TDA8594 NXP Semiconductors, TDA8594 Datasheet - Page 20

• Manufacturer Part Number: TDA8594
• Description: The TDA8594 is a complementary quad Bridge Tied Load (BTL) audio power amplifiermade in BCDMOS technology
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TDA8594_2
Product data sheet
Fig 16. I
SDA
SDA
SCL
SCL
2
C-bus read and write modes
I
I
R/W
2
2
NA
C-BUS WRITE
C-BUS READ
S
P
A
S
S
: generated by master (microcontroller)
: generated by slave
: START
: STOP
: acknowledge
: not acknowledge
: read / write
8.1 Instruction bytes
MSB
MSB
1
1
I
Legacy mode:
Table 8.
Bit
D7
D6
D5
2
MSB
MSB
C-bus mode:
•
•
•
ADDRESS
ADDRESS
If bit R/W = 0, the TDA8594 expects three instruction bytes; IB1, IB2 and IB3
After a power-on reset, all instruction bits are set to zero.
All bits equal to zero define the setting, with the exception of bit IB1[D0] which is
ignored; see
2
2
1
1
Instruction byte IB1
Description
don’t care
channel 3 clip information on DIAG or STB pin
channel 1 clip information on DIAG or STB pin
LSB + 1
LSB + 1
0 = clip information on DIAG pin
1 = clip information on STB pin
0 = clip information on DIAG pin
1 = clip information on STB pin
Table
7
7
Rev. 02 — 11 December 2007
8.
W
R
8
8
ACK
ACK
A
A
9
9
MSB
MSB
1
1
To stop the transfer, the last byte must not be acknowledged
MSB
MSB
I
2
C-bus controlled 4
2
2
WRITE DATA
1
1
READ DATA
To stop the transfer, after the last acknowledge (A)
and a STOP condition (P) must be generated
a STOP condition (P) must be generated
LSB + 1
LSB + 1
7
7
LSB
LSB
8
8
50 W power amplifier
ACK
ACK
NA
TDA8594
A
© NXP B.V. 2007. All rights reserved.
9
9
001aac649
P
P
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