PirelliDPL10 » History » Version 13
steve-m, 02/19/2016 10:48 PM
add link to rf switch
| 1 | 1 | steve-m | = Pirelli DP-L10 = |
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| 2 | |||
| 3 | The Pirelli DP-L10 is a tripleband GSM/Wifi VoIP dualmode phone, which was developed by Pirelli Broadband Solutions and manufactured by Foxconn. |
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| 4 | |||
| 5 | It was branded and sold by quite a few operators: |
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| 6 | |||
| 7 | * Pirelli DP-L10 |
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| 8 | * Arcor Twintel DP-L10 |
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| 9 | * Telekom TC-300 |
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| 10 | * sipgate Pirelli Discus !DualPhone DP-L10 |
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| 11 | * free.fr Black |
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| 12 | * Cubic Mobile DP-L10 |
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| 13 | * Tovo t450g |
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| 14 | * Eurotef-M |
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| 15 | |||
| 16 | The phones are still available as new at various places like eBay, Pollin or rebelsimcard.com. |
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| 17 | 7 | steve-m | For more information on the original firmware see the [http://wiki.ip-phone-forum.de/telefone:t-one_tc300:start ip-phone-forum wiki] (german). |
| 18 | 1 | steve-m | |
| 19 | == Hardware == |
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| 20 | |||
| 21 | * CPU/DBB: TI Calypso (D751992AZHH) |
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| 22 | * ABB: TI Iota (TWL3014) |
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| 23 | * GSM Transceiver: TI Rita (TRF6151) |
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| 24 | * PA: SKY77328-13 |
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| 25 | * Flash/SRAM: Spansion S71PL129NC0 128MBit/64MBit |
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| 26 | * Wifi: Marvell 88W8385 802.11 MAC |
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| 27 | * Marvell 88W8015 802.11b/g transceiver |
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| 28 | * Winbond W56940 ringtone chip |
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| 29 | * Sunplus SPCA552E multimedia controller |
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| 30 | * LSI-65194A1 ASIC (seems to be a DSP for VoIP en-/decoding) |
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| 31 | * Silabs CP2102 USB UART (connected to UART_IRDA of the Calypso) |
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| 32 | |||
| 33 | 3 | steve-m | === PCB === |
| 34 | 1 | steve-m | |
| 35 | 3 | steve-m | The pcb is labelled with "T60N925", and the Foxconn internal project name seems to be "T60N925.00".[[BR]] |
| 36 | There are no schematics of this phone, however, steve-m has grinded down one of those boards, see the pictures of all layers [http://www.steve-m.de/pictures/pirelli_dpl10/ here]. |
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| 37 | |||
| 38 | 2 | steve-m | [[Image(dpl10_front_small.jpg)]][[BR]] |
| 39 | [http://www.steve-m.de/pictures/dpl10_front.jpg large version] |
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| 40 | 1 | steve-m | |
| 41 | [[Image(dpl10_back_small.jpg)]][[BR]] |
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| 42 | 3 | steve-m | [http://www.steve-m.de/pictures/dpl10_back.jpg large version][[BR]] |
| 43 | [http://www.steve-m.de/pictures/rf_frontend.jpg large version of RF part] |
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| 44 | |||
| 45 | 6 | steve-m | === RF path === |
| 46 | |||
| 47 | Since this phone is a tripleband design, it uses 3 rx filters, connected to the respective Rita inputs: |
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| 48 | |||
| 49 | * Epcos B7820 for GSM900 |
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| 50 | * Epcos B7821 for DCS1800 |
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| 51 | * Epcos B7851 for DCS1900 |
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| 52 | |||
| 53 | 13 | steve-m | Those are connected to an unknown "T 636 / 5475" antenna switch. The pinout of this switch however is identical with the Panasonic [http://www.panasonic.com/industrial/components/pdf/AEA0000CE1.pdf EZFL897TB11C]. |
| 54 | 6 | steve-m | The control voltage inputs of the switch are connected to the TSPACT outputs of the Calypso DBB through a Fairchild NC7NZ34 triple-buffer. |
| 55 | |||
| 56 | [[Image(dpl10_buffer.jpg)]] |
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| 57 | |||
| 58 | 9 | steve-m | === Phone as clock generator === |
| 59 | |||
