PXR40RM Datasheet, PDF (1111/1434 Pages) Freescale Semiconductor, Inc – PXR40 Microcontroller

Enhanced Queued Analog-to-Digital Converter (EQADC)
Digital Control
Logic for analog
device
External
Triggers
Trigger and
Queue Control
Logic
Analog to Digital Converter
Command Queues
Result Queues
Interrupt Request
Figure 27-78. QADC Overview
EQADC
Analog to Digital Converter
External
Triggers
Trigger and
FIFO Control
Logic
DMA/Interrupt
Requests
CFIFOs
RFIFOs
System Bus
DMAC/CPU
CQueues
RQueues
Figure 27-79. EQADC System Overview
The EQADC system consists of these parts: queues in RAM, the EQADC, and on-chip ADCs. As
compared with the QADC, the EQADC system requires extra hardware.
1. A DMA or an MCU is required to move data between the EQADC’s FIFOs and Queues in the
system memory.
Freescale Semiconductor
PXR40 Microcontroller Reference Manual, Rev. 1
27-129