PDSP16350 Mitel Networks Corporation, PDSP16350 Datasheet - Page 9

• Manufacturer Part Number: PDSP16350
• Description: I/Q Splitter/NCO
• Manufacturer: Mitel Networks Corporation

Modulated Phase
tude modulation. For example, if a jump of 180 degrees is
required, this can be done with a value of :
cycle, then the normal increment value is re-loaded in the
following cycle.
Relative phase jumps may be made with or without ampli-
DIN33:0 = 10 0000 0000 0000 0000 0000 0000 0000 0000
This is loaded into the phase increment register for one
CLK
MODE
RESET
JUMP
DATA IN
RESULT
Device Reset
1
Apply First
2
A
Data
3
B
Fig. 9 Phase Modulation Timing Diagram
4
C
5
Absolute Phase
D
Jump
absolute jump to a phase value can be made, see Fig. 9. This
can be done by activating the JUMP input during one cycle and
also presenting the new phase value at the same time. For
example, if a jump to 270 degrees is required :
to 0 degrees is needed. This avoids using the DIN inputs and
can be used with or without amplitude modulation. The reset
function is internally synchronised to the input clock.
Alternatively, if no amplitude modulation is needed, an
DIN33:0 = 11 0000 0000 0000 0000 0000 0000 0000 0000
The RES (reset) input can alternatively be used if a jump
30
31
First Result
Available
32
A
33
B
Absolute phase
34
jump result
C
35
D
PDSP16350
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