Achronix Speedster22i Pin Connections and Power Sequencing - Manual (Page 8)

8 UG042, August 19, 2014
Miscellaneous
CORE_TESTIN1 DBG Output Debug interface used for testing the fabric Leave unconnected.
EDM DBG Output For factory use / test purposes Leave unconnected.
TEMP_DIODE_P/N TEMP Input Die temperature monitoring diode connections (P and N).
If temperature monitoring feature is not
used, leave unconnected. Otherwise
connect directly to a temperature sensor.
EFUSE_PROG EFUSE Output
HD1000's EFuse erase / program sequencer controls this
signal. This signal should not be touched by user.
Leave unconnected.
Power
PA_VDD1 N12P75G Power SerDes Analog Low Power Supply
0.95V analog power supply for the SerDes.
Connect these pins to a linear or low noise
switching power supply.
PA_VDD2 N12P75G Power SerDes Analog High Power Supply
Connect all 1.8V PA_VDD2 pins to a linear
or low noise switching power supply. Highly
sensitive SerDes analog power supply.
PA_VREG_CMN N12P75G Power SerDes Regulator Power Supply
0.95V power supply for the SerDes
regulator. Connect to PA_VDD1 through
ferrite bead.
PA_VREG_RX N12P75G Power SerDes Regulator Power Supply
0.95V power supply for the SerDes
regulator. Connect to PA_VDD1 through
ferrite bead.
PA_VREG_SYNTHX N12P75G Power SerDes Regulator Power Supply
0.95V power supply for the SerDes
regulator. Connect to PA_VDD1 through
ferrite bead.
PAD_TE_I_A_RXTERMV_LNUM[31:0] N12P75G Power Receiver Termination Voltage Pad input
Use a 1nF bypass cap and terminate to
GND.
PA_VDD1 S12P75G Power SerDes Analog Low Power Supply
0.95V analog power supply for the SerDes.
Connect these pins to a linear or low noise
switching power supply.
PA_VDD2 S12P75G Power SerDes Analog High Power Supply
Connect all 1.8V PA_VDD2 pins to a linear
or low noise switching power supply. Highly
sensitive SerDes analog power supply.
PA_VREG_CMN S12P75G Power SerDes Regulator Power Supply
0.95V power supply for the SerDes
regulator. Connect to PA_VDD1 through
ferrite bead.
PA_VREG_RX S12P75G Power SerDes Regulator Power Supply
0.95V power supply for the SerDes
regulator. Connect to PA_VDD1 through
ferrite bead.
PA_VREG_SYNTHX S12P75G Power SerDes Regulator Power Supply
0.95V power supply for the SerDes
regulator. Connect to PA_VDD1 through
ferrite bead.
PAD_BE_I_A_RXTERMV_LNUM[31:0] S12P75G Power Receiver Termination Voltage Pad input
Use a 1nF bypass cap and terminate to
GND.