tda8594sd-n1 NXP Semiconductors, tda8594sd-n1 Datasheet - Page 18
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tda8594sd-n1
Manufacturer Part Number
tda8594sd-n1
Description
Tda8594 I?c-bus Controlled 4 X 50 W Power Amplifier
Manufacturer
NXP Semiconductors
Datasheet
1.TDA8594SD-N1.pdf
(48 pages)
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NXP Semiconductors
TDA8594_2
Product data sheet
7.17 I
The interpretation of line driver and normal mode DC load bit settings for AC load
detection is shown in
Table 6.
When bit IB1[D2] = 1, the AC load detection is enabled. The AC load detection can only
be performed after the amplifier has completed its start-up cycle and will not conflict with
the DC load detection.
The diagnostic information of the amplifier can be read via the I
are set on a failure and will be reset with the I
failure is removed, the microprocessor will know what was wrong by reading the I
The consequence of this procedure is that old information is read during the I
readout. Most actual information will be gathered after two successive read commands.
The DIAG pin will give actual diagnostic information (when selected). When a failure is
removed, the DIAG pin will be released instantly, independently of the I
DBx[D4]
0
1
2
Fig 13. AC load impedance as a function of peak output voltage
C-bus diagnostic readout
(1) I
(2) I
|Z
th(load)
( )
th(o)det(load)AC
th(o)det(load)AC
20
16
12
8
4
0
AC load detection
|
0
< 230 mA (no load detection level)
> 460 mA (load detection level)
Rev. 02 — 11 December 2007
Table
1
6.
2
I
2
C-bus controlled 4
Meaning (when IB1[D2] = 1)
no AC load detected
AC load detected
2
C-bus read command. Even when the
(1)
(2)
3
2
4
C-bus. The I
50 W power amplifier
V
oM
TDA8594
001aad177
2
© NXP B.V. 2007. All rights reserved.
(V)
C-bus latches.
2
5
2
C-bus bits
C-bus
2
C-bus.
18 of 48
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