Si4700/01/02/03-EVB
Confidential Rev. 0.6
13
Table 3.
Radio Panel Screen Explanations
Number/Name
Explanation
1
Tune/Seek
Tune Down (<), Tune up (>) buttons execute a single channel step according to
the channel spacing (17) setting.
Seek down (<<), Seek up (>>) buttons execute a seek up or down to the next
received FM signal meeting or exceeding the seek settings (14, 15, 16) within the
selected band.
2
Frequency Slider Bar, Stereo,
AFC Rail
Indicates the frequency in MHz. To change the Frequency, drag the pointer to the
desired frequency.
The Stereo / Mono Indicator is a tri-state indicator displaying “Stereo” (green)
“Mono” (grey) or forced “Mono” (Yellow). The Stereo / Force Mono state can be
selected by (12).
AFC Rail indicator will be red if the tuned frequency is in an AFC rail state, other-
wise the indicator will be grey.
3
Volume, Mute
Select the Si4700 output volume (0-15) by moving the slider bar pointer. Press
the Mute button to mute the radio. If the radio is muted the button will be red.
Press the Mute button again to remove the muting.
4
Auto Scan, To Presets, Select
Stn
The Auto Scan button will find all the stations with an RSSI above the seek set-
tings (14, 15, 16). After the scan completes the number of stations found will be
displayed and each station will be available in the drop down box. Also, a red indi-
cator mark will be displayed on the Frequency Slider Bar (2) for each station.
The ToPresets Button will program the preset buttons (5) with the 12 strongest
stations.
5
Presets
Press the desired button to tune to the frequency displayed on the button. To
store a new value to the preset button, tune to the desired frequency and then
press and hold the desired button for 1.5 sec. The button will then change to
indicate the stored frequency. This information is stored to a file and used the next
time the program is run.
6
Frequency/RSSI
The frequency indicator shows the channel currently tuned. A new channel can
be selected by typing in the frequency in this edit window.
The RSSI Indicator displays the Received Signal Strength Indicator (RSSI) of the
signal in dBµV.
7
Radio Data Service (RDS)
(Si4701 only)
The RDS Indicator will be green if the chip is receiving RDS information. Also,
the LED on the Evaluation board will flicker. If the RDS indicator is yellow, the
RDS Synchronization field is set (RDSS) but the chip is not detecting RDS data. If
the RDS indicator is grey, no RDS information is being received.
The following data is displayed in the Radio Data Service (RDS) box if the data is
available:
Program Service: 8 character field.
Radio Text: 64 character field.
Program Type: Station category dependent on the Program type decoding, RDS or
RBDS. (RDS or RBDS can be selected with PTYDECODE(13).)
Program Info: a 4 digit hexadecimal number containing an encoded value of the
station call letters.
CT: Clock time will display the current date and time including the GMT offset.
Group Error Rate: Rate of errors expressed as a value between 0.0 (no errors) and
1.0 (all errors)
Summary of Contents for Si4700-EVB
Page 2: ...Si4700 01 02 03 EVB 2 Confidential Rev 0 6 ...
Page 26: ...Si4700 01 02 03 EVB 26 Confidential Rev 0 6 7 Schematics Figure 15 Si4700 Baseboard ...
Page 27: ...Si4700 01 02 03 EVB Confidential Rev 0 6 27 Figure 16 Si4700 01 Daughter Card ...
Page 28: ...Si4700 01 02 03 EVB 28 Confidential Rev 0 6 Figure 17 Si4702 03 Daughter Card ...
Page 31: ...Si4700 01 02 03 EVB Confidential Rev 0 6 31 Figure 22 Baseboard Secondary Side ...
