FreeCalypso > hg > fc-sim-sniff

comparison doc/Sniffing-hw-setup @ 48:1068f9fd41d5

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
doc: project rename
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 21 Sep 2023 06:31:34 +0000
parents f1c3dd2173d3
children 8a3003860cf8
comparison
equal deleted inserted replaced
47:7c9bf72d460f 48:1068f9fd41d5
1 The hardware setup for SIM sniffing with SIMtrace3 consists of the following 1 The hardware setup for SIM interface sniffing with FC SIMsniff consists of the
2 components: 2 following components:
3 3
4 * The same SIMtrace FPC cables (going from a SIM socket to the 6-pin FPC 4 * The same SIMtrace FPC cables (going from a SIM socket to the 6-pin FPC
5 connector) that were originally developed for SIMtrace1/2 and are sold by 5 connector) that were originally developed for SIMtrace1/2 and are sold by
6 Sysmocom; 6 Sysmocom;
7 7
46 "SIMtrace-ice multivolt sniffer", design files in boards/mv-sniffer directory. 46 "SIMtrace-ice multivolt sniffer", design files in boards/mv-sniffer directory.
47 The only active component on the mv-sniffer board is a Nexperia 74LVC4T3144 dual 47 The only active component on the mv-sniffer board is a Nexperia 74LVC4T3144 dual
48 supply logic voltage level translator IC, powered from SIM_VCC on its A side 48 supply logic voltage level translator IC, powered from SIM_VCC on its A side
49 and from Icestick board +3.3V rail on its B side. 49 and from Icestick board +3.3V rail on its B side.
50 50
51 The mv-sniffer PCB is currently on its way to FreeCalypso HQ from the PCB fab 51 The mv-sniffer PCB has been fabricated and received at FreeCalypso HQ, but we
52 in China, and once the PCB arrives, assembly will require another trip to 52 still need to get it assembled, which will require at least one trip to
53 Technotronix. Once we have this board assembled, we should have a working 53 Technotronix, or maybe even two trips. Once we have this board assembled, we
54 SIMtrace3 sniffing path that is fully compatible with all 3 voltage classes, 54 should have a working SIM sniffing path that is fully compatible with all 3
55 per the original intent of SIMtrace3 project. 55 voltage classes, per the original intent of FC SIMsniff project.
56 56
57 HW setup version 2 57 HW setup version 2
58 ================== 58 ==================
59 59
60 (a little more distant, but will be needed before wider spread) 60 (a little more distant, but will be needed before wider spread)
61 61
62 The solution with separate sim-fpc-pasv and mv-sniffer boards is expected to be 62 The solution with separate sim-fpc-pasv and mv-sniffer boards is expected to be
63 quite inconvenient because of the number of pieces required - clutter on the lab 63 quite inconvenient because of the number of pieces required - clutter on the lab
64 bench - plus poor electrical design with jumper wires between the two boards 64 bench - plus poor electrical design with jumper wires between the two boards
65 extending the electrical length of the SIM bus before the LVC buffer. In the 65 extending the electrical length of the SIM bus before the LVC buffer. In the
66 fully polished version of SIMtrace3, these two adapter boards will need to be 66 fully polished version of FC SIMsniff, these two adapter boards will need to be
67 combined into one. The final SIMtrace3 sniffer pod is expected to be a single 67 combined into one. The final FreeCalypso SIMsniff pod is expected to be a
68 board (still very simple and low cost) featuring the following components: 68 single board (still very simple and low cost) featuring the following
69 components:
69 70
70 1) SIMtrace FPC connector 71 1) SIMtrace FPC connector
71 2) SIM socket 72 2) SIM socket
72 3) 74LVC4T3144 buffer IC 73 3) 74LVC4T3144 buffer IC
73 4) SIM bus solidly connected between components 1, 2 and 3 74 4) SIM bus solidly connected between components 1, 2 and 3