3.1 SmartFusion 2 and IGLOO 2 SSO Guidelines

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The following tables list the MSIO, MSIOD, and DDRIO SSO guidelines and standards for different SmartFusion® 2 and IGLOO® 2 device variants. Unsupported combinations are left empty.

Important: SSO trace load for MSIO and MSIOD is 500Ω in parallel with 50 pF load. SSO trace load for DDRIO is 17 pF.

Table 3-3. MSIO SSO Guidelines for M2S010/M2GL010 - FG484 Device
LVTTL (SSOs Causing)			LVCMOS25 (SSOs Causing)			LVCMOS18 (SSOs Causing)			LVCMOS15 (SSOs Causing)			LVCMOS12 (SSOs Causing)
Drive Strength (mA)	GND Bounce	VDDI Bounce	Drive Strength (mA)	GND Bounce	VDDI Bounce	Drive Strength (mA)	GND Bounce	VDDI Bounce	Drive Strength (mA)	GND Bounce	VDDI Bounce	Drive Strength (mA)	GND Bounce	VDDI Bounce
20	28	18	16	28	20	12	28	28	8	28	28	4	28	28
16	28	22	12	28	28	10	28	28	6	28	28	2	28	28
12	28	28	8	28	28	8	28	28	4	28	28	—	—	—
8	28	28	6	28	28	6	28	28	2	28	28	—	—	—
4	28	28	4	28	28	4	28	28	—	—	—	—	—	—
2	28	28	2	28	28	2	28	28	—	—	—	—	—	—

Table 3-4. MSIOD SSO Guidelines for M2S010/M2GL010 - FG484 Device
LVCMOS25 (SSOs Causing)			LVCMOS18 (SSOs Causing)			LVCMOS15 (SSOs Causing)			LVCMOS12 (SSOs Causing)
Drive Strength (mA)	GND Bounce	VDDI Bounce	Drive Strength (mA)	GND Bounce	VDDI Bounce	Drive Strength (mA)	GND Bounce	VDDI Bounce	Drive Strength (mA)	GND Bounce	VDDI Bounce
12	28	18	10	28	28	6	28	28	4	28	28
8	28	24	8	28	28	4	28	28	2	28	28
6	28	28	6	28	28	2	28	28	—	—	—
4	28	28	4	28	28	—	—	—	—	—	—
2	28	28	2	28	28	—	—	—	—	—	—

Table 3-5. DDRIO SSO Guidelines for M2S010/M2GL010 - FG484 Device
LVCMOS25 (SSOs Causing)			LVCMOS18 (SSOs Causing)			LVCMOS15 (SSOs Causing)			LVCMOS12 (SSOs Causing)
Drive Strength (mA)	GND Bounce	VCCI Bounce	Drive Strength (mA)	GND Bounce	VCCI Bounce	Drive Strength (mA)	GND Bounce	VCCI Bounce	Drive Strength (mA)	GND Bounce	VCCI Bounce
16	28	28	16	28	28	12	28	28	8	28	28
12	28	28	12	28	28	10	28	28	4	28	28
8	28	28	10	28	28	8	28	28	2	28	28
6	28	28	8	28	28	6	28	28	—	—	—
4	28	28	6	28	28	4	28	28	—	—	—
2	28	28	4	28	28	2	28	28	—	—	—
			2	28	28	—	—	—	—	—	—

Table 3-6. MSIO, MSIOD, and DDRIO SSO Guidelines for M2S025/M2GL025 - FG484 Device
MSIO (SSOs Causing)				MSIOD (SSOs Causing)				DDRIO (SSOs Causing)
I/O Standards	I/O Drive Strength (mA)	GND Bounce	VDDI Bounce	I/O Standards	I/O Drive Strength (mA)	GND Bounce	VDDI Bounce	I/O Standards	I/O Drive Strength (mA)	GND Bounce	VDDI Bounce
LVTTL	20	28	12	—	—	—	—	—	—	—	—
LVCMOS25	16	28	14	LVCMOS25	12	28	18	LVCMOS25	16	18	28
LVCMOS18	12	28	28	LVCMOS18	10	28	28	LVCMOS18	16	28	28
LVCMOS15	8	28	28	LVCMOS15	6	28	28	LVCMOS15	12	28	28
LVCMOS12	4	28	28	LVCMOS12	4	28	28	LVCMOS12	8	28	28

Table 3-7. MSIO SSO Guidelines for M2S050/M2GL050 - FG896 Device
I/O Standards	LVTTL (SSOs Causing)		LVCMOS25 (SSOs Causing)			LVCMOS18 (SSOs Causing)			LVCMOS15 (SSOs Causing)			LVCMOS12 (SSOs Causing)
Drive Strength (mA)	GND Bounce	VDDI Bounce	Drive Strength (mA)	GND Bounce	VDDI Bounce	Drive Strength (mA)	GND Bounce	VDDI Bounce	Drive Strength (mA)	GND Bounce	VDDI Bounce	Drive Strength (mA)	GND Bounce	VDDI Bounce
20	40	6	16	28	8	12	60	10	8	60	14	4	60	60
16	60	10	12	60	10	10	60	12	6	60	20	2	60	60
12	60	12	8	60	14	8	60	16	4	60	60	—	—	—
8	60	20	6	60	20	6	60	22	2	60	60	—	—	—
4	60	60	4	60	60	4	60	60	—	—	—	—	—	—
2	60	60	2	60	60	2	60	60	—	—	—	—	—	—

