参数资料
型号: ADAV4622BSTZ
厂商: Analog Devices Inc
文件页数: 17/28页
文件大小: 0K
描述: IC AUD PRO ATV/SIF DECODE 80LQFP
标准包装: 1
系列: SigmaDSP®
类型: 解调器
应用: 家用音频
安装类型: 表面贴装
封装/外壳: 80-LQFP
供应商设备封装: 80-LQFP(14x14)
包装: 托盘
配用: EVAL-ADAV4622EBZ-ND - BOARD EVAL ADAV4622
ADAV4622
Rev. B | Page 24 of 2
8
LRCLK
BCLK
SDO0
MSB
LEFT CHANNEL
LSB
MSB
RIGHT CHANNEL
LSB
1 /FS
0
7068-
022
Figure 26. I2S Mode
LRCLK
BCLK
SDO0
LEFT CHANNEL
MSB
LSB
MSB
RIGHT CHANNEL
LSB
1 /FS
070
68-
02
3
Figure 27. Left-Justified Mode
LRCLK
BCLK
SDO0
LEFT CHANNEL
MSB
LSB
MSB
RIGHT CHANNEL
LSB
1 /FS
07
068-
024
Figure 28. Right-Justified Mode
PWM OUTPUTS
In the ADAV4622, the main outputs are available as four PWM
output channels, which are suitable for driving Class-D amplifiers.
PWM_Ready is a status pin used to signify that the ADAV4622
PWM outputs are in a valid state. During PWM power-up and
power-down, this pin remains low to signify that the outputs
are not in a valid state. The output power stage should remain
muted until this pin goes high. This functionality helps to
eliminate pop/click and other unwanted noise on the outputs.
PWM1A
PWM1B
PWM2A
PWM2B
PWM3A
PWM3B
PWM
MODULATOR
PWM
MODULATOR
PWM
MODULATOR
+
+
+
PWM4A
PWM_READY
PWM4B
PWM
MODULATOR
+
07
06
8
-02
6
Figure 29. PWM Output Section
Each set of PWM outputs is a complementary output. The
modulation frequency is 384 kHz, and the full-scale duty cycle
has a ratio of 97:3.
Full details on the use of the PWM outputs are available upon
request. Contact a local Analog Devices sales representative for
more details.
HEADPHONE OUTPUTS
There are two stereo headphone amplifier outputs capable
of driving 32 Ω loads at 1 V rms. HPOUT1 is shared with
AUXOUT4, and HPOUT2 is shared with AUXOUT2, as shown
AUXOUT2R
AUXOUT2L
PA
HPOUT2L
HPOUT2R
DAC
07
06
8-
02
7
AUXOUT4R
AUXOUT4L
PA
HPOUT1L
HPOUT1R
DAC
Figure 30. Headphone Outputs Section
I2S DIGITAL AUDIO OUTPUTS
One I2S output, SDO0, uses the same serial clocks as the serial
inputs, which are BCLK1 and LRCLK1 by default. If an addi-
tional digital output is required, an additional pin can be
reconfigured as a serial digital output, as shown in Figure 31.
SDO0
R
L
R
L
S/PDIF
OUTPUT
SPDIF_OUT (SDO1)
I2S OUTPUT
INTERFACE
BCLK1
LRCLK1
0
7068-
028
Figure 31. I2S Digital Outputs
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