参数资料
型号: TFA9812HN
厂商: NXP SEMICONDUCTORS
元件分类: 音频/视频放大
英文描述: 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC48
封装: 7 X 7 MM, 0.85 MM HEIGHT, PLASTIC, MO-220, SOT619-8, HVQFN-48
文件页数: 22/66页
文件大小: 386K
代理商: TFA9812HN
TFA9812_2
NXP B.V. 2009. All rights reserved.
Preliminary data sheet
Rev. 02 — 22 January 2009
29 of 66
NXP Semiconductors
TFA9812
BTL stereo Class-D audio amplier with I2S input
9. The TFA9812 sends the rst byte. This is the most signicant byte of the register.
10. The microcontroller asserts an acknowledge.
11. The TFA9812 sends the second byte.
12. The microcontroller asserts either an acknowledge or a negative acknowledge (NA).
If the microcontroller has asserted an acknowledge, the targeted register address
is auto-increased by the TFA9812 and steps 9 to 12 are repeated.
If the microcontroller has asserted a negative acknowledge, the TFA9812 frees the
I2C bus and the microcontroller generates a stop condition (P).
9.5 Top-level register map
Table 27 describes the assignments of the various register addresses to the functional
control or status areas at top level. There are 47 control registers and 2 status registers.
The following subsections give the individual register interpretations and bit level details.
Table 26.
I2C read cycle
Start TFA9812
address
R/!W
First
register
address
TFA9812
address
R/!W
MS
data
byte
LS
data
byte
More
data...
More
data...
Stop
S
11010A2A1 0
A
ADDR
A
Sr
11010A2A1 1
A
MS1
A
LS1
<A>
<....>
NA
P
Table 27.
Top-level register map
Register
address
(hex)
Default (hex)
Access
See:
Description
0x00
0x0020;
Legacy_mode
R/W
Interpolator settings and soft mute
0x0021; I2C_mode
0x01
0x0000
R/W
Volume control
0x02
0x0006
R/W
Format digital in
0x03
0x0002
R/W
Equalizer conguration
0x04
0x0058
R/W
Equalizer_A1 word_1; word_1 for
equalizer band A1, see Section 8.5.1.2
0x05
0x4F40
R/W
Equalizer_A1 word_2; see
0x06
0x0058
R/W
Equalizer_B1 word_1
0x07
0x4F40
R/W
Equalizer_B1 word_2
0x08
0x0A63
R/W
Equalizer_C1 word_1
0x09
0x4240
R/W
Equalizer_C1 word_2
0x0A
0x0A63
R/W
Equalizer_D1 word_1
0x0B
0x4240
R/W
Equalizer_D1 word_2
0x0C
0x00B7
R/W
Equalizer_A2 word_1
0x0D
0x4E40
R/W
Equalizer_A2 word_2
0x0E
0x00B7
R/W
Equalizer_B2 word_1
0x0F
0x4E40
R/W
Equalizer_B2 word_2
0x10
0x14A2
R/W
Equalizer_C2 word_1
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