參數(shù)資料
型號: EVAL-ADAU1781Z
廠商: Analog Devices Inc
文件頁數(shù): 69/92頁
文件大?。?/td> 0K
描述: BOARD EVAL FOR ADAU1781
標(biāo)準(zhǔn)包裝: 1
系列: SigmaDSP®
主要目的: 音頻編解碼器
嵌入式: 是,DSP
已用 IC / 零件: ADAU1781
主要屬性: 立體聲,24 位,8 ~ 96 kHz 采樣率,GUI 工具
次要屬性: *
已供物品: *
ADAU1781
Rev. B| Page 71 of 92
Register 16423 (0x4027), Playback Speaker Output
Control
Bits[7:6], Speaker Output Gain Control
These bits control the gain of the speaker output. In general, this
parameter should be tuned at a system level, set once during system
initialization and not altered during operation of the system.
Bit 0, Speaker Output Enable
This bit enables the speaker output. It initiates the speaker power-
up and power-down sequences shown in Figure 35 and Figure 36.
Register 16424 (0x4028), Beep Zero-Crossing Detector
Control
Bits[4:3], Detector Timeout
The timeout detector waits the specified amount of time for a
beep zero crossing before forcing the mute or unmute in the
playback path beep gains (that is, the left playback beep gain,
right playback beep gain, and mono playback beep gain).
Bit 0, Zero-Crossing Detector Enable
This bit enables the zero-crossing detector. Disabling the beep
zero-crossing detector may cause clicks and pops on the output
when using the beep path.
Table 59. Playback Speaker Output Control Register
Bits
Description
Default
[7:6]
Speaker output gain control
00
00: 0 dB
01: 2 dB
10: 4 dB
11: 6 dB
[5:1]
Reserved
0
Speaker output enable
0
0: disabled
1: enabled
Table 60. Beep Zero-Crossing Detector Control Register
Bits
Description
Default
[7:5]
Reserved
[4:3]
Detector timeout
11
00: 20 ms
01: 10 ms
10: 5 ms
11: 2.5 ms
[2:1]
Reserved
0
Zero-crossing detector enable
1
0: disabled
1: enabled
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