Hardware » History » Version 7
laforge, 05/02/2017 09:24 PM
1 | 1 | laforge | h1. Hardware |
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3 | 3 | laforge | h2. Physical Setup / Board Stacking |
4 | 2 | laforge | |
5 | 1 | laforge | The hardware consists of two circuit boards: |
6 | |||
7 | * Top board: AC/DC power supply and Ethernet switch |
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8 | * Bottom board: Actual Femtocell mainboard |
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9 | |||
10 | The two boards are sandwiched together by the following connections: |
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11 | * 6-pin fine-pitch connector (most likely for DC power) |
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12 | * flexible printed circuit cable (most likely for Ethernet MII/RMII) |
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13 | * two large sheet metal parts for ground and/or thermal connection |
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14 | |||
15 | It is thus not very straight forward to operate the opened device in a safe way (i.e. without live AC line voltage present). |
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16 | |||
17 | We will be working on a way to operate it with injected safe low DC voltage, but that is still TBD. |
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18 | 4 | laforge | |
19 | h2. Major Components |
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20 | |||
21 | h3. Femtocell SoC |
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22 | |||
23 | Broadcomm BCM61610KFB1G (formerly Percello) |
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24 | * no information found anywhere |
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25 | |||
26 | h3. NAND Flash |
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27 | |||
28 | Hynix H27U1G8F2BTR |
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29 | * 1Gbit (128MByte) NAND Flash, x8 data bus, 3.3V, 2k page size, 128k erase block, 48pin TSOP1 |
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30 | * http://natisbad.org/NAS/refs/Hynix_NAND_128Mo_H27U1G8F2BT.pdf |
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31 | |||
32 | 5 | laforge | h3. RF Transceiver |
33 | 4 | laforge | |
34 | Maxim MAX2550 |
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35 | * Band I, V, and VIII WCDMA Femtocell Transceiver with GSM Monitoring |
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36 | * https://www.maximintegrated.com/en/products/comms/wireless-rf/MAX2550.html |
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37 | * https://datasheets.maximintegrated.com/en/ds/MAX2550.pdf |
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38 | 1 | laforge | * https://www.maximintegrated.com/en/app-notes/index.mvp/id/5364 |
39 | 5 | laforge | |
40 | h3. Ethernet Switch |
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41 | |||
42 | 7 | laforge | Atheros AR8236-AL1A |
43 | * 6-port Fast Ethernet Switch |
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44 | * https://wikidevi.com/files/Atheros/specsheets/AR8326.pdf |
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45 | * http://jhongtech.com/DOWN/ATHEROS--AR8236.pdf |
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46 | |||
47 | 5 | laforge | h2. Connectors |
48 | |||
49 | h3. Mainboard J2 |
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50 | |||
51 | * 12pos 2x6 1.27mm pitch header |
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52 | * unpopulated |
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53 | 1 | laforge | * likely JTAG and/or console |
54 | 6 | laforge | |
55 | h3. Mainboard J3 |
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56 | |||
57 | * 30pos 0.5mm pitch FPC |
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58 | * connects to PSU Board CON1 |
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59 | * likely LED + Ethernet |
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60 | 5 | laforge | |
61 | h3. Mainboard J4 |
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62 | |||
63 | * 3pos 2.54mm pitch hader, center pos missing |
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64 | * used to supply 230V AC from mainboard to PSU board |
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65 | * connects to PSU Board J4 |
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66 | |||
67 | h3. Mainboard J5 |
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68 | |||
69 | * 8pos 2x4 1.27mm pitch SMD header |
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70 | * likely DC power |
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71 | * connects to PSU-Board J |