PXR40RM Datasheet, PDF (1032/1434 Pages) Freescale Semiconductor, Inc – PXR40 Microcontroller

Enhanced Queued Analog-to-Digital Converter (EQADC)
Field
0
RET_INH
1
2–5
DEST
Table 27-28. ADC_ACR1-8 Field Descriptions
Description
Result Transfer Inhibit / Decimation Filter Pre-Fill. This bit is used to inhibit the transfer of the result data
from the peripheral module to the result queue. When the module is a Decimation Filter, this bit sets the
filter in a special mode (PRE-FILL) in which it does not generate decimated samples out from the
conversion results received from the EQADC block, but the conversion samples are used by the filter
algorithm. This feature allows a proper initialization of the Decimation Filter without generating any
decimated result. Or this bit is useful for sending the result of the ADC to the STAC bus master but not
putting the result in the result queue.
0 Result transfer to result queue / Decimation Filter in filtering mode
1 No result transfer to result queue / Decimation Filter PRE-FILL mode
Reserved
Conversion Result Destination Selection. The DEST[0:3] field selects the Decimation Filter destinations of
the conversion result generated by the Alternate Conversion Command. This field also affects the behavior
of the FMTA bit and the FFMT bit of the conversion command for alternate configurations (see Conversion
Command Format for Alternate Configurations).
Note: Decimation Filter H is only accessible from the CPU, and cannot be accessed by eQADC_B
DEST[0:3]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Description
The conversion result is sent to the RFIFOs.
The data format is specified by the FFMT bit in the conversion command.
The conversion result is sent to Decimation Filter block A.
The conversion result is sent to Decimation Filter block B.
The conversion result is sent to Decimation Filter block C.
The conversion result is sent to Decimation Filter block D.
The conversion result is sent to Decimation Filter block E.
The conversion result is sent to Decimation Filter block F.
The conversion result is sent to Decimation Filter block G.
The conversion result is sent to Decimation Filter blocks A and E.
The conversion result is sent to Decimation Filter blocks B and E.
The conversion result is sent to Decimation Filter blocks C and E.
The conversion result is sent to Decimation Filter blocks D and E.
The conversion result is sent to Decimation Filter blocks A and G.
The conversion result is sent to Decimation Filter blocks B and G.
The conversion result is sent to Decimation Filter blocks C and G.
The conversion result is sent to Decimation Filter blocks D and G.
27-50
PXR40 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor