max97002 Maxim Integrated Products, Inc., max97002 Datasheet - Page 26

• Manufacturer Part Number: max97002
• Description: Audio Subsystem With Mono Class D Speaker And Class H Headphone Amplifiers
• Manufacturer: Maxim Integrated Products, Inc.

Audio Subsystem with Mono Class D
Speaker and Class H Headphone Amplifiers
Table 4. Volume Control Registers
26
REGISTER
0x03
BIT
7
6
5
4
3
2
1
0
HPLVOL
NAME
SLEW
HPLM
ZCD
Zero-Crossing Detection. Determines whether zero-crossing detection is used on all vol-
ume control changes to reduce clicks and pops. Disabling zero-crossing detection allows
volume changes to occur immediately.
0 = Enabled
1 = Disabled
Volume Slewing. Determines whether volume slewing is used on all volume con-
trol changes to reduce clicks and pops. When enabled, volume changes cause the
MAX97002 to ramp through intermediate volume settings whenever a change to the
volume is made. If ZCD = 1, slewing occurs at a rate of 0.2ms per step. If ZCD = 0, slew
time depends on the input signal. Write a 1 to this bit to disable slewing and implement
volume changes immediately. This bit also activates soft-start at power-on and soft-stop
and power-off.
0 = Enabled
1 = Disabled
Left Headphone Mute
0 = Unmuted
1 = Muted
Left Headphone Volume
VALUE
0x0A
0x0B
0x0C
0x0D
0x0E
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0F
LEVEL (dB)
-60dB
-64
-56
-52
-48
-44
-40
-37
-34
-31
-28
-25
-22
-19
-16
-14
DESCRIPTION
VALUE
0x1C
0x1D
0x1A
0x1B
0x1E
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x18
0x19
0x1F
Volume Control
LEVEL (dB)
-12
-10
4.5
5.5
-8
-6
-4
-2
-1
0
1
2
3
4
5
6