| 60 | The idea to use an OsmocomBB-driven phone as an accurate clock source, e.g. for the USRP, by synchronizing the clock to a cell of a commercial operator was [http://lists.osmocom.org/pipermail/baseband-devel/2010-April/000322.html discussed] on the mailing list a while back. Since the USRP needs an input clock of 52MHz, but the Compal-phones only expose 13 and 26MHz, an external PLL would be required. The DP-L10 however exposes the MCLK/TSPACT11 pin of the Calypso, which is connected through the triple-buffer to the GSM900 TX/Vc3 input of the antenna switch, and thus easily accessible. When the corresponding bit in the MCU_SW_TRACE register is set, this pin outputs the 52MHz clock being fed to the ARM-core, which is phase-locked to the VCTCXO. See the blue circuit path in the picture above. |
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| 61 | |||
| 62 | This is the output captured with a 100MHz scope (and thus limited):[[BR]][[BR]] |
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| 63 | [[Image(mclk_buffered.png)]] |
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| 64 | |||
| 65 | After synchronizing to a cell with the phone, the frequency error measured by the DSP is in the 0-10Hz range. |
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| 66 | |||
| 67 | 3 | steve-m | === USB/Serial converter === |
| 68 | |||
| 69 | A nice feature of this phone is that it already has an integrated Silabs CP210x USB-UART, which is supported by Linux. Even faster, odd baudrates of the Calypso DBB are supported by this chip, including the maximum 812.500 baud. |
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| 70 | 11 | steve-m | Most of the phones seem to use USB vid:pid 0489:e003, which is mainline since Linux 2.6.36 (~~thus, older kernels need to be patched, the cp210x driver doesn't seem to take the vid/pid via modprobe parameters~~). |
| 71 | 1 | steve-m | |
| 72 | 11 | steve-m | As someone pointed out on the mailing list, you can do the following for Kernels < 2.6.36: |
| 73 | |||
| 74 | {{{ |
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| 75 | # modprobe -v cp210x |
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| 76 | # echo "0489 e003" > /sys/bus/usb-serial/drivers/cp210x/new_id |
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| 77 | }}} |
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| 78 | |||
| 79 | 3 | steve-m | The DP-L10 has the CalypsoRomloader enabled. |
| 80 | 4 | steve-m | |
| 81 | 8 | steve-m | === JTAG === |
| 82 | |||
| 83 | All JTAG lines, as well as the second uart (UART_MODEM), go to the unpopulated connector next to the display connector. |
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| 84 | |||
| 85 | 10 | steve-m | [[Image(dpl10_debug_conn.jpg)]] |
| 86 | ||pin||signal|| |
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| 87 | ||1||Vcc|| |
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| 88 | ||2||RX_MODEM|| |
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| 89 | ||3||TESTRSTz (Iota)|| |
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| 90 | ||4||TDI|| |
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| 91 | ||5||TMS|| |
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| 92 | ||6||TCK|| |
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| 93 | ||7||TX_MODEM|| |
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| 94 | ||8||TDO|| |
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| 95 | ||9||-nc-|| |
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| 96 | ||10||GND|| |
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| 97 | 4 | steve-m | ||11||-nc-|| |
| 98 | ||12||-nc-|| |
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| 99 | 1 | steve-m | |
| 100 | == State of support == |
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| 101 | 4 | steve-m | |
| 102 | 12 | steve-m | The code which adds support for the Pirelli DP-L10 can be found in master, however, there's still one thing that hasn't been resolved: The DP-L10 uses the UART_IRDA for sercomm, while the Compal phones use UART_MODEM. Therefore you need to swap the values of CONS_UART_NR and SERCOMM_UART_NR in /firmware/include/console.h and /firmware/include/comm/sercomm.h. |
| 103 | 4 | steve-m | |
| 104 | 11 | steve-m | Lots of drivers are still missing, like for the display, correct keypad layout etc. Maybe someone even wants to play with Wifi ;) |
| 105 | 4 | steve-m | |
| 106 | What works: |
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| 107 | * RX/TX in GSM900 and DCS1800 (PCS1900 should work as well, at least regarding the rffe config) |
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| 108 | * audio path |
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| 109 | * SIM-reader |
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| 110 | * keypad backlight |
