Skyworks Si4731-DEMO, Руководство пользователя

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Si4731-DEMO
8 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
Rev. 0.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • October 4, 2021
The FM and AM radio parameters which can be configured from setup menu are listed below in Table 2.
UP/
DOWN
Hold
Time <
0.5 s
In setup menu,
change the current
calendar item by one
step.
In setup menu, change the current parameter by one step.
In radio mode, tune up or down by one step.
0.5 s <
Hold
Time
< 3 s
Perform a station seek.
Hold
Time
> 3 s
Fast parameter setting Fast parameter setting.
MSCAN None Scan for all valid stations and save them to presets.
M+/ M– In setup menu, select
next calendar item.
In setup menu, select next adjustable item.
In radio mode, tune to the next preset station.
Vol+ /
Vol–
< 3 s None Increase or decrease volume 1 step.
> 3 s Quickly increase or decrease volume.
FUNC/DIGIT None Shift the keyboard between normal function and digital input mode.
Combination
keying
None A: Radio IC version
B: Firmware version
C: Varactor reading
D: AGC status
Table 2. Radio Configuration Parameters
FM Parameter AM Parameter
Spacing: 50/100/200 kHz
Default: 100 kHz Spacing: 1/9/10 kHz
Default: 9 kHz
RSSI Seek: 0–127 dBµV
Default: 20 dBµV RSSI Seek: (0–63 dBµV
Default: 25 dBµV
SNR Seek: 0–127 dB
Default: 03 dB SNR Seek: 0–63 dB
Default: 05 dB
Pre-emphasis: 50 or 75 µs
Default: 75 µs Pre-emphasis: 00 disable, 50 µs
Default: 00
Band High Threshold: Max 108 MHz
Default:107.90 MHz Band High Threshold: Max 1710 kHz
Default:1710 kHz
Table 1. Key Function Description (Continued)
Button/Mode Calendar Mode
Tuner Off
Radio AM/FM Mode
Tuner On
Note: Combination keying is entered and exited from Radio Mode by pressing and holding the SET key then pressing the
BANDS key. A combination of the SET and the MSCAN keys will cycle through the available display items.