Hardware » History » Version 11
laforge, 05/03/2017 06:40 AM
| 1 | 1 | laforge | h1. Hardware |
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| 2 | |||
| 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 | 8 | laforge | h3. Femtocell SoC (U3) |
| 22 | 4 | laforge | |
| 23 | Broadcomm BCM61610KFB1G (formerly Percello) |
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| 24 | * no information found anywhere |
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| 25 | 9 | laforge | * probably derivative of PRC6100 |
| 26 | ** http://www.node-h.com/en/news/article/Node-H_3GPP_Iu-h_Femtocell_Software_is_Standards_Compliant.php |
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| 27 | ** https://www.s3group.com/semiconductor-solutions/s3-percello-collaborate-produce-latest-femtocell-baseband-processor/ |
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| 28 | * probably derivative of PRC6000 |
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| 29 | ** https://www.bdti.com/InsideDSP/2008/10/15/Percello |
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| 30 | * contains MIPS24Kc core |
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| 31 | 4 | laforge | |
| 32 | 8 | laforge | h3. NAND Flash (U40) |
| 33 | 4 | laforge | |
| 34 | Hynix H27U1G8F2BTR |
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| 35 | * 1Gbit (128MByte) NAND Flash, x8 data bus, 3.3V, 2k page size, 128k erase block, 48pin TSOP1 |
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| 36 | * http://natisbad.org/NAS/refs/Hynix_NAND_128Mo_H27U1G8F2BT.pdf |
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| 37 | |||
| 38 | 5 | laforge | h3. RF Transceiver |
| 39 | 4 | laforge | |
| 40 | Maxim MAX2550 |
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| 41 | * Band I, V, and VIII WCDMA Femtocell Transceiver with GSM Monitoring |
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| 42 | * https://www.maximintegrated.com/en/products/comms/wireless-rf/MAX2550.html |
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| 43 | * https://datasheets.maximintegrated.com/en/ds/MAX2550.pdf |
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| 44 | 1 | laforge | * https://www.maximintegrated.com/en/app-notes/index.mvp/id/5364 |
| 45 | 5 | laforge | |
| 46 | h3. Ethernet Switch |
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| 47 | |||
| 48 | 7 | laforge | Atheros AR8236-AL1A |
| 49 | * 6-port Fast Ethernet Switch |
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| 50 | 1 | laforge | * https://wikidevi.com/files/Atheros/specsheets/AR8326.pdf |
| 51 | * http://jhongtech.com/DOWN/ATHEROS--AR8236.pdf |
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| 52 | 8 | laforge | |
| 53 | h3. AC/DC switching power supply controller |
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| 54 | |||
| 55 | * https://www.power.com/sites/default/files/product-docs/linkcv_family_datasheet.pdf |
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| 56 | 7 | laforge | |
| 57 | 5 | laforge | h2. Connectors |
| 58 | |||
| 59 | h3. Mainboard J2 |
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| 60 | |||
| 61 | * 12pos 2x6 1.27mm pitch header |
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| 62 | * unpopulated |
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| 63 | 10 | laforge | * likely (MIPS) JTAG and/or console |
| 64 | 6 | laforge | |
| 65 | h3. Mainboard J3 |
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| 66 | |||
| 67 | * 30pos 0.5mm pitch FPC |
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| 68 | * connects to PSU Board CON1 |
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| 69 | * likely LED + Ethernet |
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| 70 | 5 | laforge | |
| 71 | h3. Mainboard J4 |
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| 72 | |||
| 73 | * 3pos 2.54mm pitch hader, center pos missing |
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| 74 | * used to supply 230V AC from mainboard to PSU board |
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| 75 | * connects to PSU Board J4 |
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| 76 | |||
| 77 | h3. Mainboard J5 |
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| 78 | |||
| 79 | * 8pos 2x4 1.27mm pitch SMD header |
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| 80 | 11 | laforge | * DC power input |
| 81 | 1 | laforge | * connects to PSU-Board J |
| 82 | 11 | laforge | |
| 83 | |_.Pin|_.Function| |
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| 84 | |1|4V DC (supply for LDOs on mainboard)| |
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| 85 | |2|4V DC (supply for LDOs on mainboard)| |
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| 86 | |3|GND| |
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| 87 | |4|GND| |
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| 88 | |5|GND| |
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| 89 | |6|GND| |
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| 90 | |7|3.3V DC (regulated on PSU board for Ethernet Switch)| |
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| 91 | |8|3.3V DC (regulated on PSU board for Ethernet Switch)| |
