ADAU1361BCPZ-R7 datasheet(68/78 Pages) AD

68 / 78 page

Data Sheet

ADAU1361

CONTROL REGISTERS

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Rev. E | 68 of 78

Table 69. Jack Detect Pin Control Register (Continued)

Bits

Bit Name

Description

[3:2]

JDP[1:0]

JACKDET/MICIN pad pull-up/pull-down configuration.

Setting

Configuration

Pull-up

Reserved

None (default)

Pull-down

R67: Dejitter Control, 16,438 (0x4036)

The dejitter control register allows the size of the dejitter window to be set, and 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 subordinate mode.

Disabling and reenabling certain subsystems in the device—that is, the ADCs, serial ports, 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.

When the serial ports are in main mode, the dejitter circuit can be bypassed by setting the dejitter window to 0. When the serial ports are in

subordinate 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 that audio must pass through the ADCs, serial port, or DACs, the dejitter circuit can be bypassed and reset

by setting the dejitter window size to 0. In this way, the dejitter circuit can be immediately reactivated, without a wait period, by setting the

dejitter window size to the default value of 3.

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

DEJIT[7:0]

Table 70. Dejitter Control Register

Bits

Bit Name

Description

[7:0]

DEJIT[7:0]

Dejitter window size.

Window Size

Core Clock Cycles

00000000

…

00000011

3 (default)

…

00000101

Table 71. R8 and R9 Volume Settings

Binary Value

Volume Setting (dB)

000000

−12

000001

−11.25

000010

−10.5

000011

−9.75

000100

−9

000101

−8.25

000110

−7.5

000111

−6.75

001000

−6

001001

−5.25

001010

−4.5

001011

−3.75

001100

−3

001101

−2.25

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