3. RapidIO Lanes > Port and Lane Initialization Sequence
CPS-1848 User Manual
78
June 2, 2014
Formal Status
This document is confidential and is subject to an NDA.
Integrated Device Technology
As the NEG1_TAP setting is increased the step size of the previous bits to the last bit increases. The following graph shows the
change in the step size as the register (DAC) value is increased. The dB value is calculated as: 20log (previous bits amplitude
/ last bit amplitude).
The following figure shows the effects on the waveform for the POS1_TAP settings of zero (top), 30 (middle) and 63 (bottom).
The NEG1_TAP is set to 0 and the TX_AMP_CTL value is set to 52 (default).