TDF8555J NXP Semiconductors, TDF8555J Datasheet - Page 30

• Manufacturer Part Number: TDF8555J
• Description: The TDF8555J is one of a new generation of complementary quad Bridge-Tied Load(BTL) audio power amplifiers with full I²C-bus controlled diagnostics, multiple voltageregulator and two power switches intended for automotive applications
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TDF8555J
Product data sheet
9.2 I
Table 16.
If address byte bit R/W = 1, the TDF8555J sends 4 data bytes to the microprocessor DB1,
DB2, DB3 and DB4; see
All bits are latched.
All data bits reset only after reading all 4 data bytes (clear after read), except D4 and D5.
D2 is set after a read operation, see
For explanation of AC and DC load detection bits, see
Table 17.
Bit
Bit
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
2
C-bus data bytes
Instruction byte IB5 bit description
Data byte DB1 bit description
Symbol
D7
D6
D5
D4
D3
D2
D1
D0
Symbol
D7
D6
D5
D4
D3
D2
D1
D0
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 15 September 2011
Table 17
4 45 W power amplifier with multiple voltage regulator
Description
-
-
-
-
diagnostics information in bits DBx[D3]
-
-
-
Description
amplifier thermal protection pre-warning
amplifier maximum thermal protection
channel 4 load detection results; see
channel 4 diagnostic results; see
channel 4 output offset
channel 4 V
channel 4 short-circuit to ground detection
0 = short load diagnostic
1 = speaker fault diagnostic
0 = no warning
1 = junction temperature above pre-warning level
0 = no warning
1 = amplifier temperature above pre-warning level
0 = no output offset
1 = output offset
0 = no short-circuit to V
1 = short-circuit to V
0 = no short-circuit to ground
1 = short-circuit to ground
to
Section
Table
P
short-circuit detection
22.
7.5.2.
P
P
Section
Table 19
7.5.3.
Table 18
TDF8555J
© NXP B.V. 2011. All rights reserved.
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