TMC428_06 Datasheet, PDF (56/58 Pages) List of Unclassifed Manufacturers – Intelligent Triple Stepper Motor Controller with Serial Peripheral Interfaces

TMC428 DATASHEET (v. 2.02 / April 26^th, 2006)
56
Table 12-1: Scheme of ¼ sine wave period with 6 bit resolution and 64 ( 32 x 2 ) values ...................40
Table 12-2 - Datagrams for initialization of a quarter sine wave period microstep look-up-table.........40
Table 12-3: Phase Bits and Fast Decay Control Bits............................................................................41
Table 12-4: Wave look-up table (LUT) indices for different microstep resolutions ..............................42
Table 14-1: Dimensions of Package SSOP16, 150 MILS (Note: BSC ≈ Best Case) ...........................45
Table 14-2: Dimensions of Package SOP24, 300 MILS (Note: BSC ≈ Best Case) .............................46
Table 14-3: Dimensions of Package DIL20, 300 MILS (Note: BSC ≈ Best Case) ...............................47
Table 16-1: Characteristics of the on-chip voltage regulator ................................................................49
Table 17-1: Characteristics of the on-chip power-on-reset...................................................................50
Table 18-1: Absolute maximum ratings ................................................................................................51
Table 18-2: DC characteristics .............................................................................................................51
Table 18-3: DC characteristics – 3.3V supply mode ............................................................................51
Table 18-4: DC characteristics – 5V supply mode ...............................................................................51
Table 18-5: Power dissipation ..............................................................................................................52
Table 18-6: General timing parameters................................................................................................52
22 Table of Contents
1 Features..........................................................................................................................................1
2 General Description ......................................................................................................................3
2.1 Step Frequencies .....................................................................................................................4
2.2 Modes of Motion.......................................................................................................................4
2.3 Notation of Number Systems & Notation of Two to the Power of n .........................................5
2.4 Signal Polarities........................................................................................................................5
2.5 Units of Motion Parameters......................................................................................................5
2.6 Representation of Signed Values by Two’s Complement ........................................................5
2.7 Tables of Contents ...................................................................................................................5
3 Package Variants...........................................................................................................................5
4 Pinning ...........................................................................................................................................6
5 Functional Description and Block Diagram................................................................................7
6 Serial Peripheral Interfaces ..........................................................................................................8
6.1 Automatic Power-On Reset......................................................................................................8
6.2 Serial Peripheral Interface for µC.............................................................................................8
6.3 Serial Peripheral Interface to Stepper Motor Driver Chain.......................................................9
6.4 Datagram Structure................................................................................................................11
6.5 Simple Datagram Examples ..................................................................................................13
7 Address Space Partitions ...........................................................................................................14
7.1 Read and Write ......................................................................................................................14
7.2 Register Set............................................................................................................................14
7.3 RAM Area...............................................................................................................................14
8 Register Description ...................................................................................................................16
8.1 x_target (IDX=%0000)............................................................................................................16
8.2 x_actual (IDX=%0001) ...........................................................................................................16
8.3 v_min (IDX=%0010) ...............................................................................................................16
8.4 v_max (IDX=%0011) ..............................................................................................................17
8.5 v_target (IDX=%0100)............................................................................................................17
8.6 v_actual (IDX=%0101) ...........................................................................................................17
8.7 a_max (IDX=%0110)..............................................................................................................17
8.7.1 a_max_lower_limit & a_max_upper_limit for ramp_div ≠ pulse_div ...............................17
8.8 a_actual (IDX=%0111) ...........................................................................................................18
Copyright © 2004-2006, TRINAMIC Motion Control GmbH & Co. KG