參數(shù)資料
型號: TAS3004PFBR
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP48
封裝: GREEN, PLASTIC, TQFP-48
文件頁數(shù): 26/84頁
文件大小: 671K
代理商: TAS3004PFBR
4–3
4.6
Bass Control
The bass gain level can be adjusted within the range of 15 dB to –15 dB with 0.5-dB step resolution. The level changes
are accomplished by downloading bass codes (shown in Appendix A) into the bass frequency control register.
Alternately, a limited range of bass control is available by asserting the GPI terminals.
Bass control is a shelf filter with a corner frequency of 250 Hz at a 48-kHz sample rate.
The gain values for bass control can be found in Section A.4.
4.7
De-Emphasis (DM)
De-emphasis is implemented in the DAC and is software controlled. De-emphasis is valid at 44.1 kHz and 48 kHz.
To enable de-emphasis, values are written into the analog control register via the I2C command. See Section 4.8 for
analog control register operation.
Figure 4–2 illustrates the frequency response of the de-emphasis mode.
Response (dB)
3.18
(50
s)
10.6
(15
s)
Frequency (kHz)
De-Emphasis
Figure 4–2. De-Emphasis Mode Frequency Response
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