# # BB Audio ADC # ---------------- # # # Disco-Kraken Key In Net List # ------------------------------- # # # Initial Rev. 27-Nov-2022 # Current Rev. 5-Dec-2023 # # # This net list holds the BB Audio ADC and # its connections to the DK FPGA. # # # The components for the BB Audio ADC # are in the range 1101 to 1149. # # # BB Audio ADC Analog Input Signals & their AC Coupling Capacitors: # -------------------------------------------------------------------- # NET 'Interposer_1_Audio_DIR' C1111-2 # Interposer #1 Audio Signal DIR NET 'BB_Audio_ADC_Input_1_DIR' U1101-6 C1111-1 # BB Audio ADC Analog Input #1 DIR NET 'Interposer_1_Audio_CMP' C1112-2 # Interposer #1 Audio Signal CMP NET 'BB_Audio_ADC_Input_1_CMP' U1101-7 C1112-1 # BB Audio ADC Analog Input #1 CMP NET 'Interposer_2_Audio_DIR' C1113-2 # Interposer #2 Audio Signal DIR NET 'BB_Audio_ADC_Input_2_DIR' U1101-8 C1113-1 # BB Audio ADC Analog Input #2 DIR NET 'Interposer_2_Audio_CMP' C1114-2 # Interposer #2 Audio Signal CMP NET 'BB_Audio_ADC_Input_2_CMP' U1101-9 C1114-1 # BB Audio ADC Analog Input #2 CMP NET 'NO_CONN_Audio_ADC_Input_3_DIR' U1101-10 # No Connection Input 3 DIR pin 10 NET 'NO_CONN_Audio_ADC_Input_3_CMP' U1101-11 # No Connection Input 3 CMP pin 11 NET 'NO_CONN_Audio_ADC_Input_4_DIR' U1101-12 # No Connection Input 4 DIR pin 12 NET 'NO_CONN_Audio_ADC_Input_4_CMP' U1101-13 # No Connection Input 4 CMP pin 13 # # BB Audio ADC to/from DK FPGA Connections: # --------------------------------------------- # NET 'FPGA_BB_ADC_CLK_Out' R1101-1 # FPGA BB Audio ADC CLK to Term Resistor NET 'BB_Audio_ADC_CLK_GPIO1' U1101-20 R1101-2 # Term Resistor to BB ADC CLK GPIO1 Input NET 'BB_Audio_ADC_SDOUT' U1101-21 R1102-2 # BB ADC Serial Data to Term Resistor NET 'FPGA_BB_ADC_SDATA_IN' R1102-1 # Term Resistor to FPGA BB ADC SData Input NET 'BB_Audio_ADC_BCLK_Out' U1101-22 R1103-2 # BB ADC BCLK Output to Term Resistor NET 'FPGA_BB_ADC_BCLK_IN' R1103-1 # Term Resistor to FPGA BB ADC BCLK Input NET 'BB_Audio_ADC_FSYNC_Out' U1101-23 R1104-2 # BB ADC FSYNC Output to Term Resistor NET 'FPGA_BB_ADC_FSYNC_IN' R1104-1 # Term Resistor to FPGA BB ADC FSYNC Input # # BB Audio ADC RESET Signal: # ------------------------------ # NET 'BB_Audio_ADC_RESET_B' U1101-14 # BB Audio ADC RESET_B signal # # Internal PS and Bias Connections for the BB Audio ADC Chip: # -------------------------------------------------------------- # NET 'BB_AUDIO_ADC_AREG' U1101-2 C1105-1 C1106-2 # Bypass Analog Regulator NET 'GROUND' C1105-2 C1106-1 # Ground Side of Bypass Caps NET 'BB_AUDIO_ADC_VREF' U1101-3 C1107-1 # Bypass VREF pin NET 'GROUND' C1107-2 # Ground Side of Bypass Cap NET 'BB_AUDIO_ADC_MIC_BIAS' U1101-5 C1108-2 # Bypass MIC_BIAS pin NET 'GROUND' C1108-1 # Ground Side of Bypass Cap NET 'BB_AUDIO_ADC_DREG' U1101-24 C1109-1 C1110-2 # Bypass Digital Regulator NET 'GROUND' C1109-2 C1110-1 # Ground Side of Bypass Caps # # BB Audio ADC I2C BUS Connection: # ------------------------------------ # NET 'I2C_SCLK_SENSOR_BB_ADC' U1101-17 # I2C Bus SCLK Connection NET 'I2C_DATA_SENSOR_BB_ADC' U1101-18 # I2C Bus DATA Connection # # BB Audio ADC ADDRESS Pins: # ------------------------------ # NET 'GROUND' U1101-15 U1101-16 # Grounds to the ADDRESS pins # # List the NetNames of the Signals that must be # connected to FPGA Floating Pins. Here just list # the NetNames - the actual connections to these # FPGA Floating pins are made in the Nets File: # fpga_cpu_floating_connection_nets.txt # ---------------------------------------------------- # # # All of these are 1V8 signals: Clock to and Data from the Audio ADC # --------------------------------------------------------------------- # # # NET 'FPGA_BB_ADC_CLK_Out' # FPGA BB Audio ADC CLK to Term Resistor # # NET 'FPGA_BB_ADC_SDATA_IN' # Term Resistor to FPGA BB ADC SData Input # # NET 'FPGA_BB_ADC_BCLK_IN' # Term Resistor to FPGA BB ADC BCLK Input # # NET 'FPGA_BB_ADC_FSYNC_IN' # Term Resistor to FPGA BB ADC FSYNC Input # # # The Sensor I2C Bus connections to the FPGA (this I2C bus is also # used to setup this Audio ADC) are referenced in the Environmental # Sensors Nets File. # # # # 3.3 Volt Power and Grounds to BB Audio ADC Chip: # ---------------------------------------------------- # NET 'BULK_3V3' L1101-2 # Bulk_3V3 Power to Filter NET 'BB_AUDIO_ADC_3V3' L1101-1 # Filtered BB Audio ADC 3V3 Power NET 'BB_AUDIO_ADC_3V3' C1101-1 C1102-2 # 3V3 Bypass Caps NET 'GROUND' C1101-2 C1102-1 # Ground Side of Filter Caps NET 'BB_AUDIO_ADC_3V3' U1101-1 # 3V3 Power to the BB Audio ADC NET 'GROUND' U1101-4 # Ground to the AVSS ADC Pin NET 'GROUND' U1101-25 U1101-26 U1101-27 # Grounds to the Thermal Via Pins NET 'GROUND' U1101-28 U1101-29 U1101-30 # Grounds to the Thermal Via Pins NET 'GROUND' U1101-31 U1101-32 U1101-33 # Grounds to the Thermal Via Pins # # 1.8 Volt Power to BB Audio ADC Chip: # ---------------------------------------- # NET 'BULK_1V8' L1102-1 # Bulk_1V8 Power to Filter NET 'BB_AUDIO_ADC_1V8' L1102-2 # Filtered BB Audio ADC 1V8 Power NET 'BB_AUDIO_ADC_1V8' C1103-2 C1104-1 # 1V8 Bypass Caps NET 'GROUND' C1103-1 C1104-2 # Ground Side of Filter Caps NET 'BB_AUDIO_ADC_1V8' U1101-19 # 1V8 Power to the BB Audio ADC