tda1566th NXP Semiconductors, tda1566th Datasheet - Page 16

• 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
6.4.2 Instruction bytes
6.4.3 Data bytes
If R/W bit = 0, the TDA1566 expects 3 instruction bytes; IB1, IB2 and IB3. After a
power-on reset, all instruction bits are set to zero. In 1
channel 1 are used. The instruction bits labelled ‘reserved for test’ should be set to zero.
Table 18.
If R/W = 1, the TDA1566 will send 3 data bytes to the microprocessor: DB1, DB2, and
DB3. All short diagnostic and offset detect bits are latched. All bits are reset after a read
operation except DB1[D7], DB2[D7], DB1[D4], DB2[D4], DB1[D5] and DB2[D5]. DB1[D2]
and DB2[D2] are set after a read operation, see
reset when IB1[D2] is LOW. In 1
The content of the bits ‘reserved for test’ should be ignored.
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Instruction byte IB1
0
1
0
1
0
1
0
1
reserved for test
0
1
0
1
0
1
Instruction bytes
slow start enable
slow start disable
channel 1 no clip
detect on DIAG
channel 1 clip detect
on DIAG
channel 2 no clip
detect on DIAG
channel 2 clip detect
on DIAG
no temperature pre-
warning on DIAG
temperature pre-
warning on DIAG
AC load detection
disabled; detection
slope counter reset
AC load detection
enabled
DC load detection
disabled
DC load detection
enabled
TDA1566 in standby
TDA1566 in mute or
operating (see
IB2[D0])
Rev. 02 — 20 August 2007
I
2
C-bus controlled dual channel/single channel amplifier
mode the diagnostic information will be shown in DB1.
Instruction byte IB2
0
1
reserved for test
reserved for test
0
1
reserved for test
0
1
0
1
0
1
clip detect level on
3 %
clip detect level on
7 %
speaker protection or
short on DIAG
no speaker protection
or short on DIAG
slow mute (20 ms)
fast mute (0.1 ms)
offset fault on DIAG
no set fault on DIAG
channel 1 and
channel 2 operating
channel 1 and
channel 2 muted
Section
6.3.5. DB1[D7] and DB2[D7] are
mode the instruction bits of
Instruction byte IB3
reserved for test
0
1
0
1
0
1
0
1
0
1
0
1
reserved for test
channel 1 26 dB gain
channel 1 16 dB gain
channel 2 26 dB gain
channel 2 16 dB gain
temperature pre-
warning on 145 C
temperature pre-
warning on 122 C
channel 1 enabled
channel 1 disabled
channel 2 enabled
channel 2 disabled
balanced input
unbalanced input
TDA1566
© NXP B.V. 2007. All rights reserved.
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