TMC423_1 TRINAMIC [TRINAMIC Motion Control GmbH & Co. KG.], TMC423_1 Datasheet - Page 10

• Manufacturer Part Number: TMC423_1
• Description: Serial Triple Incremental Encoder Interface
• Manufacturer: TRINAMIC [TRINAMIC Motion Control GmbH & Co. KG.]

TMC423 Data Sheet – (V1.13 / June 20
3.2
3.2.1
This example illustrates the encoder connection and the use of reference switches with the TMC423
and additionally the SPI interface connections between TMC423, TMC428 and a microcontroller. The
communication to the drivers (e.g. TMC236) is performed via SPI by the TMC428 motion control chip.
3.2.2
Additionally to the previous example the use of the TMC423 as step/direction converter is shown. The
reference switches can be used as above.
Copyright © 2004 TRINAMIC Motion Control GmbH & Co. KG
6x Reference Switch
Inputs (active high)
from nSCS_S
+5V
+5V
of TMC428
Application Examples
Application with TMC236 Stepper Motor Driver
Application with Step / Direction Power Stage
10k each
10k each
16MHz
16MHz
Figure 4: Example for Application with TMC236 Stepper Motor Driver
Figure 5: Example for Application with Step / Direction Power Stage
+5V
10k
+2.5V
+2.5V
10k
GND
+5V
GND
+5V
10k
CLK
RESET
ENC1_A
ENC1_B
ENC1_N
ENC2_A
ENC2_B
ENC2_N
ENC3_A
ENC3_B
ENC3_N
VCCI1 - VCCI5
VCCA1 - VCCA4
SDI_D
SCK_D
NSCS_D
STOPR0 - STOPR2
STOPL0 - STOPL2
CLK
RESET
ENC1_A
ENC1_B
ENC1_N
ENC2_A
ENC2_B
ENC2_N
ENC3_A
ENC3_B
ENC3_N
VCCI1 - VCCI5
VCCA1 - VCCA4
SDI_D
SCK_D
TRST
TMS
STOPR0 - STOPR2
STOPL0 - STOPL2
TMC423
th
TMC423
, 2007)
SW_ROW0 - SW_ROW5
SW_ROW3 - SW_ROW5
GND1 - GND8
NSCS428
SDO428
GND1 - GND8
NSCS
NSCS428
REF1
REF2
REF3
NSCS_D
SDO
TRST
SDO428
SCK
TMS
SDO_D
SDI
NC2
NC1
TCK
SCK_D
STEP1
STEP2
STEP3
TDI
SDI_D
NSCS
DIR1
DIR2
DIR3
SDO
SCK
SDI
TCK
NC2
NC1
TDI
+5V
GND
10k
GND
16MHz
Notes:
1. Application without LED and Switch matrix.
2. If the NSCS428 pin is not in use it has to be tied to +5V.
3. NSCS_D activates the reference switches (inputs
STOPRx/STOPLx and outputs REFx).
µC
µC
Notes:
1. Application without LED/switch matrix and
reference switches.
2. If the NSCS428 pin is not in use, it has to be tied
to +5V.
CLK
REF1
REF2
REF3
SDI_C
SCK_C
SDO_C
nSCS_C
TMC428
Step/DIR
to
Drivers
SCK_C
SDI_C
SDO_C
nSCS_C
SDO_S
SCK_S
SDI_S
nSCS_S
TMC428
nSCS_S
SDO_S
SCK_S
SDI_S
GND
Test
V33
V5
to nSCS_D
of TMC423
GND
CLK
Test
V33
V5
+5V
GND
470nF
SPI
to
Drivers
GND
+5V
10/22
16MHz
470nF