adau1781bcpz-rl Analog Devices, Inc., adau1781bcpz-rl Datasheet - Page 71

• Manufacturer Part Number: adau1781bcpz-rl
• Description: Low Noise Stereo Codec With Sigmadsp Processing Core
• Manufacturer: Analog Devices, Inc.

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.
Table 59. Playback Speaker Output Control Register
Bits
[7:6]
[5:1]
0
Table 60. Beep Zero-Crossing Detector Control Register
Bits
[7:5]
[4:3]
[2:1]
0
Description
Reserved
Detector timeout
00: 20 ms
01: 10 ms
10: 5 ms
11: 2.5 ms
Reserved
Zero-crossing detector enable
0: disabled
1: enabled
Description
Speaker output gain control
00: 0 dB
01: 2 dB
10: 4 dB
11: 6 dB
Reserved
Speaker output enable
0: disabled
1: enabled
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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.
Default
00
0
Default
11
1
ADAU1781