I/O Banks

Efinix FPGAs have input/output (I/O) banks for general-purpose usage. Each I/O bank has independent power pins. The number and voltages supported vary by FPGA and package.

Some I/O banks are merged at the package level by sharing VCCIO pins, these are called merged banks. Merged banks have underscores (_) between banks in the VCCIO name (e.g., 1B_1C means VCCIO for bank 1B and 1C are connected). Some of the banks in a merged bank may not have available user I/Os in the package. The following table lists banks that have available user I/Os in a package.

Table 1. I/O Banks by Package

Package	GPIO Type	I/O Banks	Voltage (V)	Dynamic Voltage Support	DDIO Support	Merged Banks
N484	HSIO	2B, 2C, 2D, 2E, 4B, 4C, 4D	1.2, 1.35, 1.5, 1.8	–	All	2A_2B_2C, 4A_4B
	HVIO	BR0, BR3, TR1	1.8. 2.5, 3.0, 3.3	Yes	All	BR3_BR4
C529	HSIO	2A, 2B, 2C, 2D, 2E, 4B, 4C, 4D	1.2, 1.35, 1.5, 1.8	–	All	4A_4B
	HVIO	BL2, BL3, BR0, BR3, TL1, TL5, TR0, TR1, TR2	1.8. 2.5, 3.0, 3.3	Yes	All	BR3_BR4, TL1_TL5 BL2_BL3
N900	HSIO	2A, 2B, 2C, 2E, 4A, 4B, 4C, 4D	1.2, 1.35, 1.5, 1.8	–	All	–
	HVIO	BL2, BL3, BR0, BR3, BR4, TL0, TR1	1.8. 2.5, 3.0, 3.3	Yes	All	TL1_TL5