參數(shù)資料
型號： TFA9812HN/N1,557
廠商： NXP SEMICONDUCTORS
元件分類： 音頻／視頻放大
英文描述： 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC48
封裝： 7 X 7 MM, 0.85 MM HEIGHT, PLASTIC, MO-220, SOT619-8, HVQFN-48
文件頁數(shù)： 3/66頁
文件大小： 386K
代理商： TFA9812HN/N1,557
TFA9812_2
NXP B.V. 2009. All rights reserved.
Preliminary data sheet
Rev. 02 — 22 January 2009
11 of 66
NXP Semiconductors
TFA9812
BTL stereo Class-D audio amplier with I2S input
[1]
Under these conditions the mode is enabled by the appropriate I2C setting.
In I2S slave mode selection between BCK and MCLK clock modes is automatic.
MCLK clock mode is given higher priority than BCK. If the MCLK clock is judged valid by
the protection circuit then MCLK clock mode is enabled. BCK clock mode is enabled when
the MCLK clock is invalid (e.g. not available) and the BCK clock is judged valid by the
protection circuit (see Section 8.7.11).
Table 7 shows the supported crystal frequencies in I2S master mode.
Table 8 shows the supported MCLK frequencies in MCLK mode (I2S slave mode).
Table 9 shows the supported BCK frequencies in BCK mode (I2S slave mode).
Table 6.
I2S master/slave mode selection
Pin value
Clock mode
I2S mode
CSEL
SDA/MS
0
legacy
slave
0
1
legacy
master
1-
I2C
slave or master[1]
Table 7.
Valid crystal frequencies in I2S master mode
Control mode
fs (kHz)
Crystal frequency (MHz)
I2C
8, 16, 32, 64, 128
8.192
11.025, 22.05, 44.1, 88.2,
176.4
11.2896
12, 24, 48, 96, 192
12.288
Legacy
32
8.192
44.1
11.2896
48
12.288
Table 8.
Valid MCLK frequencies in I2S slave mode
Control mode
fs (kHz)
MLCK frequency (MHz)
I2C
8, 16, 32, 64, 128
8.192
12.288
32
18.432 (576 fs)
11.025, 22.05, 44.1, 88.2,
176.4
11.2896
16.9344
44.1
25.4016 (576 fs)
12, 24, 48, 96, 192
12.288
18.432
48
27.648 (576 fs)
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