TMC428_06 Datasheet, PDF (32/58 Pages) List of Unclassifed Manufacturers – Intelligent Triple Stepper Motor Controller with Serial Peripheral Interfaces

TMC428 DATASHEET (v. 2.02 / April 26^th, 2006)
32
+VCC +VCC +VCC
nSCS_C
REF1 REF2 REF3
nSCS_S
SDI_C
TMC428
SDO_S
SCK_C
SDO_C _CLK
V33
SCK_S
V5 TEST GND ^SDI_S
Figure 9-3: Reference switch configuration ‘left-side-only’ for mot1r=0 (and refmux=0)
+VCC
+VCC +VCC
nSCS_C
REF1 REF2 REF3
nSCS_S
SDI_C
TMC428
SDO_S
SCK_C
SDO_C _CLK
V33
SCK_S
V5 TEST GND ^SDI_S
no reference switch for stepper motor 3
Figure 9-4: Reference switch configuration ‘two-one-null’ for mot1r=1 (and refmux=0)
nSCS_C
REF1 REF2 REF3
nSCS_S
74HC157
/EN
SEL1/ /0
A
< MUX
A0
A1
B
B0
B1
C
C0
C1
D
D0
D1
+VCC
REF2_RIGHT
REF2_LEFT
REF3_RIGHT
REF3_LEFT
REF1_LEFT
SDI_C
TMC428
SDO_S
SCK_C
SDO_C _CLK
V33
SCK_S
V5 TEST GND ^SDI_S
REF1_RIGHT
Figure 9-5: Reference switch multiplexing with 74HC157 (refmux=1)
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