參數(shù)資料
型號(hào): ADAU1781BCPZ-RL7
廠商: Analog Devices Inc
文件頁數(shù): 60/92頁
文件大?。?/td> 0K
描述: IC SIGMADSP CODEC LN 32LFCSP
標(biāo)準(zhǔn)包裝: 1,500
系列: SigmaDSP®
類型: 立體聲音頻
數(shù)據(jù)接口: I²C,串行,SPI?
分辨率(位): 24 b
ADC / DAC 數(shù)量: 2 / 2
三角積分調(diào)變:
S/N 比,標(biāo)準(zhǔn) ADC / DAC (db): 100 / 105(差分),100 / 103(單端)
動(dòng)態(tài)范圍,標(biāo)準(zhǔn) ADC / DAC (db): 99.2 / 105(差分),99.2 / 103(單端)
電壓 - 電源,模擬: 1.8 V ~ 3.65 V
電壓 - 電源,數(shù)字: 1.63 V ~ 3.65 V
工作溫度: -25°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 32-VFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 32-LFCSP-VQ
包裝: 帶卷 (TR)
ADAU1781
Rev. B| Page 63 of 92
AUDIO CONVERTER CONFIGURATION
Register 16407 (0x4017), Converter Control 0
Bits[6:5], On-Chip DAC Data Selection in TDM Mode
These bits set the position of the DAC input channels on a TDM
stream. In TDM 4 mode, valid settings are first pair or second
pair. In TDM 8 mode, valid settings are first pair, second pair,
third pair, or fourth pair. These bits should be set in conjunction
with Register 16406 (0x4016), Serial Port Control 1, Bit 3, DAC
channel position in TDM, to select where the data should appear
in the TDM stream.
Figure 70, Figure 71, and Figure 72 show examples of different
TDM settings.
Bit 4, DAC Oversampling Ratio
This bit sets the oversampling ratio of the DAC relative to the
audio sample rate. The higher rate yields slightly better audio
quality but increases power consumption.
Bit 3, ADC Oversampling Ratio
This bit sets the oversampling ratio of the ADC relative to the
audio sample rate. The higher rate yields slightly better audio
quality but increases power consumption.
Bits[2:0], Converter Sampling Rate
These bits set the sampling rate of the audio ADCs and DACs
relative to the SigmaDSP core’s audio sample rate.
Table 48. Converter Control 0 Register
Bits
Description
Default
7
Reserved
[6:5]
On-chip DAC data selection in TDM mode
00
00: first pair
01: second pair
10: third pair
11: fourth pair
4
DAC oversampling ratio
0
0: 128
1: 64
3
ADC oversampling ratio
0
0: 128
1: 64
[2:0]
Converter sampling rate; the numbers in parentheses are example values for a base sample rate of 48 kHz
000
000: f
S (48 kHz)
001: f
S/6 (8 kHz)
010: f
S/4 (12 kHz)
011: f
S/3 (16 kHz)
100: f
S/2 (24 kHz)
101: f
S/1.5 (32 kHz)
110: f
S × 2 (96 kHz)
111: reserved
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