TEA5767HN Просмотр технического описания (PDF) - Philips Electronics

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TEA5767HN

Low-power FM stereo radio for handheld applications

Philips Electronics 

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 flag of read byte 1.

7.16 I2C-bus and 3-wire bus

The 3-wire bus and the I2C-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 µs.

The I2C-bus mode is selected when pin BUSMODE is LOW, when pin BUSMODE is HIGH

the 3-wire bus mode is selected.

TEA5767HN_4

Product data sheet

Rev. 04 — 20 February 2006

© Koninklijke Philips Electronics N.V. 2006. All rights reserved.

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