TDA8417 Datasheet, PDF (10/20 Pages) NXP Semiconductors – TV and VTR stereo/dual sound processor with integrated filters and I2C-bus control

Philips Semiconductors
TV and VTR stereo/dual sound processor
with integrated filters and I²C-bus control
Preliminary specification
TDA8417
Reading the TDA8417
Reading the TDA8417 means reading the status register and the data stream will have the format as illustrated in
Fig.5 below.
Where:
S = start bit
A = acknowledge bit
P = stop bit
Fig.5 Read format.
The second byte, the contents of the status register, is defined by Table 2.
Table 2 Status register
D7
D6
D5
D4
D3
D2
D1
D0
PONRES
ST
DS
0
0
0
0
0
Where:
PONRES
ST
DS
= power on reset
1 = power on reset active after switching on or power breakdown
0 = after reading the status register
= stereo transmission
= dual sound transmission
The truth table for the ST and DS bits is provided by Table 3.
Table 3 Truth table for ST and DS bits
ST
DS
DEFINITION
0
0
mono transmission
0
1
dual sound transmission
1
0
stereo transmission
September 1989
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