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 Mercury+ 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 Mercury+
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
D-0000-456-001 32 / 48 Version 02, 23.07.2020
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