Rules for Combining I/O Standards in the Same Bank

See the Rules for Combining I/O Standards in the Same Bank section in the UltraScale Architecture SelectIO Resources User Guide (UG571) for details on how to combine different input, output, and bidirectional standards in the same bank. When using the device in LVAUX mode, all HP I/O banks must be set to an LVAUX I/O standard. The following table summarizes the V_CCO and V_REF requirements for each LVAUX I/O standard. AMD recommends to separate LVDS12_LVAUX and MIPI_DPHY_LVAUX I/O pins from memory interfaces.

Table 1. Rules for Combining I/O Standards in the Same Bank
I/O Standard	I/O Bank Availability	V_CCO (V) for HP I/O Banks			V_REF (V)
I/O Standard	I/O Bank Availability	Output	Input	Input with DIFF_TERM_ADV and DIFF_TERM Support	Input
LVCMOS12_LVAUX	HP	1.2	1.2	N/A	N/A
SSTL12_LVAUX	HP	1.2	1.2	N/A	0.6V
DIFF_SSTL12_LVAUX	HP	1.2	1.2	N/A	N/A
AIO12_LVAUX	HP	1.2	1.2	N/A	0.3V
DIFF_AIO12_LVAUX	HP	1.2	1.2	1.2	N/A
LVDS12_LVAUX	HP	1.2	1.2	1.2	N/A
MIPI_DPHY_LVAUX	HP	1.2	1.2	1.2	N/A
System monitor external analog inputs (I/O standard = ANALOG or ANALOG_SE) are not supported in LVAUX mode HP I/O banks. Instead, if HD I/O are available in the device, consider routing external analog inputs through an HD I/O.

The following table summaries the DRIVE and SLEW attribute options and bidirectional buffer availability for each LVAUX I/O standard.

Table 2. Attributes Options and Bidirectional Buffer Availability
I/O Standard	I/O Bank Type	Output Slew		Output Drive		Bidirectional Buffers	Termination Type
		HP I/O Banks		HP I/O Banks			Input	Output
		Allowed Values	Default	Allowed Values	Default		Input	Output
LVCMOS12_LVAUX	HP	SLOW MEDIUM FAST	SLOW	8	8	Yes	None	None
SSTL12_LVAUX	HP	SLOW MEDIUM FAST	SLOW	N/A	N/A	Yes	Split	Driver
DIFF_SSTL12_LVAUX	HP	SLOW MEDIUM FAST	SLOW	N/A	N/A	Yes	Split	Driver
LVDS12_LVAUX¹	HP	N/A	N/A	N/A	N/A	Yes	DIFF_TERM_100	None
DIFF_AIO12_LVAUX	HP	SLOW MEDIUM FAST	SLOW	N/A	N/A	Yes	Single	Driver
AIO12_LVAUX	HP	SLOW MEDIUM FAST	SLOW	N/A	N/A	Yes	Single	Driver
MIPI_DPHY_LVAUX	HP	N/A	N/A	N/A	N/A	No	DIFF_TERM_100	Driver
The bidirectional configuration on these I/O standards is a fixed impedance structure optimized to 100Ω differential. They are intended to only be used in point-to-point transmissions that do not have turn-around timing requirements. System monitor external analog inputs (I/O standard = ANALOG or ANALOG_SE) are not supported in LVAUX mode HP I/O banks. Instead, if HD I/O are available in the device, consider routing external analog inputs through an HD I/O.

Rules for Combining I/O Standards in the Same Bank - UG584

Using LVAUX Mode in XQ Ruggedized UltraScale+ Devices for Airborne Systems Design Guide (UG584)