit |
RXD2- |
| G2 | stream. Please refer to the Operation section for a |
RXD3+ |
| W1 | discussion of PECL interfacing issues. |
RXD3- |
| V2 | This pin is available independently for each channel. |
RXD4+ |
| AA1 | |
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RXD4- |
| Y2 |
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SD1 | Single- | E3 | The Signal Detect pin (SD) indicates the presence |
SD2 | Ended | J3 | of valid receive signal power from the Optical |
SD3 | PECL | U3 | Physical Medium Dependent Device. A PECL high |
SD4 | Input | W3 | indicates the presence of valid data and a PECL low |
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| indicates a loss of signal. It is mandatory that SD be |
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| terminated into the equivalent network that RXD+/- |
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| is terminated into. |
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| This pin is available independently for each channel. |
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RCLK1 | Output | AA13 | The receive byte clock (RCLK) provides a timing |
RCLK2 |
| Y13 | reference for the |
RCLK3 |
| AC14 | RCLK is a divide by eight of the recovered line rate |
RCLK4 |
| AB14 | clock (19.44 MHz). |
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| This pin is available independently for each channel. |
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Proprietary and Confidential to | 12 |