TEA5767HN Просмотр технического описания (PDF) - Philips Electronics
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TEA5767HN Datasheet PDF : 39 Pages
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Philips Semiconductors
TEA5767HN
Low-power FM stereo radio for handheld applications
Power on:
Mute, stand-by activated
All other status is random
Complete initialization by
microprocessor is required
Write enable
no
activated?
yes
Reset bit counter:
Bits are clocked into the
receive register
Completed bytes are written to
the destinastion register
Use value of tuning memory:
Write result to the programmable
divider (also available at the bus)
Wait 10 ms. Have the signal level
available at the bus
Search
no
Mode?
yes
no
Signal
level OK?
yes
Reset IF counter and enable counting
Wait for result
Have the result available for the bus
Search
no
upwards?
yes
Add 100 kHz to the tuning memory
Search
Mode?
no
Substract 100 kHz to the tuning memory
yes
no IF frequency
OK?
yes
Set 'found' flag
Upper
tuning limit
yes
exceeded?
no
Lower
tuning limit
exceeded?
no
Set 'band limit' flag
Fig 3. Flowchart auto search or preset
001aae346
TEA5767HN_4
Product data sheet
Rev. 04 — 20 February 2006
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
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