adau1381 Analog Devices, Inc., adau1381 Datasheet - Page 76

• Manufacturer Part Number: adau1381
• Description: Low-noise Stereo Codec With Enhanced Recording And Playback Processing
• Manufacturer: Analog Devices, Inc.

ADAU1381
Register 16434 (0x4032), Dejitter Control
Bits[7:0], Dejitter Window Size
The dejitter control register not only allows the size of the
dejitter window to be set, but also allows all dejitter circuits in
the device to be activated or bypassed. Dejitter circuits protect
against duplicate samples or skipped samples due to jitter from
the serial ports in slave mode. Disabling and reenabling certain
subsystems in the device—that is, the ADCs, serial ports, sound
engine/DSP core, and DACs—during operation can cause the
associated dejitter circuits to fail. As a result, audio data fails to
be output to the next subsystem in the device.
Table 64. Dejitter Control Register
Bits
[7:0]
Description
Dejitter window size
00000000: 0 core clock cycles
00000101: 5 core clock cycles
Rev. A | Page 76 of 84
When the serial ports are in master mode, the dejitter circuit
can be bypassed by setting the dejitter window to 0. When the
serial ports are in slave mode, the dejitter circuit can be reinitialized
prior to outputting audio from the device, guaranteeing that audio
is output to the next subsystem in the device. Any time audio
needs to pass through the ADCs, serial port, sound engine/DSP
core, or DACs, the dejitter circuit can be bypassed and reset by
setting the dejitter window size to 0. Then, the dejitter circuit can
be immediately reactivated, without a wait period, by setting the
dejitter window size to the default value of 5.
Default
00000101