Engineering Change Order - NXP Semiconductors
Engineering Change Order
|ECO for ‘M5272C3’ |
|System Description: |M5272C3: Evaluation board Rev. 1.2 |
|ECO Number: |4 |
|Date Created: |4/25/01 5:32:58 PM |
|Date Modified: | |
|Requestor: | |
|Requestor’s Email | |
| | |
|Description of Change: |Modifications for full ethernet functionality |
| | |
|Approved By: |HESD Applications Team |
|EXECUTIVE SUMMARY |
| There is an errata on the M5272C3 evaluation board Rev 1.2 that causes ethernet connectivity issues with some 10BaseT hubs that|
|do not have auto sense polarity detection and correction capability that newer hubs have. If you are using an older hub without |
|this auto sense capability, below is the description of the “blue wire” fixes for the evaluation board. The M5272C3 evaluation |
|board Rev. 1.2 was successfully tested for ethernet functionality with the following layout modification. |
| |
|Future M5272C3 evaluation boards with the Rev 1.4 and 2.x will have the errata fixed. |
| |
|If you cannot make the modifications, please contact. |
|Matrix Design & Manufacturing, Inc. |
|2914 Montopolis Drive #290 |
|Austin, Texas 78744 |
|Phone: (512) 385-9144 |
|Fax: (512) 385-9244 |
|Matrix Design will make the board modifications and return the board. |
|ECO DETAILED INTSTRUCTIONS |
|Schematics modifications |
| |
|On Page 4/14 of Schematics labeled “MCF5272 – Ethernet 100/10BaseT”: |
| |
|-The signals to pins 14 and 16 of T1 (HALO TG110-S050N5) need to be switched so that the TPFOP output of the LXT971L (U7 pin 19) is|
|connected to pin 16 of T1 and TPFON (U7 pin 20) is connected to pin 14 of T1. |
| |
|-The signals to pins 9 and 11 of T1 need to be switched so that TPFIP (U7 pin 23) is connected to pin 11 of T1 and TPFIN (U7 pin |
|24) is connected to pin 9 of T1. |
| |
|Design Layout modifications (i.e. Blue Wire Mods required) |
| |
|Design layout needs to reflect the schematics change. |
| |
|Matrix modifications |
| |
|Lift pins 9, 11, 14, and 16 of T1 device |
|Blue wire from T1 pad 9 to pin 11. |
|Blue wire from T1 pad 11 to pin 9. |
|Blue wire from T1 pad 14 to pin 16. |
|Blue wire from T1 pad 16 to pin 14. |
| |
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