TDA8415 Datasheet, PDF (9/19 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
TDA8415
Reading the TDA8415
Reading the TDA8415 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 and 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
PONRES
= power on reset
1
= power on reset active after switching on or power breakdown
0
= after reading the status register
ST
= stereo transmission
DS
= 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
1
1 not possible
May 1989
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