Chapter 17 Stepper Stall Detector (SSDV2) Block Description
S12ZVHY/S12ZVHL Family Reference Manual Rev. 1.05
622
Freescale Semiconductor
•
16-bit modulus down counter with interrupt
17.1.3
Block Diagram
Figure 17-1. SSD Block Diagram
Coil SIN
Coil COS
Bus Clock
VDDM
COSP
COSM
T1
T2
T3
VSSM
1/2
1/2
1/2
1/8
4:1 MUX
VDDM
T4
VSSM
S1
S3
S2
S4
VDDM
SINP
SINM
T5
T6
T7
VSSM
VDDM
T8
VSSM
S5
S7
S6
S8
16-bit accumulator
register
VDDM
VSSM
R2
R2
DFF
16-bit modulus
down counter
R1
C1
+
–
+
–
16-bit load
register
sigma-delta converter
P
A
D
P
A
D
P
A
D
P
A
D
integrator
reference
1/8
2:1 MUX
DAC
(analog)