MPC563XM Reference Manual, Rev. 1
Freescale Semiconductor
1125
Preliminary—Subject to Change Without Notice
The FLUSH bit indicates to the Decimation Filter block to execute a flush command, thus some
internal registers are placed in the initial state. This bit is self negated and it is cleared only when the
data is read and the flush is executed. For more details refer to
Section 25.5.9, “Flush Command
1 = Decimation Filter flush request
0 = Decimation in normal operation
INPBUF[15:0] — Input Buffer Data
The INPBUF[15:0] bit field carries the data to be loaded in the decimation filter Input Buffer. This data
buffer can be written by the PSI sky-blue interface or by the SoC Sky-blue interface. Refer to
Section 25.5.3, “Input Buffer Description,”
for more details.
25.4.2.4
Interface Output Buffer Register (DECFILTER_OB)
DECFILTER_OB address: Decimation Filter base a $014
Figure 25-5. Interface Output Buffer Register (DECFILTER_OB)
OUTTAG[3:0] — Decimation filter output tag bits
The OUTTAG[3:0] bit field can be defined as a selector signal and it is used to identify different
destinations for the OUTBUF[15:0] data. When in stand alone mode (ISEL=1), this field is all zero.
In eQADC application, it is used to address the appropriate RFIFO in the eQADC block. In this case,
the possible values are only from 0000 to 0101.
OUTBUF[15:0] — Output Buffer Data
The OUTPBUF[15:0] bit field is the result data in the decimation filter Output Buffer. It represents a
fixed point signed number in 2-complement format and it is updated only when a decimated result is
ready to be transmitted. This means this register contains the last decimated result of the filter.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
0
0
0
0
0
0
0
0
0
0
0
0
OUTTAG[3:0]
W
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R
OUTBUF[15:0]
W
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
= Unimplemented or reserved
