Panasonic EB-GD90 Technical Manual

Also see for EB-GD90: Operating instructions

Contents

http://cxema.ruBASEBAND OVERVIEWMCUK990801G8 Section 6 Issue ATechnical Guide – 27 – Revision 06.2.3 Time Processing Unit (TPU)The TPU provides the GSM TDMA timing requirements for the system, external timing signals are provided by an area ofMicrocode within the GEMINI chip.6.2.4 CPU MemoryGD90 uses a Dual Operation (DL) Flash memory, comprising a 16 bit Flash ROM and 8 bit SRAM. DL Flash memory is ableto access one block of memory while writing another block of memory.6.2.5 LCDThe LCD assembly is a sub-assembly comprising the LCD glass and driver chip on a flexible PCB with connection to theKeypad PCB via zebra strip connectors.A 96 x 58 pixel graphical display is used to give maximum information. It can also display Chinese characters and largenumbers. For example, 12 characters x 2 lines or 16 characters x 3 lines, both with two lines of icons.Figure 6.3: LCD DimensionsGEMINI Pin Description65 VEGA BENA66 VEGA BCAL67 VEGA BULON68 VEGA BDLON69 RF PA_ON70 RF PCNnGSM118 RF signal RXON1119 RF signal RXON258 VEGA_SEL59 RF PLL_STRB60 RF signal TXON61 N.C.62 RF IFAGCEN18.02 23.2 min0.0180.293View AreaEffective Area0.0180.24510068-125.2329.4 minDimensions are in millimetres (mm)