Nibble utilization for 1x16 interface in the flipped configuration is shown in the following figure. DQ indicates data nibbles, AC indicates Address/Command/Control nibbles, sys_clk indicates a nibble comprising the System Clock pair, RESET_n, and ALERT_n signals.
Figure 1. Connections for a 1x16 LPDDR4/4x Interface
Important: The nibble utilization figure is based on the fixed pinout output by Vivado for this configuration.
Figure 2. Nibble Utilization for 1x16 Component Interface (Flipped)