M1AFS250-FGG256I Actel Corporation, M1AFS250-FGG256I Datasheet - Page 54

• Manufacturer Part Number: M1AFS250-FGG256I
• Description: Actel Fusion Family Of Mixed Signal Fpgas
• Manufacturer: Actel Corporation

Device Architecture
2- 38
Table 2-17 • VRPSM Signal Descriptions
Signal Name
VRPU
VRINITSTATE
RTCPSMMATCH
PUB
TRST*
FPGAGOOD
PUCORE
VREN*
Note:
*Signals are hardwired internally and do not exist in the macro core.
Width Dir.
1
1
1
1
1
1
1
1
Out Indicator that the FPGA is powered and functional
Out Power-Up Core
Out Voltage Regulator Enable
In Voltage Regulator Power-Up
In Voltage Regulator Initial State
In RTC Power System Management Match
In External pin, built-in weak pull-up
In External pin, JTAG Test Reset
0 – Voltage regulator disabled. PUB must be floated or pulled up, and
the TRST pin must be grounded to disable the voltage regulator.
1 – Voltage regulator enabled
Defines the voltage Regulator status upon power-up of the 3.3 V. The
signal is configured by Actel Libero
(IDE) when the VRPSM macro is generated.
Tie off to 1 – Voltage regulator enables when 3.3 V is powered.
Tie off to 0 – Voltage regulator disables when 3.3 V is powered.
Connect from RTCPSMATCH signal from RTC in AB
0 transition to 1 turns on the voltage regulator
Power-Up Bar
0 – Enables voltage regulator at all times
1 – Enables voltage regulator at all times
No need to connect if it is not used.
1 – Indicates that the FPGA is powered up and functional.
0 – Not possible to read by FPGA since it has already powered off.
Inverted signal of PUB. No need to connect if it is not used.
Connected to 1.5 V voltage regulator in Fusion device internally.
0 – Voltage regulator disables
1 – Voltage regulator enables
R e visio n 1
Function
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Integrated Design Environment