mpc8270vr Freescale Semiconductor, Inc, mpc8270vr Datasheet - Page 18

• Manufacturer Part Number: mpc8270vr
• Description: Mpc8275 Powerquicc Ii Integrated Communications Processor
• Manufacturer: Freescale Semiconductor, Inc

AC Electrical Characteristics
Figure 7
Figure 8
18
PIO/IDMA/TIMER[TGATE assertion] input signals
shows TDM input and output signals.
shows PIO and timer signals.
TIMER input signal [TGATE deassertion]
TIMER(sp42/43)/ PIO(sp42a/sp43a)
Note: There are four possible TDM timing conditions:
Note: TGATE is asserted on the rising edge of the clock; it is deasserted on the falling edge.
1. Input sampled on the rising edge and output driven on the rising edge (shown).
2. Input sampled on the rising edge and output driven on the falling edge.
3. Input sampled on the falling edge and output driven on the falling edge.
4. Input sampled on the falling edge and output driven on the rising edge.
TDM output signals
TDM input signals
MPC8280 PowerQUICC™ II Family Hardware Specifications, Rev. 1.8
Serial CLKin
IDMA output signals
output signals
Figure 8. PIO and Timer Signal Diagram
(See note)
(See note)
Figure 7. TDM Signal Diagram
Sys clk
sp22
sp20
sp40/sp41
sp21
sp22
sp42/sp43
sp23
Freescale Semiconductor
sp42a/sp43a
sp42/sp43
sp23