Differences

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--- projects:dslam [2021/08/31 22:04] – created q3k
+++ projects:dslam [2024/04/05 12:22] (current) – [FXS] q3k
@@ Line 5: / Line 5: @@
 [[people:mciancia:start]], [[people:implr:start]] and [[people:q3k:start]] are looking at this.
+=== Access ===
+Lab ADSL DSLAM (HiX 5620 A50) can be reached by  ''telnet 185.236.240.67 2137'' from boston-packets or the space LAN.
+=== Downloads ===
 Documentation and firmware (search engine proof):
@@ Line 12: / Line 17: @@
 YXIK
 </code>
+==== FXS ====
+We have a companion FXS rack device, Audio Codes MP-124D/FXS/AC. It's currently at q3k's place.
+=== Components ===
+  * Main MCU: PowerQUICC MPC860PZQ80D4
+  * Line interface: 12x PEB3264 and PEB4266
+  * Custom ASICs (codecs?): 6x AC482-C (three more footprints unpopulated)
+=== PSU Recap ===
+The output smoothing caps on the PSU (APSI-605AC Rev.C) are bad. Here's the values jotted down so that q3k can order some new ones:
+^ Refdes ^ Capacitance ^ Voltage ^ Diameter ^ Height ^ Lead spacing ^ Replacement ^
+| C9, C10, C14 | 470uF | 63V | 16mm | 20mm | 7.5mm | EEU-FS1K471S |
+| C15, C17, | 220uF | 100V | 16mm | 25mm | 7.5mm | UHE2A221MHD6TN |
+| C19, C20, C22 | 1200uF | 10V | 10mm | 20mm | 5mm | EEU-FS1E122B |
+C19 is bulged. C10 is burst. The rest look fine (after desoldering, no, the bottom plugs are also slightly pushed out on some of the others - good call to replace them regardless), but should be replaced regardless.
+There's also a primary side 100uF/400V cap (C13) that has been measured to be ~97uF, which is good enough so is left alone for now.
+=== JTAG Pinout ===
+Refdes J8 'JTAG'.
+^ Function ^ Pin ^ Pin ^ Function ^
+|    Diode |   1 |   2 | Diode    |
+|    Diode |   3 |   4 | GND      |
+|     3v3? |   5 |   6 | GND      |
+|     Hi-Z |   7 |   8 | GND      |
+|     Hi-Z |   9 |  10 | GND      |
+|    Diode |  11 |  12 | GND      |
+|     Hi-Z |  13 |  14 | Hi-Z     |
+|     Hi-Z |  15 |  16 | Diode    |
+|     Hi-Z |  17 |  18 | Hi-Z     |
+|     Hi-Z |  19 |  20 | Hi-Z     |
+Diode means a diode was detected (0.3V-1.6V) from that pin to ground. Hi-z means there didn't seem to be a diode between that pin to ground. This looks like a custom JTAG connector, q3k will attempt to discover the pinout once the PSU is fixed.
+There's also a BDM connector on board.