TECHNICAL DESCRIPTION
Issue 1 Section 4 PMCD030901C8
Revision 0 – 16 – Service Manual
4.4.6. Infrared Transceiver
The Infrared transceiver is a 115 kbits/s IrDA transceiver with a transmission range of approximately 20 cm. The transceiver is
connected directly to CALYPSO+ via RX, TX and shutdown (SD) data lines.
4.5. CALYPSO+
4.5.1 Introduction
CALYPSO+ contains the DSP, CPU, GSM timing and peripheral functions. The software for DSP is contained in masked
ROM.
4.5.2. Subscriber Identity Module (SIM)
The SIM interface is designed to support 3 V SIMs.
4.5.3 TPU
The 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 the
CPU 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 is
accessible 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 Configuration
TSPACT 0 V10 PAON External
TSPACT 1 V11 PLLON RF
TSPACT 2 V12 N/C
TSPACT 3 R12 TX_ON1 RF
TSPACT 4 P12 N/C
TSPACT 5 W13 N/C
TSPACT 6 AA13 DCS_PAON RF
TSPACT 7 V13 GSM_PAON RF
TSPACT 8 V14 N/C
TSPACT 9 R13 N/C
TSPACT 10 P13 N/C
TSPACT 11 W15 N/C
Timing serial port assignments of CALYPSO+
Name Ball No. Function Connection Configuration
TSPEN 0 V15 nTSPEN SYREN
TSPEN 1 Y17 N/C
TSPEN 2 AA17 PLL_STRB RF
TSPEN 3 V16 N/C N/A
TSPEN 4 W17 N/C
TSPCLKX V14 PLL_CLK RF
TSPDI Y16 N/C
TSPDO W16 PLL_SD/TDR RF
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