NXP Semiconductors MPC5644A Reference Manual page 899

Programmable Window
from Channel 0 in Angle Mode
(TSE1 or TSE2 from figure 42)
TCRCLK
PIN
Angle Tick Generator
Din
Tick Prescaler
Angle Tick
10
Tooth Program Register
2 Dummy Tooth Count
Last Tooth
Angle Counter Logic
Freescale Semiconductor
Filtered Pin Level
TCR2 Filtering
Count
Clock System &
Edge Detect
Channel 1 edge detection
(TS1 or TS2 from figure 42)
Channel 2 edge detection
Tick Rate Register
Integer
15
9
Carry
TCR1
Clock
Hold
Fraction Accumulator
Load
H.Rate
Tooth
Angle Tick Inc/Hold
Angle Tick Reset
Ticks
10
Count Contol &
High Rate Logic
Angle Mode
AM (ETPU_TBCR)
Figure 24-56. eTPU angle counter system
MPC5644A Microcontroller Reference Manual, Rev. 6
Enhanced Time Processing Unit (eTPU2)
To Channel 0 Edge Detection (override its digital filter)
AM
01
10
11
Microengine A-Bus
24
Fraction
9
+
9
9
Tooth Tick Counter
Angle Tick Count
24
TCR2 Reset
24
24
AM (ETPU_TBCR)
Angle Mode
TCR2
24
TCR2 Time Base
899