Nibble utilization for 72-bit interface using x8, x16, x8 DDP 2 rank,
or 3DS components with 1CK pair in the non-flipped configuration is shown in the
following figure. DQ indicates a data nibble, AC indicates an
Address/Command/Control nibble, sys_clk
indicates a nibble comprising the System Clock pair, RESET_n, and ALERT_n signals.
For a reduced data width of 64-bits, nibbles 4 and 5 in addition to nibbles 6, 7,
and 8 in the third Bank would be free.
Nibble utilization for 72-bit interface using x8, x16, x8 DDP 2 rank,
or 3DS components with 2CK pairs in the non-flipped configuration is shown in the
following figure. DQ indicates a data nibble, AC indicates an
Address/Command/Control nibble, sys_clk
indicates a nibble comprising the System Clock pair, RESET_n, and ALERT_n signals.
For a reduced data width of 64-bits, nibbles 6, and 7 in addition to nibble 8 in the
third Bank and nibble 2 in the first Bank would be free.
Nibble utilization for 40-bit interface using x4 DDP (2 Ranks) or 3DS components with 2CK pairs in the non-flipped configuration is shown in the following figure. DQ indicates a data nibble, AC indicates an Address/Command/Control nibble, sys_clk indicates a nibble comprising the System Clock pair, RESET_n, and ALERT_n signals.