PXR40RM Datasheet, PDF (984/1434 Pages) Freescale Semiconductor, Inc – PXR40 Microcontroller

Enhanced Queued Analog-to-Digital Converter (EQADC)
27.1.1 Analog to Digital Conversion Sub-system
Figure 27-1 shows how two eQADC modules fit into the overall analog to digital conversion sub-system.
ETRIG0
ETRIG1
VDDA_AN_A
VDDA_DIG_A
VSSA_AN_A
VSSA_DIG_A
VRH_A
VRL_A
REFBYPCA
REFBYPCA1
ANA0
ANA23
Temp Sensor
Absolute Ref
AN24
AN39
ANB0
ANB23
VDDA_AN_B
VDDA_DIG_B
VSSA_AN_B
VSSA_DIG_B
VRH_B
VRL_B
REFBYPCB
REFBYPCB1
SIU
PIT/RTI
eMIOS
eTPU
External Trigger
24
eQADC_A
time
base
ADC0
ADC1
eQADC_B
ADC0
CFIFOx
RFIFOx
16
STAC Bus
Interface
conversion commands
CQueue y
results
RQueue y
DMA
or
CPU
SYSTEM
RAM
CFIFOx
CQueue y
ADC1
RFIFOx
16 _{STAC Bus}
Interface
Parallel Side
Interface
RQueue y
24
Decimation Filter
(8)
Figure 27-1. Analog to Digital Conversion Sub-system
27-2
PXR40 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor