TFA9812HN PHILIPS [NXP Semiconductors], TFA9812HN Datasheet - Page 27

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TFA9812HN

Manufacturer Part Number
TFA9812HN
Description
BTL stereo Class-D audio amplifier with I2S input
Manufacturer
PHILIPS [NXP Semiconductors]
Datasheet
NXP Semiconductors
9. I
TFA9812_2
Preliminary data sheet
2
C bus interface and register settings
9.1 I
9.2 I
Table 21.
[1]
[2]
The TFA9812 supports the 400 kHz I
can be used to control the TFA9812 and to exchange data with it when in I
mode, see
The TFA9812 can operate in I
The serial hardware interface involves the pins of the TFA9812 as described in
Table 22.
Voltage values applied to the I
Table
Table 23.
Table 24
contains the device address as well as the bit indicator read/write_not R/!W. The TFA9812
supports four different addresses, each of which can be configured using the pins
ADSEL1/PLIM1 and ADSEL2/PLIM2, see
Table 24.
Protections
Symbol Conditions
OFP
IBP
Pin name
SCL/SFOR
SDA/MS
ADSEL2/PLIM2
ADSEL1/PLIM1
Logic value
0
1
(MSB)
1
2
2
C bus interface
C bus TFA9812 device addresses
See,
Window Protection is only checked at power-up.
23.
Section
shows the register address options for the TFA9812 as part of the 8-bit byte that
PLL frequency > 140 MHz Floating
BCK/WS is not 32
48 2 or 64 2
Overview protections
I
I
I
Section
2
2
2
Bit
1
C pins in I
C pin voltages in I
C bus device address
9.5.10.
Description
I
I
I
I
Voltage A2/A1
< V
> V
2
2
2
2
8.2.1.
C bus clock input
C bus data input and output
C bus device address bit A2
C bus device address bit A1
IL
IH
Rev. 02 — 22 January 2009
2
0
C control mode
2,
2
2
2
C control mode
C slave mode only as slave receiver or a slave transmitter.
C bus device address pins are interpreted as described in
…continued
1
DIAG
pin
Floating
2
BTL stereo Class-D audio amplifier with I
C bus microcontroller interface mode standard. This
Table
I
flag
OFP
-
0
2
C
[1]
22.
Output
Floating
Floating
A2
Recovering
Restart (fault to operating
when
PLL frequency < 140 MHz)
Restart (fault to operating
when BCK/WS is 32
48 2 or 64 2)
A1
© NXP B.V. 2009. All rights reserved.
TFA9812
2
C control
R/!W
Table
(LSB)
2
S input
27 of 66
2,
22.

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