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參數(shù)資料
| 型號： | TDA1388 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Bitstream continuous calibration filter-DAC for CD-ROM audio applications |
| 中文描述： | 流連續(xù)的校準(zhǔn)器，數(shù)模轉(zhuǎn)換器的CD - ROM音頻應(yīng)用 |
| 文件頁數(shù)： | 11/24頁 |
| 文件大?。?/td> | 138K |
| 代理商： | TDA1388 |
1996 Jul 17
11
Philips Semiconductors
Objective specification
Bitstream continuous calibration filter-DAC
for CD-ROM audio applications
TDA1388
TREBLE: a 5-bit value to program the treble setting. The used set depends on the MODE bits.
Table 14
Treble settings
TR4
TR3
TR2
TR1
TR0
TREBLE
FLAT SET (dB)
MIN SET (dB)
MAX SET (dB)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
:
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
:
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
:
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
:
1
0
1
0
1
0
1
1
0
1
0
1
0
1
0
1
0
:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
:
0
0
0
2
2
4
4
6
6
6
6
6
6
6
6
6
6
:
6
0
0
2
2
4
4
6
6
6
6
6
6
6
6
6
6
:
6
Flat/min/max setting selection
In the TDA1388 has three setting for the digital sound
features bass boost and treble. The possible settings are
called ‘flat’, ‘min’ and ‘max’. The flat setting has no
influence on the audio signal, the minimum setting has a
small influence on the audio signal and the maximum
setting has a large influence on the audio signal. In the
static-pin mode, the flat setting is used for the bass boost
and treble filters. In the microcontroller mode, all three
settings can by controlled by a register.
Channel manipulation modes
In the TDA1388 there is a channel manipulation function
implemented. This function has a fixed value in the
static-pin mode, the left signal on the left channel and the
right signal on the right channel. In the microcontroller
mode several option are possible.
The different modes are as follows:
Normal stereo output
Left/right reverse output
Mono left/right output:
1
2
(L + R)
Output muting with soft mute.
De-emphasis
De-emphasis is controlled by an external pin in the
static-pin mode and by a register in the microcontroller
mode.The digital de-emphasis filter is dimensioned to
produce the de-emphasis frequency characteristics for the
sample rate 44.1 kHz. With its 18-bit dynamic range, the
digital de-emphasis filter of the TDA1388 is a convenient
and component saving alternative to analog de-emphasis.
De-emphasis is synchronized to the sample clock, so that
operation always takes place on complete samples.
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