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TEA5767HN Datasheet

  • TEA5767HN

  • Low-power FM stereo radio

  • Philips

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Philips Semiconductors
TEA5767HN
Low-power FM stereo radio for handheld applications
7.13 Signal dependent mono to stereo blend
With a decreasing RF input level the MPX decoder blends from stereo to mono to limit the
output noise. The continuous mono to stereo blend can also be programmed via the bus
to an RF level depending switched mono to stereo transition. Stereo Noise Cancelling
(SNC) can be switched off via the bus.
7.14 Signal dependent AF response
The audio bandwidth will be reduced with a decreasing RF input level. This function can
be switched off via the bus.
7.15 Software programmable ports
Two software programmable ports (open-collector) can be addressed via the bus.
The port 1 (pin SWPORT1) function can be changed with write data byte 4 bit 0
(see
Table 13).
Pin SWPORT1 is then output for the ready 鏗俛g of read byte 1.
7.16 I
2
C-bus and 3-wire bus
The 3-wire bus and the I
2
C-bus operate with a maximum clock frequency of 400 kHz.
Before any READ or WRITE operation the pin BUSENABLE has to be HIGH for at
least 10
碌s.
The I
2
C-bus mode is selected when pin BUSMODE is LOW, when pin BUSMODE is HIGH
the 3-wire bus mode is selected.
TEA5767HN_4
漏 Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 04 鈥?20 February 2006
8 of 39

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