PCA5097

General
· The PCx509x is designed for GAP-compliant handsets and simple base stations
· Embedded 80C51 microcontroller with twice the performance of the classic architecture, up to 128 kbytes external memory or 64 kbytes FEEPROM program memory and 3 kbytes of data memory on chip. In addition there is 1 kbyte of on-chip data memory that is shared with on-chip Burst Mode Logic (BML) and DSP, the System Data RAM (SDR).
· 80C51 ports P0, P1, P2 and P3 available for interfacing to display, keyboard, I2C-bus, interrupt sources and/or external memory. External program memory is addressable up to 128 kbytes (PCD5090/xxx and PCA5097/xxx).
· Portable Part (PP) and Fixed Part (FP) modes
· TDMA frame (de)multiplexing; transmission or reception can be programmed for any slot
· Ciphering, scrambling, CRC checking/generation, protected B-fields
· Speech and data buffering space for six handsets
· Local call and B-field loop-back
· Two interrupt lines for BML and DSP to interrupt 80C51
· On-chip, three-channel time-multiplexed 8-bit Analog-to-Digital Converter (ADC) for RSSI measurement and battery voltage measurement. One channel available for other purposes.
· On-chip 8-bit DAC for frequency adjustment of 13.824 MHz on-chip crystal oscillator
· Phase error measurement and phase error correction by hardware
· Digital-to-Analog Converters (DACs) and ADCs for dynamic earpiece and dynamic or electret microphone
· On-chip reference voltage
· On-chip supply for electret microphone
· Very low ohmic buzzer output
· Serial interface to external ADPCM CODEC (PCD5032)
· IOM-2interface (Siemens registered trademark)
· Serial interface to synthesizer for frequency programming
· Programmable timing of radio-control signals
· Programmable polarity of radio-control signals
· Easy interfacing with radio circuits, operating at other supply voltage
· Programmable GMSK pulse shaper
· On-chip comparator for use as bit-slicer
· Power-on reset
· Low supply voltage (2.7 to 5.5 V)
· SACMOS technology.
DSP software features
· ADPCM encoding and decoding complying with G.721
· Speech filters
· Programmable gain in speech paths
· Side tone and soft mute
· Ringer and tone (DTMF) generator
· Dial tone detection
· Echo cancellation
· Automatic gain control
· Telephone Answering Machine (TAM) switch
· Conference call (PCD5090/400)
· Hands-free operation (PCD5090/311). For each DSP software version a separate manual is available, in which detailed information is provided on how parameters must be set.