Releases · FPGAwars/icezum

10 PCBs of the V1.1-RC1 icezum Alhambra board have been manufactured at PCBWay. 3 of them has been mounted by hand for testing purposes.

This version has been founded by our backers (100). Thanks a lot! :-)

Changes from V1.0:

TX/RX green leds added. Now there is a visual feedback when the FPGA is receiving or sending data through the serial port
CFG Programming led: A yellow led is turn on when the FPGA is being reconfigured
New pushbuttons: They have been changed by right angle pushbuttons. In addition, pull-down resistors have been added so there is no need to activate the internal FPGA pull-up resistors (It is now easier for the beginners to work with the buttons)
New reset circuit to get proper levels at pin "R" (Reset)
New test points scheme, accessible from top and bottom
Improved design in power control circuit avoids spurious switch-on on hot plug-in
Redesign of reverse polarity protection stage gets top performance on hot plug-in
Continuous short-circuit from 5V to GND is now allowed
Continuous short-circuit from 5V_P (peripherals supply) to GND is now allowed
Power-up ramp control on 5V_P (peripherals supply) allows to switch-on peripherals without resetting the board (up to 2200 uF capacitive load supported)
L4 ferrite reference modified for higher power capacity
Pin J5-8 was Pwr (Vin controlled by the power switch), now it is directly connected to Vin
LEDs colors modified: user LEDs now are green, power LED is blue

This version is stored in the v1.1-altium branch

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