20 CONTENTS TS-590S
4 DSP
Figure 4-1 describes the DSP*1 of the TS-590S and peripheral devices connected to the DSP
including ADCs*2 and DACs*3.
Figure 4-1 TS-590S DSP and Peripheral Devices
*1 DSP: digital signal processor
*2 ADC: A/D converter
*3 DAC: D/A converter
The heart of the signal processing function is a 32-bit floating point TMS320C6726B DSP from Texas
Instruments Incorporated (Figure 4-2) and it is operated at the clock frequency of 221 MHz.
For ADCs placed at the receive IF signal input and the microphone input, 24-bit ΔΣADC AK5385Bs
from AKM Semiconductor, Incorporated are placed, and for DACs placed at the transmit IF signal
output and at the audio output, 24-bit ΔΣDAC AK4382As also from AKM Semiconductor,
Incorporated are placed. For other applications such as at the external terminals, USB audio, and
audio input to and output from the optional VSG-1, 24-bit ΔΣADCs and ΔΣDACs are implemented.
All these converters are operated at the sampling frequency of 96 kHz.
Figure 4-2 TMS320C6726B
4.1 Multipurpose 32-bit Floating Point DSP
ADC
AK5385B
DAC
AK4382A
DAC
AK4387
DAC
AK4387
ADC
WM8782
FLASH
MEMORY
VGS䊶AO
MIC
RIF/DET
ANI/USB䊶AI
µ com
AF
TIF/MOD
ANO
VGS䊶AI
USB䊶ANO
AGCV
DSP
TMS320C6726B
221.184 MHz