tea5764hn-n2 NXP Semiconductors, tea5764hn-n2 Datasheet - Page 11

• Manufacturer Part Number: tea5764hn-n2
• Description: Fm Radio + Rds
• Manufacturer: NXP Semiconductors

Philips Semiconductors
TEA5764HN_2
Product data sheet
8.19.2.1 RDS/RBDS decoder
8.19.2 RDS data and clock direct
8.20 Audio pause detector
8.21 Auto search and Preset mode
The RDS demodulator retrieves the RDS data and clock signals, this data can be put
directly onto pins VAFL and VAFR by setting bit RDSCDA to logic 1.
The RDS decoder provides block synchronization, error correction and flywheel function
for reliable extraction of RDS or RBDS block data. Different modes of operation can be
selected to fit different application requirements. Availability of new data is signalled by bit
DAVFLG and output pin INTX which generates an interrupt. Up to two blocks of data and
status information are available via the I
The behavior of the DAVFLG is described in
The audio pause detector monitors the audio modulation for pauses and responds to low
levels. The modulation threshold can be adjusted in 4 steps of 4 dB by control bits PL[1:0].
The minimum time for detecting a pause can be adjusted by control bits PT[1:0] as shown
in
is generated; see
In Search mode the TEA5764HN can search channels automatically; see
Table
38. When a pause occurs, flag PDFLAG is set to logic 1 and a hardware interrupt
Section
Rev. 02 — 9 August 2005
9.1.4.6.
2
C-bus in a single transmission.
Section
10.
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
TEA5764HN
FM radio + RDS
Figure
3.
11 of 64