Specifications

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SLWS142J − JANUARY 2003 − REVISED AUGUST 2007
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49
23
23
I
Transmit
Output
Formatter
Shift
Down
by 4
and
Round
19
22 22
19
22
22
21
21
Channel A
Q
I
Channel B
Q
21
21
I
21
21
Channel D
Q
I
Channel C
Q
21
21
Sum Tree
Sum In
Upshift
0−7
and
Limit
sum_shift
Figure 25. Sum Tree and Transmit Output Formatter − 22-Bit SumIO Mode
14.10 Sum and Format Details
Figure 26 shows the sum and format blocks in more detail. Normally the configuration software is used to set all these
parameters (see Table 4 and Figure 26).
Figure 26 shows the sum and format blocks in more detail. Normally the cmd5016 configuration software uses just
tout_res, tout_sumio, tout_cmplx, tout_nsig, overall_gain and split_IQ to set all the parameters shown in Figure 26.
Details of the implementation are provided in the following sections for special applications where the parameters
may want to be set manually. Using manual settings is discouraged and should not be necessary.