PXN20RM Datasheet, PDF (1127/1376 Pages) Freescale Semiconductor, Inc – PXN20 Microcontroller

Analog-to-Digital Converter (ADC)
In both cases, the delay between the positive edge of ctu_trigger signal and the starting of conversion is
fixed. In the first case, the AD_clock is stretched during the low phase in order to guarantee that constraint.
ipg_clk
AD_clk
ctu_trigger
t_conv
ctu_numchannel<5:0>
ctu_nextcmd
ctu_push
ctu_dataout<9:0>
ipg_clk
Figure 34-43. CTU Control Mode Interface Timings (Case 1)
AD_clk
ctu_trigger
t_conv
ctu_numchannel<5:0>
ctu_nextcmd
ctu_push
ctu_dataout<9:0>
Figure 34-44. CTU Control Mode Interface Timings (Case 2)
Freescale Semiconductor
PXN20 Microcontroller Reference Manual, Rev. 1
34-47