TDF8541JSSLASHN2 datasheet(28/54 Pages) NXP

28 / 54 page

TDF8541

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Product data sheet

Rev. 3 — 13 December 2011

28 of 54

NXP Semiconductors

TDF8541

I2C-bus controlled 4

 45 W power amplifier

Remark: Data bits are only reset (cleared after read) after reading 5 data bytes.

Table 14.

Data byte DB2

Bit

Description

POR and amplifier status

0 = POR disabled; amplifier enabled

1 = POR has occurred; amplifier disabled

speaker fault channel 4

0 = no speaker fault

1 = speaker fault, channel 4

D5 and D4

channel 4 DC-load or AC-load detection

if bit IB4[D4] = 1, AC-load detection is enabled, bit D5 does not care, bit D4 has

the following meaning:

0 = no AC-load

1 = AC-load detected

if bit IB4[D4] = 0, AC-load detection is disabled, bits D5 and D4 are available for

DC-load detection

00 = normal load

01 = line driver load

10 = open load

11 = not valid

channel 4 shorted load

0 = no shorted load

1 = shorted load

channel 4 output offset

0 = no output offset

1 = output offset

channel 4 short to VP

0 = no short to VP

1 = short to VP

channel 4 short to ground

0 = no short to ground

1 = short to ground

Table 15.

Data byte DB3

Bit

Description

maximum temperature protection

0 = no protection

1 = maximum temperature protection

speaker fault channel 1

0 = no speaker fault, channel 1

1 = speaker fault, channel 1

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