SPRUJ55D September 2023 – July 2025 AM263P2 , AM263P2-Q1 , AM263P4 , AM263P4-Q1
This Offset Correction block shown in Figure 7-152 calculates and eliminates the DC offset. It runs independently on Sine and Cosine channels. The offset correction can be enabled anytime and the external resolver shaft need not be spinning. DC average of incoming sine (or cosine) signals are averaged independently (through programmable time constants) and corrected. There is a programmable hysteresis to avoid noise affecting the data.
The registers associated with Offset Correction are REGS_DC_OFF_CFG1_x, REGS_DC_OFF_CFG2_x and REGS_DC_OFFx.
Figure 7-152 DC Offset Correction Block Diagram