tda1566th NXP Semiconductors, tda1566th Datasheet - Page 17

• Manufacturer Part Number: tda1566th
• Description: Tda1566 I2c-bus Controlled Dual Channel 46 W/2 Ohm, Single Channel 92 W/1 Ohm Amplifier With Load Diagnostic Features
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TDA1566_2
Product data sheet
6.5.1 Start-up and shutdown
6.5 Timing waveforms
Table 19.
To prevent switch-on or switch-off pop noise, the capacitor on the SVR pin C
for smooth start-up and shutdown. During start-up and shutdown the output voltage tracks
the SVR voltage. With IB1[D7] = 0 the time constant made with the SVR capacitor can be
increased to reduce turn on transients at the load. Consequently the start-up time
t
Note that in non-I
Increasing C
capacitor value will also result in a longer DC load detection cycle.
Bit
D7
D6
D5
D4
D3
D2
D1
D0
d(mute_off)
Data byte DB1 channel 1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
increases with approximately 420 ms (V
Data bytes
SVR
no AC load detected
AC load detected
no speaker fault
speaker fault
amplifier load (D4 = 0) 0
not valid (D4 = 1)
line driver load
(D4 = 0)
open load (D4 = 1)
amplifier load (D5 = 0) 0
line driver load
(D5 = 1)
not valid (D5 = 0)
open load (D5 = 1)
no shorted load
shorted load
no output offset
output offset detected 1
no short to V
short to V
no short to ground
short to ground
results in a longer start-up and shutdown time. Note that a larger SVR
2
C-bus mode the IB1[D7] = 0 setting will be used.
Rev. 02 — 20 August 2007
P
P
I
2
C-bus controlled dual channel/single channel amplifier
Data byte DB2 channel 2
0
1
0
1
1
1
0
1
0
0
1
0
1
no AC load detected
AC load detected
no speaker fault
speaker fault
amplifier load (D4 = 0) 0
not valid (D4 = 1)
line driver load
(D4 = 0)
open load (D4 = 1)
amplifier load (D5 = 0) 0
line driver load
(D5 = 1)
not valid (D5 = 0)
open load (D5 = 1)
no shorted load
shorted load
no output offset
output offset detected
no short to V
short to V
no short to ground
short to ground
P
P
= 14.4 V, C
P
SVR
Data byte DB3 both
channels
0
1
0
1
1
1
0
1
reserved for test
reserved for test
reserved for test
= 22 F, T
TDA1566 in mute or
operating
(IB1[D0] = 1)
power-on reset has
occurred or TDA1566
in standby
(IB1[D0] = 0)
below maximum
temperature
maximum
temperature
protection activated
no temperature
warning
temperature
pre-warning active
SVR below V
SVR above V
invalid DC load data
valid DC load data
TDA1566
© NXP B.V. 2007. All rights reserved.
SVR
amb
= 25 C).
is used
P
P
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