Download Direct Sequence Spread Spectrum (DSSS) Receiver
Transcript
DSTO-GD-0525 3.44 ddc_rst Name : Digital Downconverter (DDC) reset. Desc : The DSSS FW implements a DDC stage at the front end. This register enables or disables (bypasses) the DDC. 0x2C Address : 0x0000 Nominal Value : Bit Map B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0 X X X X X X X X X Rst X X X X X X X → Don’t care. Rst ↔ DDC reset (ACTIVE HIGH). When asserted, the DDC DDS phase accumulator is held at zero, and the DDC stage is effectively bypassed (sampled data passed without downconversion). When deasserted, a downconversion at the programmed frequency shift is applied to sampled data. 42