name: HT9015 function: RF Single Chip for Cordless Phone package: SSOP48,48 manufacturer: Holtek +--()--+ VCO2 | 1 48| VCO1 C_RECT | 2 47| VCO_CONT RX_OUT | 3 46| VCC2 TX_OUT | 4 45| 1STMIN GND2 | 5 44| VREF TX_IN | 6 43| 1STMINOUT VCC3 | 7 42| E_RECT LO1 | 8 41| 2NDMININ LO2 | 9 40| N_REC SIG_OUT |10 39| 2NDMIXOUT CLK |11 38| VCC1 DATA |12 37| IF_IN STB |13 36| DEC FIL_OUT |14 35| GND1 FIL_IN |15 34| IF_OUT COMP_OUT |16 33| QUAD C_NF |17 32| AF_OUT MIC_OUT |18 31| N_FIL_OUT MIC_IN |19 30| N_FIL_IN PRE_IN |20 29| D_COM_IN PRE_OUT |21 28| D_COMP_OUT EXP_OUT |22 27| RSSI RECE_IN |23 26| BAT_ALM RO1 |24 25| RO2 +------+ This pinout came from the Chipdir: http://www.chipdir.org/