Digital IncrEncoder Rev03

Functionality

• Connects three incremental encoder FPGA

• Provides isolated 5V supply to encoder

• Reads differential signals from encoder

Pinout (exemplary for Encoder 1)

Pin	D-Sub 9	FPGA	Kubrich Encoder
0+	3	Dig_11_Ch5	blue
0-	4		red
A+	8	Dig_12_Ch5	green
A-	7		yellow
B+	5	Dig_13_Ch5	grey
B-	9		pink
Vcc	2		brown
GND	1		white

Pinout (exemplary for Encoder 2)

Pin	D-Sub 9	FPGA	Kubrich Encoder
0+	3	Dig_14_Ch5	blue
0-	4		red
A+	8	Dig_15_Ch5	green
A-	7		yellow
B+	5	Dig_16_Ch5	grey
B-	9		pink
Vcc	2		brown
GND	1		white

Pinout (exemplary for Encoder 3)

Pin	D-Sub 9	FPGA	Kubrich Encoder
0+	3	Dig_17_Ch5	blue
0-	4		red
A+	8	Dig_18_Ch5	green
A-	7		yellow
B+	5	Dig_19_Ch5	grey
B-	9		pink
Vcc	2		brown
GND	1		white

• Program CPLDs with firmware, see Programming the CPLD for details

Known issues

• Rev 03: Not working LED

To get the LED working, an additional connection, marked by the red box in the picture above, has to be soldered to the PCB.

Pin configuration

Package PIN D5	Port	Signal
J15	Dig_19_Ch5	Encoder_3_B
A13	Dig_18_Ch5	Encoder_3_A
K15	Dig_17_Ch5	Encoder_3_I
B13	Dig_16_Ch5	Encoder_2_B
G14	Dig_15_Ch5	Encoder_2_A
A14	Dig_14_Ch5	Encoder_2_I
G15	Dig_13_Ch5	Encoder_1_B
B14	Dig_12_Ch5	Encoder_1_A
E15	Dig_11_Ch5	Encoder_1_I

Vivado block design with three IP-Cores on D5

• For using all channels of the card, the user has to change the block design in vivado (three IP-Cores on D5 connected).

Compatibility

• Slots D1 to D5 can be used without limitations, D5 is suggested.

• Block design in vivado has to be adapted with three IP-Cores for reading out.

See also

• Schematic V03

• Programming the CPLD

Designed by

Michaela Hlatky (THN) in 06/2022