6
Board Function
6.1
LEDs
LED Name
LED
Signal Name
Controlled by
Description
PWGD
D1602
PWR_GOOD
Power circuits
Indicates that PWR_GOOD is active and
VCC_IO_A, B, and C are available
DONE
D1601
FPGA_DONE
Mercury module
FPGA configuration is done
FTDI
D401
FTDI_LED
FTDI
Function controlled by the FTDI device
LED0
D1604
GPIO0_LED0#
Mercury module
User LED, shared with IO connector 2 (pin 2)
LED1
D1605
GPIO1_LED1#
Mercury module
User LED, shared with IO connector 2 (pin 4)
LED2
D1606
LED2
Mercury module
User LED
LED3
D1607
LED3
Mercury module
User LED
Table 22: Board LEDs
For details on the LED connections, refer to the ST1 Base Board User Schematics [4].
6.2
Buttons
All buttons are active-low; their function is described in Table 23.
The user buttons can be configured by the user to have various functions. For details, refer to the
ST1 Base Board User Schematics [4].
Button Name
Button
Signal Name
Function
Comments
POR
S1600
POR#_LOAD#
Power-on reset/
Refer to the Enclustra Module Pin
Configuration-clear
Connection Guidelines [8]
BTN0
S1602
BTN0#
User function
BTN1
S1603
BTN1#
User function
Optional: shared with VCXO control
voltage filter
Table 23: Board Buttons
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Version 02, 23.07.2020
