TDA8415 Datasheet, PDF (10/19 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
Writing to the TDA8415
Writing to the TDA8415 means, writing to either the switch register or the mute and port control register. Which one is to
be addressed is defined by the subaddress (the second byte) as illustrated by Fig.6 below. The third byte contains the
information to be stored in the specified register.
Where S = start bit; A = acknowledge bit and P = stop bit
Fig.6 Write format.
Table 4 defines the contents of the mute and port control register.
Table 4 Mute and port control register
D7
D6 D5
D4
CR3
D3 D2 D1 D0
CR21 CR20 CR11 CR10
definition
X XX
0
0
control port C1 = LOW
X XX
0
1
control port C1 = HIGH
X XX
1
X
control port C1 = high impedance
X XX
0
0
control port C2 = LOW
X XX
0
1
control port C2 = HIGH
X XX
1
X
control port C2 = high impedance
X XX0
mute is active when pin 18 is LOW (default)
X XX1
mute is active when pin 18 is HIGH
Note
1. Where: X = don’t care.
May 1989
10