MotorolaC155 » History » Version 6
laforge, 02/19/2016 10:48 PM
add testpad pic
1 | 5 | laforge | [[PageOutline]] |
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2 | 1 | laforge | = Motorola C155 = |
3 | |||
4 | The C155 seems to be one of many ODM phones that Motorola bought from Compal communications in Taiwan. It is of the same family as the C118, C123, etc. |
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5 | |||
6 | 2 | laforge | The internal name of the hardware is E99. |
7 | |||
8 | 1 | laforge | == Specifications == |
9 | * GSM 900 / GSM 1800 dual-band |
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10 | * 101x45x21 mm, 86 grams |
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11 | * GPRS |
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12 | * 920mAh Li-Ion battery |
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13 | * Ti Calypso/Iota/Rita chipset |
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14 | |||
15 | == Hardware == |
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16 | |||
17 | === GSM Chipset === |
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18 | |||
19 | * DBB: Ti Calypso Baseband, D751749GHH model (Calypso Lite G2), includes 256kBytes of internal SRAM |
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20 | * ABB: Ti TWL3014C |
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21 | * RF: TRF6151C |
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22 | * RF PA: SKY77324-12 |
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23 | |||
24 | === NOR Flash + SRAM === |
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25 | * Intel RD38F2030W0ZBQ1 |
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26 | * 64MBit NOR (8 MByte), bottom boot |
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27 | * 16Mbit SRAM (2 MByte) |
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28 | * Data sheet is in our git repository |
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29 | |||
30 | === Display === |
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31 | |||
32 | The display is a 96x64 pixels CSTN color LCD, attached via SPI bus to the Calypso DBB chip. |
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33 | |||
34 | The LCD controller inside the display is a Ultrachip UC1682, for which the data sheet is available at [http://www.datasheet4u.com/html/U/C/1/UC1682_UltraChip.pdf.html]. |
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35 | We need a proper C language driver for it (any volunteers?) |
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36 | |||
37 | 3 | laforge | === Audio Ringtone Chip === |
38 | |||
39 | It uses a Sunplus SPMA100B chip. Datasheet unknown. |
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40 | |||
41 | 1 | laforge | === Test Points === |
42 | |||
43 | ==== Test points accessible from battery compartment ==== |
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44 | 6 | laforge | [[Image(MotorolaC123:compal_testpads.png)]] |
45 | 1 | laforge | |
46 | Left Row of pins (from left to right |
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47 | * TP108 -- GND |
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48 | * TP29 -- GND (used to be VADCID) |
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49 | * TP37 -- GND (used to be Rx IRDA) |
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50 | * TP27 -- DLPWR (download power on), connects to Iota:RPWON |
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51 | * TP36 -- GND (used to be Tx IRDA) |
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52 | * TP10 -- DTR Modem |
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53 | |||
54 | Right row of pins (from left to right) |
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55 | * TP8 -- TDI JTAG |
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56 | * TP11 -- DSR Modem |
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57 | * TP9 -- CTS Modem |
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58 | * TP18 -- TMS JTAG |
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59 | * TP13 -- TxD Modem |
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60 | * TP16 -- TDO JTAG |
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61 | * TP21 -- RTS Modem |
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62 | * TP17 -- TCK JTAG |
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63 | * TP14 -- RxD Modem |
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64 | * TP3 -- DLPWR |
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65 | |||
66 | 4 | laforge | === PCB photographs === |
67 | |||
68 | Available from [http://laforge.gnumonks.org/photoalbum/devices/motorola_compal/c155] |
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69 | |||
70 | 1 | laforge | == Misc Notes == |
71 | |||
72 | === Bootloader === |
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73 | |||
74 | 6 | laforge | The RAM loader of the C155 assumes that the payload is a THUMB binary. [wiki:osmocon] thus always prefixes the payload with 32bit of |
75 | 1 | laforge | object code to switch back to ARM mode before jumping to the start routine. |