73M1903C
Modem Analog Front End
DATA SHEET
List of Figures
Figure 1: SCLK and
FS
with SckMode=0..................................................................................................
7
Figure 2: Control frame position vs. SPOS
.............................................................................................. 7
Figure 3: Serial Port Timing Diagrams......................................................................................................
8
Figure 4: 73M1903C Host connection in master and slave mode ................................................................ 9
Figure 5: 73M1903C Daisy chaining for master/slave mode and slave modes
.................................... 9
Figure 6: Clock Generation ......................................................................................................................... 17
Figure 7: Analog block diagram .................................................................................................................. 20
Figure 8: Overall TX path frequency response at 8kHz sample rate.......................................................... 21
Figure 9: Frequency response of TX path for DC to 4kHz in band signal at 8kHz sample rate........
22
Figure 10: Overall receiver frequency response at 8kHz sample rate.................................................
25
Figure 11: Rx passband response at 8kHz sample rate........................................................................
26
Figure 12: RXD Spectrum of 1kHz tone
.................................................................................................. 27
Figure 13: RXD Spectrum of 0.5kHz, 1kHz, 2kHz, 3kHz and 3.5kHz tones of Equal Amplitudes......
27
Figure 14: Serial Port Data Timing
.......................................................................................................... 31
Figure 15: Typical DAA block diagram........................................................................................................ 37
Figure 16: Single transmitter arrangement ................................................................................................. 38
Figure 17: Dual transmitter arrangement .................................................................................................... 39
Figure 18: NCO block diagram ................................................................................................................... 40
Figure 19: PLL Block Diagram .................................................................................................................... 41
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2005-2008 TERIDIAN Semiconductor Corporation
Rev 4.3