AN2897 Freescale Semiconductor / Motorola, AN2897 Datasheet - Page 4

• Manufacturer Part Number: AN2897
• Description: Using the eTPU Angle Clock
• Manufacturer: Freescale Semiconductor / Motorola

eTPU Angle Clock Hardware
4
.
Tooth Program Register
Angle Counter Logic
10
2
Angle Tick Generator
from Channel 0 in Angle Mode
Dummy Tooth Count
TCRCLK
Programmable Window
Tick Prescaler
PIN
Last Tooth
Din
Angle Tick
Ticks
Hold
10
H.Rate
Figure 3. eTPU Angle Clock Tick Generator
Clock System &
TCR2 Filtering
Edge Detect
15
AM (ETPUTBCR)
High Rate Logic
Count Contol &
Angle Mode
Using the eTPU Angle Clock, Rev. 0
TCR1
Load
Clock
Filtered Pin Level
9
Carry
Tooth: Advance, Reset
Count
Angle Tick Inc/Hold
Angle Tick Reset
Fraction Accumulator
Tick Rate Register
Integer
Angle Tick Count
Tooth
+
24
Fraction
9
9
To Channel 0 Edge Detection (override its digital filter)
9
TCR2 Clock
10
2
Microengine A-Bus
AM (ETPUTBCR)
Angle Mode
TCR2
TCR2 Time Base
Freescale Semiconductor
24
24
24
TDL assertion
on channel 0