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DigiRadio/Hardware/DATASHEET/README.md
T
micheleandCursor 0a1188ad66 Release fw 0.8.5: BT1035 I2S boot init and hardware doc alignment.
Switch BT1035 bring-up from Line-In to I2S slave (AT+AUXCFG=3, AT+I2SCFG=67) to match the ADAU1701 PCM routing, confirm 2 kΩ I2C pull-ups on R1/R16, and sync firmware docs, AGENTS rules, and the DATASHEET bundle.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-07-08 14:41:31 +02:00

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Component datasheets (DigiRadio hardware)

Authoritative vendor PDFs used for schematic/PCB design review and firmware bring-up. Paths are relative to this repository root (DigiRadio/).

File Component Use in DigiRadio
SI4684-A10.pdf Silicon Labs Si4684-A10 RSTB power sequencing, SPI framing, supply levels, SMODE
adau1701.pdf Analog Devices ADAU1701 I²C pull-ups (2 kΩ R1/R16 on PCB; datasheet 2.2 kΩ), MCLK = 256×fS, serial-port master/slave loopback (MP10→MP4, MP11→MP5)
AN851.pdf Silicon Labs AN851 Si4684 bypass capacitors, antenna layout, schematic guidance
FSC-BT1035_Datasheet_EN.pdf Feasycom FSC-BT1035 Module pinout, electrical and mechanical specs (v1.0)
FSC-BT1035_programming_user_guide_1.1.1.pdf Feasycom FSC-BT1035 AT command reference — firmware core::Bt1035At* maps to §5/§6

Firmware cross-reference

Manual section Primary datasheet
ch-hardware.tex §validation SI4684-A10.pdf, AN851.pdf, adau1701.pdf, BT1035 datasheets
ch-bt1035.tex §AT commands FSC-BT1035_programming_user_guide_1.1.1.pdf §5

When extending BT1035 commands, cite the programming guide section in code comments and add a host test in Software/components/core/test/bt1035_at_test.cpp.