Hardware » History » Version 18
tsaitgaist, 05/10/2017 10:19 AM
add UART_RXD
| 1 | 1 | laforge | h1. Hardware |
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| 2 | |||
| 3 | 17 | laforge | Teardown video of UK version: https://www.youtube.com/watch?v=RnI5dhKhYFw |
| 4 | |||
| 5 | 3 | laforge | h2. Physical Setup / Board Stacking |
| 6 | 2 | laforge | |
| 7 | 1 | laforge | The hardware consists of two circuit boards: |
| 8 | |||
| 9 | * Top board: AC/DC power supply and Ethernet switch |
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| 10 | * Bottom board: Actual Femtocell mainboard |
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| 11 | |||
| 12 | The two boards are sandwiched together by the following connections: |
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| 13 | * 6-pin fine-pitch connector (most likely for DC power) |
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| 14 | * flexible printed circuit cable (most likely for Ethernet MII/RMII) |
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| 15 | * two large sheet metal parts for ground and/or thermal connection |
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| 16 | |||
| 17 | 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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| 18 | |||
| 19 | 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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| 20 | 4 | laforge | |
| 21 | h2. Major Components |
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| 22 | |||
| 23 | 8 | laforge | h3. Femtocell SoC (U3) |
| 24 | 4 | laforge | |
| 25 | Broadcomm BCM61610KFB1G (formerly Percello) |
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| 26 | * no information found anywhere |
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| 27 | 9 | laforge | * probably derivative of PRC6100 |
| 28 | ** http://www.node-h.com/en/news/article/Node-H_3GPP_Iu-h_Femtocell_Software_is_Standards_Compliant.php |
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| 29 | ** https://www.s3group.com/semiconductor-solutions/s3-percello-collaborate-produce-latest-femtocell-baseband-processor/ |
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| 30 | * probably derivative of PRC6000 |
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| 31 | ** https://www.bdti.com/InsideDSP/2008/10/15/Percello |
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| 32 | * contains MIPS24Kc core |
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| 33 | 4 | laforge | |
| 34 | 8 | laforge | h3. NAND Flash (U40) |
| 35 | 4 | laforge | |
| 36 | Hynix H27U1G8F2BTR |
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| 37 | 16 | laforge | * 1Gbit (256MByte) NAND Flash, x8 data bus, 3.3V, 2k page size, 128k erase block, 48pin TSOP1 |
| 38 | 4 | laforge | * http://natisbad.org/NAS/refs/Hynix_NAND_128Mo_H27U1G8F2BT.pdf |
| 39 | |||
| 40 | 5 | laforge | h3. RF Transceiver |
| 41 | 4 | laforge | |
| 42 | Maxim MAX2550 |
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| 43 | * Band I, V, and VIII WCDMA Femtocell Transceiver with GSM Monitoring |
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| 44 | * https://www.maximintegrated.com/en/products/comms/wireless-rf/MAX2550.html |
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| 45 | * https://datasheets.maximintegrated.com/en/ds/MAX2550.pdf |
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| 46 | 1 | laforge | * https://www.maximintegrated.com/en/app-notes/index.mvp/id/5364 |
| 47 | 5 | laforge | |
| 48 | h3. Ethernet Switch |
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| 49 | |||
| 50 | 7 | laforge | Atheros AR8236-AL1A |
| 51 | * 6-port Fast Ethernet Switch |
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| 52 | 1 | laforge | * https://wikidevi.com/files/Atheros/specsheets/AR8326.pdf |
| 53 | * http://jhongtech.com/DOWN/ATHEROS--AR8236.pdf |
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| 54 | 8 | laforge | |
| 55 | h3. AC/DC switching power supply controller |
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| 56 | |||
| 57 | * https://www.power.com/sites/default/files/product-docs/linkcv_family_datasheet.pdf |
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| 58 | 7 | laforge | |
| 59 | 14 | laforge | h3. RF LDO (WU1) |
| 60 | 13 | laforge | |
| 61 | 14 | laforge | * AP2318 Adjustable ULDO in DFN3x3-8 |
| 62 | 13 | laforge | ** https://www.diodes.com/assets/Datasheets/AP2318.pdf |
| 63 | |||
| 64 | 5 | laforge | h2. Connectors |
| 65 | |||
| 66 | h3. Mainboard J2 |
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| 67 | |||
| 68 | * 12pos 2x6 1.27mm pitch header |
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| 69 | * unpopulated |
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| 70 | 18 | tsaitgaist | * likely (MIPS) JTAG and UART |
| 71 | 6 | laforge | |
| 72 | 15 | laforge | |_.Pin|_.Function| |
| 73 | |1|GND| |
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| 74 | |2|3V3| |
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| 75 | |3|| |
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| 76 | |4|| |
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| 77 | |5|| |
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| 78 | |6|| |
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| 79 | 18 | tsaitgaist | |7|UART_RXD| |
| 80 | 15 | laforge | |8|| |
| 81 | |9|UART_TXD| |
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| 82 | |10|| |
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| 83 | 1 | laforge | |11|| |
| 84 | |12|| |
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| 85 | 18 | tsaitgaist | |
| 86 | By default the UART port only shows the [[Bootlog]], but no terminal console is provided. |
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| 87 | The boot sequence can also not be interrupted. |
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| 88 | 15 | laforge | |
| 89 | 6 | laforge | h3. Mainboard J3 |
| 90 | |||
| 91 | * 30pos 0.5mm pitch FPC |
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| 92 | * connects to PSU Board CON1 |
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| 93 | 12 | laforge | * likely LED + AR8236 (R)MII + AR8236 SPI + AR8236 UART |
| 94 | 5 | laforge | |
| 95 | h3. Mainboard J4 |
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| 96 | |||
| 97 | * 3pos 2.54mm pitch hader, center pos missing |
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| 98 | * used to supply 230V AC from mainboard to PSU board |
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| 99 | * connects to PSU Board J4 |
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| 100 | |||
| 101 | h3. Mainboard J5 |
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| 102 | |||
| 103 | * 8pos 2x4 1.27mm pitch SMD header |
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| 104 | 11 | laforge | * DC power input |
| 105 | 1 | laforge | * connects to PSU-Board J |
| 106 | 11 | laforge | |
| 107 | |_.Pin|_.Function| |
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| 108 | |1|4V DC (supply for LDOs on mainboard)| |
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| 109 | |2|4V DC (supply for LDOs on mainboard)| |
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| 110 | |3|GND| |
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| 111 | |4|GND| |
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| 112 | |5|GND| |
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| 113 | |6|GND| |
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| 114 | |7|3.3V DC (regulated on PSU board for Ethernet Switch)| |
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| 115 | 1 | laforge | |8|3.3V DC (regulated on PSU board for Ethernet Switch)| |
| 116 | 12 | laforge | |
| 117 | h3. PSU-Board U9 |
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| 118 | |||
| 119 | Yellow RJ45 mag-jack, connected to Port 0 of AR8236 |
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| 120 | |||
| 121 | h3. PSU-Board U8 |
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| 122 | |||
| 123 | Grey RJ45 mag-jack, connected to Port 3 of AR8236 |
