PDSP16350 Datasheet (Mitel Networks Corporation)

PDSP16350, I/Q Splitter/NCO

DIN33:0 Data bus for the input register.

This input register provides a 34 bit, incremental or absolute, phase value, if the mode pin is low.

Alternatively if the mode pin is high, it provides either an 18 bit phase increment value, via D17:0, and a 16 bit scale value via D33:18 or a 34 bit phase

PDSP16350 I/Q Splitter/NCO Supersedes version in December 1993 Digital Video & DSP IC Handbook, HB3923-1 DS3711 - 2.3 September 1996 PDSP16350 The PDSP16350 provides an integrated solution to the need for very accurate, digitised, sine and cosine waveforms.

Both these waveforms are produced simultaneously, with 16 bit amplitude accuracy, and are synthesised using a 34 bit phase accumulator.

The more significant bits of this provide 16 bits of phase accuracy for the sine and cosine look up tabl

PDSP16350 Features

* s s s s s Direct Digital Synthesiser producing simultaneous sine and cosine values 16 bit phase and amplitude accuracy, giving spur levels down to - 90 dB Synthesised outputs from DC to 10 MHz with accuracies better than 0.001 Hz Amplitude and Phase modulation modes 84 pin PGA or 132 pin QFP Fig. 1