FPGA4U Mubus Extension

Extension for 20pins connector with Mubus connectors. This module provide an adapter for different kind of connectors used at LAP/EPFL for different interfaces.

The connection to FPGA4U is provided by the 20 pins adapter with :

Gnd - 3.3V power supply
An Ouput Clk that can by generated by a pll inside the FPGA (depend on the design) or I/O
An Input Clk that can be used as input clk to the FPGA, or I/O
16 bits of general purpose to/from the FPGA

If the design has to be connected to the 20 pins Muibus interface a specific VHDL adapter module is needed.

From the 16 pins I/O, they are connected to 2 x 10 pins connectors with :

Power supply Gnd - 3.3V
8 bits I/O

Schematic

FPGA4U Mubus Extension (.pdf)

Photo

Mubus Extension on FPGA4U board

Mubus Extension, micro-match 20 pins and AMP 2.54mm

Connector pinning

Port 20 Pin Table

20Pin Num J1	FPGA Pin	FPGA function	Mubus Pin J2/J5	Mubus Name	10 pins conn.
1			11	3.3V	J3.10, J4.10
3	PIN_U18	Ext_Clk_In (IO/PLL4_OUTn)	12	Mubus_IRQ_n
5	PIN_H8	SWITCH0[1]	3	Mubus_DATA[1]	J3.3
7	PIN_H9	SWITCH0[3]	5	Mubus_DATA[3]	J3.5
9	PIN_F10	SWITCH0[5]	7	Mubus_DATA[5]	J3.7
11	PIN_E11	SWITCH0[7]	9	Mubus_DATA[7]	J3.9
13	PIN_C7	SWITCH1[1]	13	Mubus_R_nW	J4.3
15	PIN_E8	SWITCH1[3]	15	Mubus_Adr[1]	J4.5
17	PIN_H10	SWITCH1[5]	17	Mubus_Adr[3]	J4.7
19	PIN_F11	SWITCH1[7]	19	Mubus_Adr[5]	J4.9

20Pin Num J1	FPGA Pin	FPGA function	Mubus Pin J2/J5	Mubus Name	10 pins conn.
2	PIN_T18	Ext_Clk_Out (IO/PLL4_OUTp)	-
4	PIN_G7	SWITCH0[0]	2	Mubus_DATA[0]	J3.2
6	PIN_F8	SWITCH0[2]	4	Mubus_DATA[2]	J3.4
8	PIN_E9	SWITCH0[4]	6	Mubus_DATA[4]	J3.6
10	PIN_G11	SWITCH0[6]	8	Mubus_DATA[6]	J3.8
12	PIN_H7	SWITCH1[0]	10	Mubus_P_n	J4.2
14	PIN_G8	SWITCH1[2]	14	Mubus_Adr[0]	J4.4
16	PIN_F9	SWITCH1[4]	16	Mubus_Adr[2]	J4.6
18	PIN_H11	SWITCH1[6]	18	Mubus_Adr[4]	J4.8
20			1	Gnd	J3.1, J4.1

Tcl file assignement

For .tcl assignment file :

# Connector J5 used for Mubus

############################################

set_location_assignment PIN_U18 -to Mubus_IRQ_n

set_location_assignment PIN_G7 -to Mubus_DATA[0]

set_location_assignment PIN_H8 -to Mubus_DATA[1]

set_location_assignment PIN_F8 -to Mubus_DATA[2]

set_location_assignment PIN_H9 -to Mubus_DATA[3]

set_location_assignment PIN_E9 -to Mubus_DATA[4]

set_location_assignment PIN_F10 -to Mubus_DATA[5]

set_location_assignment PIN_G11 -to Mubus_DATA[6]

set_location_assignment PIN_E11 -to Mubus_DATA[7]

set_location_assignment PIN_H7 -to Mubus_P_n

set_location_assignment PIN_C7 -to Mubus_R_nW

set_location_assignment PIN_G8 -to Mubus_Adr[0]

set_location_assignment PIN_E8 -to Mubus_Adr[1]

set_location_assignment PIN_F9 -to Mubus_Adr[2]

set_location_assignment PIN_H10 -to Mubus_Adr[3]

set_location_assignment PIN_H11 -to Mubus_Adr[4]

set_location_assignment PIN_F11 -to Mubus_Adr[5]

FPGA4U Mubus Extension

From Fpga4u

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