Address 0X0108 Main Channel Loudness Register (Default: 0X0000); Address 0X0109 Crossover Register (Default: 0X0505) - Analog Devices ADAV4601 System Design Document

Bit No. Bit Description
Name
0x26 = −7 dB
...
0x2F = −11.5 dB
0x30 = −12 dB

Address 0x0108 Main Channel Loudness Register (Default: 0x0000)

Table 17.
Bit No. Bit Name
Bits[15:7] Reserved
Bits[6:5] Cutoff
frequency
Bits[4:0] Loudness level

Address 0x0109 Crossover Register (Default: 0x0505)

Table 18.
Bit No. Bit Name
Bits[15:14] Reserved
Bits[13:8] Low crossover
frequency
Bits[7:6] Reserved
Bits[5:0] High crossover
frequency
ADAV4601 System Design Document
Rev.1 August 2009
Description
Always write as 0 if writing to this register.
These register bits are used to control the cutoff frequency of the
loudness.
00b – 10 Hz
01b – 30 Hz
10b – 50 Hz
11b – 70 Hz
These register bits are used to control the required level of loudness.
0x00 = 0 dB
0x01 = +1 dB
...
0x0E = +14 dB
0x0F = +15 dB
Description
Always write as 0 if writing to this register.
The low crossover frequency is the cutoff frequency of the
crossover low-pass filter. This means that only the frequencies
under this frequency are sent to the woofer output. The frequency
changes in 10 Hz steps.
0x00 = 50 Hz
0x01 = 60 Hz
0x02 = 70 Hz
0x03 = 80 Hz
0x04 = 90 Hz
0x05 = 100 Hz
0x06 = 110 Hz
...
0x2D = 500 Hz
0x2E = 510 Hz
Always write as 0 if writing to this register.
The high crossover frequency is the cutoff frequency of the
crossover high-pass filter. This means that only the frequencies
above this frequency are sent to the tweeter output.
0x00 = 50 Hz
0x01 = 60 Hz
0x02 = 70 Hz
Analog Devices
Default
Default
000000000
00
00000
Default
00
000101
00
000101
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