Battery Identification

Chicago Batteries

Different battery types are identified by a pulldown resistor inside the battery pack. The BSI line inside transceiver has a 100k pullup to VBB. The MCU can identify the battery by reading the BSI line DC-voltage level with a CCONT (N100) A D-converter. The battery identification line is used also for battery removal detection. The BSI line is connected to a SIMCardDetX line of MAD2 (D200). SIMCardDetX is a threshold detector with a nominal input switching level 0.85xVcc for a rising edge and...

Electrical Specifications

Dsp Programming For Synths For Beginners

935.2 959.8 MHz GSM 1805.2 1879.8 MHz DCS1800 890.2 914.8 MHz GSM 1710.2 1784.8 MHz DCS1800 5 33 dBm 3.2 mW 2 W GSM 0 30 dBm 1 mW 1 W DCS1800 -102 dBm BER lt 2.439 GSM -100 dBm BER lt 2.439 DCS1800 ROW 5 G , Col 4 G , LCDCS, ROLLER A, ROLLER B, ROLLER C VREF VSYN_2 RXC SCLK SDATA SENA 1 TXC TX IN TX IP TXQN TXQP VCP TXP VRX_2 VTX sgnd xear mbus fbus-rx fbus-tx i__gnd fbus-tx fbus-rx mbus xear sgnd xmic _i_gnd- XMIC SGND XEAR MBUS1 FBUS-RX FBUS-TX VRX-1 VRX-2 VSYN-2 VXO VTX VCP VREF VBATT HF...