User`s guide

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Si47xx-EVB

Rev. 0.8 47

5.6. FM Transmitter Settings (Digital Mode) Property Window

FM transmitter settings can be configured through the properties window by selecting WindowProperties.

Properties are grouped into categories which can be selected from the drop-down box in the upper right of the

window. For convenience, all FM transmitter properties are also located in Window

Properties TX: All. Digital

mode properties will be available if CODED or SPDIF modes was selected in the initialization window.

Figure 40. FM Transmitter Settings in Digital Mode Property Window

Table 10. FM Transmitter Settings in Digital Mode Property Window Descriptions

Item Description Range Applicable

Devices

Reference Clock

Frequency (Hz)

This field is used to specify the frequency of the refer-

ence clock. The input to the RCLK pin divided by the

prescaler is the reference clock. The reference clock

must be in the range of 31130 to 34406 Hz.

31130–34406 Hz All

Reference Clock

Prescaler

This field is used to specify the prescaler value. The

input to the RCLK pin divided by the prescaler is the

reference clock. The reference clock must be in the

range of 31130 to 34406 Hz.

1–4095 All

Digital Format

Sets I

S of left justified digital format.

Left-Justified, I

DSP (MSB on first

DCLK), or DSP

(MSB on second

DCLK)

All except

Si4710-A10

Digital Sample

Precision

Select the precision of the digital audio input.

8, 16, 20, 24 bits All

Digital Sample

Rate (Hz)

Sets the DFS digital sample rate. Must be set to 0 Hz

before DCLK/DFS is removed.

0, 32000–

48000 Hz

All except

Si4710-A10