Because of the limits of feedback devices, high speed pseudo noise code generation cannot depend simply on the improvement of clock rate.
由于反馈器件的限制，高速伪码不能采用单独依赖提高时钟频率的方法。
2
The direct digital synthesis (DDS) is adopted to generate the pseudo-random code clock having high precision and stability.
利用直接频率合成技术产生高精度、高稳定度的扩频伪码时钟。
3
It consists of an 8-bit 6502 CPU (without support for decimal mode, also known as BCD), DMA transfer unit, pseudo audio processing unit, 1/12 clock divider, and a bit of logic for address decoding.