Stepper Motor Controller (SMC)
MPC5606S Microcontroller Reference Manual, Rev. 7
1122 Freescale Semiconductor
35.2 External signal description
The SMC is associated with 24 pins. Table 35-1 lists the relationship between the PWM channels, signal
pins, PWM channel pairs (motor numbers), coils and nodes they are supposed to drive if all channels are
set to dual full H-bridge configuration.
35.2.1 M0C0M/M0C0P/M0C1M/M0C1P — PWM output pins for Motor 0
High current PWM output pins that can be used for motor drive. These pins interface to the coils of
motor
0. PWM output on M0C0M results in a positive current flow through coil 0 when M0C0P is driven
to a logic high state. PWM output on M0C1M results in a positive current flow through coil 1 when
M0C1P is driven to a logic high state (for details refer to
Section 35.4.1, Modes of operation).
Table 35-1. PWM Channel and Pin Assignment
Pin Name PWM Channel PWM Channel Pair
1
1
A PWM Channel Pair always consists of PWM channel x and PWM channel x+1 (x = 2n). The term
“PWM Channel Pair” is equivalent to the term “Motor”. For example, Channel Pair 0 is equivalent to
Motor
0.
Coil Node
M0C0M 0 0 0 Minus
M0C0P Plus
M0C1M 1 1 Minus
M0C1P Plus
M1C0M 2 1 0 Minus
M1C0P Plus
M1C1M 3 1 Minus
M1C1P Plus
M2C0M 4 2 0 Minus
M2C0P Plus
M2C1M 5 1 Minus
M2C1P Plus
M3C0M 6 3 0 Minus
M3C0P Plus
M3C1M 7 1 Minus
M3C1P Plus
M4C0M 8 4 0 Minus
M4C0P Plus
M4C1M 9 1 Minus
M4C1P Plus
M5C0M 10 5 0 Minus
M5C0P Plus
M5C1M 11 1 Minus
M5C1P Plus