FPGA could now sample at 30kHz(Could go up to 40kHz) at 8MHz transmission
The angle is then send to Delfino at 12MHz
No bit error recorded
Delfino SPI Modes
Mode 0 CPOL = 0. CPHA = 0
Mode 0 CPOL = 0. CPHA = 1
Mode 0 CPOL = 1. CPHA = 0
Mode 0 CPOL = 1. CPHA = 1
CPHA = 0
CPHA = 1
Performance Data
Encoder Sensitivity to Cable Length
SPI sample at 0° for CPHA = 1, 180° for CPHA = 0
8MHz:±54.7°
4MHz:±27.4°
2MHz:±13.7°
1MHz:±6.8°
8MHz must use line delay compensation
RPM Measure Testing
Note: Each test happen in succession not parellel
From Delfino
From FPGA
RPM is verified using laser tachometer