Panasonic EB-X70 Service Manual

Also see for EBX70 - CELL PHONE: Operating instructions Operating instructions Technical information Service manual

TECHNICAL DESCRIPTIONIssue 1 Section 4 PMCD030901C8Revision 0 – 16 – Service Manual4.4.6. Infrared TransceiverThe Infrared transceiver is a 115 kbits/s IrDA transceiver with a transmission range of approximately 20 cm. The transceiver isconnected directly to CALYPSO+ via RX, TX and shutdown (SD) data lines.4.5. CALYPSO+4.5.1 IntroductionCALYPSO+ contains the DSP, CPU, GSM timing and peripheral functions. The software for DSP is contained in maskedROM.4.5.2. Subscriber Identity Module (SIM)The SIM interface is designed to support 3 V SIMs.4.5.3 TPUThe TPU provides the GSM TPU TDMA timing requirements for the system.The TPU parallel outputs are as follows:The timed serial port is used to control the SYREN device and the PLL of the RF section. It can be controlled either by theCPU or by the TPU. The serial ports are as follows:The MCU controls the TPU through a double-page memory buffer, the TPU Communication buffer. Only one page isaccessible by the MCU at any time. Page selection is handled by TPU. The size of each page is 256 x 16.TPU Timing output signal assignments of CALYPSO+Name Ball No. Function Connection ConfigurationTSPACT 0 V10 PAON ExternalTSPACT 1 V11 PLLON RFTSPACT 2 V12 N/CTSPACT 3 R12 TX_ON1 RFTSPACT 4 P12 N/CTSPACT 5 W13 N/CTSPACT 6 AA13 DCS_PAON RFTSPACT 7 V13 GSM_PAON RFTSPACT 8 V14 N/CTSPACT 9 R13 N/CTSPACT 10 P13 N/CTSPACT 11 W15 N/CTiming serial port assignments of CALYPSO+Name Ball No. Function Connection ConfigurationTSPEN 0 V15 nTSPEN SYRENTSPEN 1 Y17 N/CTSPEN 2 AA17 PLL_STRB RFTSPEN 3 V16 N/C N/ATSPEN 4 W17 N/CTSPCLKX V14 PLL_CLK RFTSPDI Y16 N/CTSPDO W16 PLL_SD/TDR RF