You can also configure the integrated DDRMC as two independent DDR interfaces of 16, or 32 data bits each. This section describes the Flipped 2x16 LPDDR4/4X interface.
Figure 1. Connections for a 2x16 LPDDR4/4x Interface
The following figure shows the nibble utilization for a 2x16 interface using
a x32 component in the flipped configuration. DQ indicates data nibbles. AC
indicates Address/Command/Control nibbles. sys_clk indicates a nibble comprising the Reference Clock pair,
RESET_n, and ALERT_n signals. For a 1x16 interface nibbles 4, 5, 6, 7, and 8 in the
second Bank and nibbles 2, 3, 6, and 7 in the third Bank are free.
Important: The
nibble utilization figure is based on the fixed pinout output by Vivado for this configuration.
Figure 2. Nibble Utilization for 2x16 Component Interface (Flipped)
