MotorolaC155 » History » Version 1
laforge, 02/19/2016 10:48 PM
add page on C155
1 | 1 | laforge | = Motorola C155 = |
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2 | |||
3 | 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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4 | |||
5 | == Specifications == |
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6 | * GSM 900 / GSM 1800 dual-band |
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7 | * 101x45x21 mm, 86 grams |
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8 | * GPRS |
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9 | * 920mAh Li-Ion battery |
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10 | * Ti Calypso/Iota/Rita chipset |
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11 | |||
12 | == Hardware == |
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13 | |||
14 | === GSM Chipset === |
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15 | |||
16 | * DBB: Ti Calypso Baseband, D751749GHH model (Calypso Lite G2), includes 256kBytes of internal SRAM |
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17 | * ABB: Ti TWL3014C |
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18 | * RF: TRF6151C |
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19 | * RF PA: SKY77324-12 |
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20 | |||
21 | === NOR Flash + SRAM === |
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22 | * Intel RD38F2030W0ZBQ1 |
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23 | * 64MBit NOR (8 MByte), bottom boot |
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24 | * 16Mbit SRAM (2 MByte) |
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25 | * Data sheet is in our git repository |
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26 | |||
27 | === Display === |
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28 | |||
29 | The display is a 96x64 pixels CSTN color LCD, attached via SPI bus to the Calypso DBB chip. |
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30 | |||
31 | 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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32 | We need a proper C language driver for it (any volunteers?) |
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33 | |||
34 | === Test Points === |
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35 | |||
36 | ==== Test points accessible from battery compartment ==== |
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37 | |||
38 | Left Row of pins (from left to right |
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39 | * TP108 -- GND |
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40 | * TP29 -- GND (used to be VADCID) |
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41 | * TP37 -- GND (used to be Rx IRDA) |
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42 | * TP27 -- DLPWR (download power on), connects to Iota:RPWON |
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43 | * TP36 -- GND (used to be Tx IRDA) |
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44 | * TP10 -- DTR Modem |
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45 | |||
46 | Right row of pins (from left to right) |
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47 | * TP8 -- TDI JTAG |
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48 | * TP11 -- DSR Modem |
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49 | * TP9 -- CTS Modem |
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50 | * TP18 -- TMS JTAG |
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51 | * TP13 -- TxD Modem |
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52 | * TP16 -- TDO JTAG |
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53 | * TP21 -- RTS Modem |
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54 | * TP17 -- TCK JTAG |
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55 | * TP14 -- RxD Modem |
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56 | * TP3 -- DLPWR |
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57 | |||
58 | == Misc Notes == |
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59 | |||
60 | === Bootloader === |
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61 | |||
62 | The RAM loader of the C155 assumes that the payload is a THUMB binary. [wiki:compal_dnload] thus always prefixes the payload with 32bit of |
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63 | object code to switch back to ARM mode before jumping to the start routine. |