Table 3-8. MSIOD SSO Guidelines for M2S050/M2GL050 - FG896 Device
	LVCMOS25 (SSOs Causing)		LVCMOS18 (SSOs Causing)			LVCMOS15 (SSOs Causing)			LVCMOS12 (SSOs Causing)
Drive Strength (mA)	GND Bounce	VDDI Bounce	Drive Strength (mA)	GND Bounce	VDDI Bounce	Drive Strength (mA)	GND Bounce	VDDI Bounce	Drive strength (mA)	GND Bounce	VDDI Bounce
12	60	14	10	60	28	6	60	60	4	60	60
8	60	20	8	60	60	4	60	60	2	60	60
6	60	60	6	60	60	2	60	60	—	—	—
4	60	60	4	60	60	—	—	—	—	—	—
2	60	60	2	60	60	—	—	—	—	—	—

Table 3-9. DDRIO SSO Guidelines for M2S050/M2GL050 - FG896 Device
	LVCMOS25 (SSOs Causing)		LVCMOS18 (SSOs Causing)			LVCMOS15 (SSOs Causing)			LVCMOS12 (SSOs Causing)
Drive Strength (mA)	GND Bounce	VCCI Bounce	Drive Strength (mA)	GND Bounce	VCCI Bounce	Drive Strength (mA)	GND Bounce	VCCI Bounce	Drive Strength (mA)	GND Bounce	VCCI Bounce
16	8	16	16	20	52	12	60	54	8	60	60
12	18	28	12	60	60	10	60	60	4	60	60
8	60	58	10	60	60	8	60	60	2	60	60
6	60	60	8	60	60	6	60	60	—	—	—
4	60	60	6	60	60	4	60	60	—	—	—
2	60	60	4	60	60	2	60	60	—	—	—
—	—	—	2	60	60	—	—	—	—	—	—

Table 3-10. MSIO, MSIOD, and DDRIO SSO Guidelines for M2S060/M2GL060 - FG676 Device
MSIO (SSOs Causing)				MSIOD (SSOs Causing)				DDRIO (SSOs Causing)
I/O Standards	I/O Drive Strength (mA)	GND Bounce	VDDI Bounce	I/O Standards	I/O Drive Strength (mA)	GND Bounce	VDDI Bounce	I/O Standards	I/O Drive Strength (mA)	GND Bounce	VDDI Bounce
LVTTL	20	32	28	—	—	—	—	—	—	—	—
LVCMOS25	16	32	32	LVCMOS25	12	32	16	LVCMOS25	16	14	32
LVCMOS18	12	32	32	LVCMOS18	10	32	30	LVCMOS18	16	28	32
LVCMOS15	8	32	32	LVCMOS15	6	32	32	LVCMOS15	12	32	32
LVCMOS12	4	32	32	LVCMOS12	4	32	32	LVCMOS12	8	32	32

Table 3-11. MSIO, MSIOD, and DDRIO SSO Guidelines for M2S090/M2GL090 - FG676 Device
MSIO (SSOs Causing)				MSIOD (SSOs Causing)				DDRIO (SSOs Causing)
I/O Standards	Drive Strength (mA)	GND Bounce	VDDI Bounce	I/O Standards	I/O Drive Strength (mA)	GND Bounce	VDDI Bounce	I/O Standards	I/O Drive Strength (mA)	GND Bounce	VDDI Bounce
LVTTL	20	40	26	—	—	—	—	—	—	—	—
LVCMOS25	16	40	40	LVCMOS25	12	40	22	LVCMOS25	16	40	40
LVCMOS18	12	40	40	LVCMOS18	10	40	40	LVCMOS18	16	40	40
LVCMOS15	8	40	40	LVCMOS15	6	40	40	LVCMOS15	12	40	40
LVCMOS12	4	40	40	LVCMOS12	4	40	40	LVCMOS12	8	40	40

Table 3-12. MSIO, MSIOD, and DDRIO SSO Guidelines for M2S090/M2GL090 - FCS325 Device
MSIO (SSOs Causing)				MSIOD (SSOs Causing)				DDRIO (SSOs Causing)
I/O Standards	Drive Strength (mA)	GND Bounce	VDDI Bounce	I/O Standards	Drive Strength (mA)	GND Bounce	VDDI Bounce	I/O Standards	Drive Strength (mA)	GND Bounce	VDDI Bounce
LVTTL	20	40	40	—	—	—	—	—	—	—	—
LVCMOS25	16	40	40	LVCMOS25	12	30	30	LVCMOS25	16	40	40
LVCMOS18	12	40	40	LVCMOS18	10	30	30	LVCMOS18	16	40	40
LVCMOS15	8	40	40	LVCMOS15	6	30	30	LVCMOS15	12	40	40
LVCMOS12	4	40	40	LVCMOS12	4	30	30	LVCMOS12	8	40	40

Table 3-13. MSIO, MSIOD, and DDRIO SSO Guidelines for M2S150/M2GL150 - FC1152 Device
MSIO (SSOs Causing)				MSIOD (SSOs Causing)				DDRIO (SSOs Causing)
I/O Standards	Drive Strength (mA)	GND Bounce	VDDI Bounce	I/O Standards	Drive Strength (mA)	GND Bounce	VDDI Bounce	I/O Standards	Drive Strength (mA)	GND Bounce	VDDI Bounce
LVTTL	20	60	60	—	—	—	—	—	—	—	—
LVCMOS25	16	60	60	LVCMOS25	12	60	60	LVCMOS25	16	60	60
LVCMOS18	12	60	60	LVCMOS18	10	60	60	LVCMOS18	16	60	60
LVCMOS15	8	60	60	LVCMOS15	6	60	60	LVCMOS15	12	60	60
LVCMOS12	4	60	60	LVCMOS12	4	60	60	LVCMOS12	8	60	60