參數(shù)資料
型號(hào)： TPA3200D1DCPR
廠商： TEXAS INSTRUMENTS INC
元件分類： 音頻／視頻放大
英文描述： 12.8 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO44
封裝： GREEN, PLASTIC, HTSSOP-44
文件頁(yè)數(shù)： 8/29頁(yè)
文件大小： 1083K
代理商： TPA3200D1DCPR
www.ti.com
REGISTER CONTROL
OVERSAMPLING RATE CONTROL
VCOM OUTPUT
TPA3200D1
SLOS442A – MAY 2005 – REVISED JULY 2005
The digital functions of the TPA3200D1 are controlled by 4 terminals. Table 2 shows selectable data formats,
Table 3 shows de-emphasis control, Table 4 shows mute control, and Table 5 shows channel-output select.
Table 2. Data Format Select
FMT (PIN 43)
DATA FORMAT
LOW
16- to 24-bit, I2S format
HIGH
16-bit right-justified
Table 3. De-Emphasis Control
DEMP (PIN 41 )
DE-EMPHASIS FUNCTION
LOW
44.1 kHz de-emphasis OFF
HIGH
44.1 kHz de-emphasis ON
Table 4. Mute Control
MUTE (PIN 42 )
MUTE
LOW
Mute OFF
HIGH
Mute ON
Table 5. Channel Output Select
LR_SEL (PIN 7 )
ACTIVE CHANNEL(1)
LOW
Right
HIGH
Left
(1)
A digital data stream consists of two channels of data. In an I2S or
right-justified data stream, the left-channel data precedes the
right-channel data (See Figure 20). The LR_SEL input selects the
channel to send to the mono output.
The TPA3200D1 automatically controls the oversampling rate of the delta-sigma D/A converters with the system
clock rate. The oversampling rate is set to 64× oversampling with every system clock and sampling frequency.
One unbuffered common-mode voltage output pin, VCOM (pin 10) is brought out for decoupling purposes. This
pin is nominally biased to a dc voltage level equal to 0.5 × VDD. This pin cannot be used to bias external circuits.
16
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