Board Design Guidelines for SmartFusion2 SoC and IGLOO2 FPGAs
AC393 Application Note Revision 14.0 16
Table 7 • Recommendation for Bank Supplies for FG484 Package
1
Bank Supply
Names
FG484
M2S090T/
M2GL090T
M2S060T
M2GL060T
M2S050T/
M2GL050T
M2S025T/
M2GL025T
M2S010T/
M2GL010T
M2S005/
M2GL005
VDDI0 – – Connect to VSS through a 10 k
Ω resistor
VDDI1 Connect to VSS through a 10 kΩ
resistor
Must connect
to VDDI1
Must connect
to VDDI1
Must connect
to VDDI1
Must connect
to VDDI1
VDDI2 Must connect
to VDDI2
Must connect
to VDDI2
– Must connect
to VDDI2
Must connect
to VDDI2
Must connect
to VDDI2
VDDI3 Must connect
to VDDI3
– Must connect
to VDDI3
Connect to VSS
through a 10 k
Ω
resistor
Must connect
to VDDI3
Connect to VSS
through a 10 k
Ω
resistor
VDDI4 Connect to VSS
through a 10 k
Ω
resistor
Must connect
to VDDI4
Connect to VSS
through a 10 k
Ω
resistor
Must connect
to VDDI4
Connect to VSS
through a 10 k
Ω
resistor
Must connect
to VDDI4
VDDI5 Connect to VSS through a 10 k
Ω resistor
VDDI6 Connect to VSS through a 10 kΩ resistor
VDDI7 Connect to VSS through a 10 kΩ resistor –
VDDI8 Connect to VSS through a 10 kΩ resistor – – –
VDDI9 – Connect to VSS
through a 10 k
Ω
resistor
––––
1. The unused VDDI# pins must be connected to VSS through a 10 KΩ resistor. The VDDI# pins can be grouped and connected to
one 10 KΩ resistor or a 10 K Ω resistor can be used for each VDDI# bank, it completely depends on the board layout. For the
previous design the unused VDDI# pins were DNC, and cannot create functionality issue. Microsemi recommends connecting to
Ground to improve the board reliability.
Table 8 • Recommendation for Bank Supplies for VF400 and FCS325 Packages
1
Bank
Supply
Names
VF400 FCS325
M2S060T/
M2GL060T
M2S050T/M
2GL050T
M2S025T/
M2GL025T
M2S010T/
M2GL010T
M2S005/
M2GL005
M2S090T/
M2GL090T
M2S060T/
M2GL060T
M2S050T/M
2GL050T
M2S025T/
M2GL025T
VDDI0 – Connect to VSS through a 10 k
Ω resistor – – Connect to VSS through a
10 k
Ω resistor
VDDI1 Connect to
VSS
through a
10 k
Ω
resistor
Must
connect to
VDDI1
Must
connect to
VDDI1
Must
connect to
VDDI1
Must
connect to
VDDI1
Connect to VSS through a
10 k
Ω resistor
Must
connect to
VDDI1
Must
connect to
VDDI1
VDDI2 Must
connect to
VDDI2
–Must
connect to
VDDI2
Must
connect to
VDDI2
Must
connect to
VDDI2
Must
connect to
VDDI2
Must
connect to
VDDI2
Must
connect to
VDDI2
–
VDDI3 – Must
connect to
VDDI3
Connect to VSS through a 10 k
Ω
resistor
Must
connect to
VDDI3
Must
connect to
VDDI3
Must
connect to
VDDI3
Connect to
VSS
through a
10 k
Ω
resistor
VDDI4 Must
connect to
VDDI4
Connect to VSS through a 10 k
Ω
resistor
Must
connect to
VDDI4
Connect to
VSS
through a
10 k
Ω
resistor
Must
connect to
VDDI4
Connect to
VSS
through a
10 k
Ω
resistor
Must
connect to
VDDI4
VDDI5 Connect to VSS through a 10 k
Ω resistor
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