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| PM5349 |
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DATASHEET |
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ISSUE 6 |
| SATURN USER NETWORK INTERFACE |
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Pin Name | Type | Pin | Function |
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A[10]/TRS | Input | A11 | The test register select (TRS) signal selects |
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| between normal and test mode register accesses. |
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| TRS is high during test mode register accesses, |
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| and is low during normal mode register accesses. |
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RSTB | Input | B10 | The |
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| asynchronous | |
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| Schmitt triggered input with an integral |
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| resistor. |
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ALE | Input | C11 | The address latch enable (ALE) is |
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| latches the address bus A[7:0] when low. When | |
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| ALE is high, the internal address latches are |
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| transparent. It allows the |
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| to a multiplexed address/data bus. ALE has an |
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| integral |
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INTB | Output | C10 | The |
| Open- |
| when a |
| drain |
| that source is unmasked. The |
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| enabled to report many alarms or events via |
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| interrupts. |
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| Examples of interrupt sources are loss of signal |
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| (LOS), loss of frame (LOF), line AIS, line remote |
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| defect indication (LRDI) detect, loss of pointer |
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| (LOP), path AIS, path remote defect indication |
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| detect and others. |
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| INTB is tristated when the interrupt is acknowledged |
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| via an appropriate register access. INTB is an open |
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| drain output. |
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Proprietary and Confidential to | 24 |