SC14405AFLAG

The SC14405AFLAG is designed as a CMOS chip optimized to handle all the audio, signal and data processing needed within a DECT handset. An ADPCM transcoder, a very low power CODEC and analog frontend is integrated. Direct connections towards microphone and a dynamical loudspeaker are provided. Duplex quality handsfree operation is integrated.

It has twenty-five features. (1)Integrated DECT baseband transceiver optimized for GAP handsets according to ETS 300 175-2, 175-3 & 175-8. (2)Two on board low drop voltage regulators with 2.85V and 3.0-3.8V (with external resistors the voltage can be determined) output. (3)2V upto 3.6V battery input with onboard step up converter. (4)3V upto 5.0V battery monitor input. (5)Advanced battery management unit. (6)Very low power in active and paging mode. (7)Embedded 16 bit compactRISC micro controller (CR16B) with programmable clock speeds. (8)4k byte memory mapped flash. (9)128k byte flash of factory programmed ROM flash. (10)125 segment LCD controller using 5 backplanes. (11)5.5kbyte on-chip data memory. (12)One full duplex ADPCM transcoder. (13)On-chip 14-bit linear CODEC. (14)14 upto 44dB gain differential microphone input buffer. (15)100ohms loudspeaker driver. (16)Software controlled gain on audio input and output. (17)Peak hold ADC for RSSI measurement. (18)Five general purpose inputs can be multiplexed on an 8bit ADC with selectable ranges. (19)On-chip dedicated TDMA instruction co-processor which supports 1.152MHz, 0.576MHz and 0.288MHz bit rates. (20)7 programmable control signals for radio front end. (21)Full and double slot, protected and unprotected B-fields. Duplex quality handsfree operation. (22)ACCESSBUS or MICROWIRE interfaces. (23)Tone generator. 3 parallel tones can be programmed. (24)Linear PCM interface for external codec. (25)Four general purpose ports. These as input/output, one as output only.

It is designed to fit to any radio design. A dedicated TDMA controller handles all physical layer slot formats and radio control. National semiconductors standard compactRISC CR16B 16 bit microcontroller takes care of all the higher protocol stack. 4 kbyte flash is integrated for parameter and number storage. And so on. If you have any question or suggestion or want to know more information please contact us for details. Thank you!