CDB3318 Cirrus Logic Inc, CDB3318 Datasheet - Page 17

• Manufacturer Part Number: CDB3318
• Description: Eval Bd - 8-channel Digital Vol Cntrl
• Manufacturer: Cirrus Logic Inc

Specifications of CDB3318

• Main Purpose: Audio, Volume Control
• Embedded: No
• Utilized Ic / Part: CS3318
• Primary Attributes: 8 Single-Ended Analog Inputs and Outputs, USB or RS232 Interface
• Secondary Attributes: Graphical User Interface
• Description/function: Audio DSPs
• Operating Supply Voltage: 8 V to 9 V
• Product: Audio Modules
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: CS3310
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant, Contains lead / RoHS non-compliant
• Other names: 598-1497

DS693F1
5.4
5.4.1
Volume & Muting Control Architecture
The CS3318’s volume and muting control architecture provides the ability to control each channel on an
individual and master basis.
Individual control allows the volume and mute state of a single channel to be changed independently from
all other channels within the device. The CS3318 provides 8 individual volume and muting controls, each
permanently assigned to one channel within the device.
Master control allows the volume and mute state of multiple channels to be changed simultaneously with a
single register write. The CS3318 provides three master controls, and each may be configured to affect any
group of channels within a device.
Refer to the
on page 21
Control Mapping Matrix
Figure 5
that the individual channel controls are fixed to their respective channel, and the master controls may be
configured to affect any or all channels within the device.
Each master control has a corresponding Master X Mask register which allows the user to select which
channels are affected by the control. By default, each master control is configured to affect all channels
within the device. Referring to
broken by setting or clearing its corresponding bit in the control’s Master X Mask register.
The contents of the Master X Mask registers determine which channels are affected by both a master con-
trol’s volume and mute settings. Refer to the
page 18
for a complete diagram of the CS3318’s volume and muting control architecture.
shows a conceptual drawing of the CS3318’s internal control-to-channel mapping matrix. Notice
for an in-depth description of the operation of the available controls.
“Volume Controls” section beginning on page 19
Volume & Muting
Gain/Attenuation
Channel 1
Channel 2
Channel 3
Channel 4
Channel 5
Channel 6
Channel 7
Channel 8
Controls
Master 1
Master 2
Master 3
Analog
Stages
Figure 5
Figure 5. CS3318 Control Mapping Matrix
Fixed Connection
Ch. 1
below, each configurable connection shown may be made and
Ch. 2
“Volume & Muting Control Implementation” section on
Ch. 3
Control Mapping Matrix
Configurable Connection
Ch. 4
and the
Ch. 5
Ch. 6
“Muting Controls” section beginning
Ch. 7
Ch. 8
CS3318
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