SI4770-77-A20 Datasheet, PDF (35/54 Pages) Silicon Laboratories – HIGH-PERFORMANCE CONSUMER ELECTRONICS

Si4770/77-A20
4.9.2. ZIF I/Q Sample Rates and Clocking Requirements
The device supports a number of industry-standard sampling rates including 650, 675, and 744.1875 kHz.
The external crystal and/or reference clock frequency must be the following to support the following ZIF I/Q
samples rates for interface to an HD radio demodulator/decoder or DSP.
Table 15. Crystal/Reference Clock Frequency Requirements for the ZIF I/Q Sample Rates and
Bit Clock Rates Supported
RCLK/XTAL
Frequency (MHz)
36.4000
37.8000
37.209375
IQFS ZIF I/Q
Sample Rate (kHz)
650.0000
325.0000
40.6250
675.0000
337.5000
42.1875
744.1875
372.0938
46.5117
IQCLK
I/Q Bit Clock (MHz)
10.4000
5.2000
2.2750
10.8000
5.4000
2.3625
14.88375
7.4419
1.8605
Broadcast Reception
Modes
AM/FM HD-Radio
FM Analog
AM Analog/HD-Radio
AM/FM HD-Radio
FM Analog
AM Analog/HD-Radio
AM/FM HD-Radio
FM Analog
AM Analog/HD-Radio
Rev. 0.9
35