Product Brief February 2001 Lucent CSP1093C GSM 2+ Conversion Signal Processor for Cellular Handset and Modem Applications Features Supports the previous features of GSM phase 2+ and multislotting (GPRS). All multislotting classes (1 to 18) are supported (including type 1 and type 2 MS). Supports both heterodyne and direct conversion RF transceivers and provides hardware dc offset correction. Seamless interface to the DSP16000 family of processors and a variety of RF chips (transceiver and frequency synthesizer). Complete ADC (analog-to-digital conversion) and DAC (digital-to-analog conversion) functions for baseband and voice band, including DAI (digital audio interface). Integrated event timing and control state machine that monitors the internal quarter-bit counter and internal frame counter until a programmed time is reached, and then executes the control portion of the register and may issue an interrupt to the DSP. GMSK modulator that accepts 88 bits, 148 bits, or several slots (multislot) of burst data from an internal register and modulates the data into GSM standards. Phase information is converted into I and Q output voltages that can be connected directly to an RF transceiver or RF modulator. Power ramping control with the capability of dipping and/or changing power levels between consecutive bursts. Received baseband I and Q signals are ADC converted at two user selectable rates (270 Ksamples/s and 540 Ksamples/s) and the samples are then stored in a double buffer that holds 32 I and 32 Q samples before issuing an interrupt to the DSP to read the sample information. Twelve output control lines that can be used to control external circuits for such functions as power on/off or digital gain control. Serial port that can be used to program external RF chips such as transceivers and frequency synthesizers. Hardware support for A5.1 and A5.2 ciphering. Interrupt handling capabilities for voice band samples, received baseband data, A5 ciphering, timing and control, and end of transmission notification. Low-power sleep mode and wake-up. Capability of switching to slow clock during sleep mode. Innovative offset cancellation scheme for both Tx and Rx to support continuous Tx and Rx. Voice band input connects directly to electrect microphone and output connects directly to speaker. IEEE * 1149.1 JTAG controller and boundary-scan register. 32 kHz slow clock on-chip oscillator (direct connection to a 32 kHz crystal or external oscillator). Description The Lucent CSP1093C integrates the timing and control functions for GSM phase 2+ mobile application with the ADC and DAC functions. The CSP1093C interfaces to an external controlling device, typically a DSP or a microcontroller, via a 16-bit parallel interface. It serves as the interface that connects a DSP to the RF circuitry in a GSM phase 2+ mobile telephone. All multislotting classes of GSM phase 2+ are fully supported by the Lucent CSP1093C. For example, when transmitting data, a DSP can load 148 bits of burst data into the Lucent CSP1093C's internal register, and program the Lucent CSP1093C's event timing and control register with the exact time to send the burst. When the timing portion of the event timing and control register matches the internal quarter-bit counter and internal frame counter, the 148 bits in the internal register are GMSK modulated according to GSM phase 2+ standards. The resulting phase information is translated into I and Q differential output voltages that can be connected directly to an RF modulator. The DSP is notified when the transmission is completed. For receiving baseband data, a DSP can program the Lucent CSP1093C's event timing and control register with the exact time to start receiving I and Q samples. When that time is reached, the control portion of the event timing and control register will start the baseband receive section converting I and Q sample pairs. The samples are stored in a double-buffered register until the register contains 32 sample pairs. The Lucent CSP1093C then notifies the DSP, which has ample time to read the information out before the next 32 sample pairs are stored. The voice band ADC converter issues an interrupt to the DSP whenever it finishes converting a 16-bit PCM word. The DSP then reads the new input sample and simultaneously loads the voice band output DAC converter with a new PCM output word. The voice band output can be connected directly to a speaker. * IEEE is a registered trademark of The Institute of Electrical and Electronics Engineers, Inc. Lucent Technologies - Proprietary Use pursuant to Company instructions Lucent CSP1093C GSM 2+ Conversion Signal Processor for Cellular Handset and Modem Applications Product Brief February 2001 Description (continued) The Lucent CSP1093C is designed to interface a digital signal processor with analog audio and baseband signals, programmable events, power timers, and filters. The device provides analog interfacing and timing for a GSM phase 2+ mobile cellular telecommunications terminal requiring low power consumption. Figure 1 contains a block diagram of the Lucent CSP1093C. AFC 12-bit DAC AFC REGISTER 3 JTAG TxP POWER RAMP 4 TRAMSMIT BUFFER 160 bits (x2) DIGITAL AUDIO INTERFACE A5 BUFFER MICIN 10-bit DAC 9-bit DAC AND PGA TxI 9-bit DAC AND PGA TxQ GSM STANDARD GMSK MODULATOR A5.1/A5.2 MUX 16-bit ADC 10-bit ADC PGA AAF RxI 10-bit ADC PGA AAF RxQ 64-word BUFFER (x2) AUXIN AOUTAP 16-bit DAC GAIN CONTROL XOENAQ AOUTAN TIMING AND CONTROL REGISTERS AOUTBP EXTERNAL CONTROL LINES XOENA 12 AOUTBN OCTL MASTER CLOCK RFOVL INTERFACE CINTR, DINTR 16 R/W DB[15:0] DATA I/O AB[8:0] ADDRESS CLOCK RATE SELECT 9 1/4-bit COUNTER FRAME COUNTER SERIAL OUTPUT 4 TO RF CHIPS XTALA SLEEP MODE LOGIC 32 kHz OSCILLATOR CIRCUITRY XTALB 5-9254 (F) Figure 1. Lucent CSP1093C Block Diagram For additional information, contact your Microelectronics Group Account Manager or the following: http://www.lucent.com/micro INTERNET: docmaster@micro.lucent.com E-MAIL: N. AMERICA: Microelectronics Group, Lucent Technologies Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18109-3286 1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106) ASIA PACIFIC: Microelectronics Group, Lucent Technologies Singapore Pte. Ltd., 77 Science Park Drive, #03-18 Cintech III, Singapore 118256 Tel. (65) 778 8833, FAX (65) 777 7495 CHINA: Microelectronics Group, Lucent Technologies (China) Co., Ltd., A-F2, 23/F, Zao Fong Universe Building, 1800 Zhong Shan Xi Road, Shanghai 200233 P. R. China Tel. (86) 21 6440 0468, ext. 325, FAX (86) 21 6440 0652 JAPAN: Microelectronics Group, Lucent Technologies Japan Ltd., 7-18, Higashi-Gotanda 2-chome, Shinagawa-ku, Tokyo 141, Japan Tel. (81) 3 5421 1600, FAX (81) 3 5421 1700 EUROPE: Data Requests: MICROELECTRONICS GROUP DATALINE: Tel. (44) 7000 582 368, FAX (44) 1189 328 148 Technical Inquiries:GERMANY: (49) 89 95086 0 (Munich), UNITED KINGDOM: (44) 1344 865 900 (Ascot), FRANCE: (33) 1 40 83 68 00 (Paris), SWEDEN: (46) 8 594 607 00 (Stockholm), FINLAND: (358) 9 3507670 (Helsinki), ITALY: (39) 02 6608131 (Milan), SPAIN: (34) 1 807 1441 (Madrid) Lucent Technologies Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. Copyright (c) 2001 Lucent Technologies Inc. All Rights Reserved February 2001 PB01-042WTEC