Address 0X0114 And Address 0X0115 Main Volume Control Registers (Default: 0X0080, 0X0000); Address 0X0116 Tweeter Peak Limiter Control Register (Default: 0X0F00) - Analog Devices ADAV4601 System Design Document

Address 0x0114 and Address 0x0115 Main Volume Control Registers (Default: 0x0080,
0x0000)
These two registers control the volume for the main channel output.
The volume control words are 28-bit words in twos complement and a 5.23 format. This means there are five bits to
the left of the decimal point of which the most significant bit is the sign bit.
Table 25.
Bit No. Bit Name
Bits[15:12] Reserved
Bits[11:0] Woofer right balance control
register[27:0]
Bits [15:0] Woofer right balance control
register[27:0]

Address 0x0116 Tweeter Peak Limiter Control Register (Default: 0x0F00)

This register controls the peak limiter for the main output tweeter.
Table 26.
Bit No. Bit Description
Name
Bits[15:13] Reserved Always write as 0 if writing to this register.
Bits[12:8] Post gain These register bits control the post gain in the range of +15 dB to −15 dB in +1
dB steps.
0x00 = +15 dB
0x01 = +14 dB
...
0x08 = +7 dB
...
0x0F = +0 dB
...
0x16 = −7 dB
...
0x1D = −14 dB
0x1E = −15 dB
Bits[7:5] Hold These register bits control the hold time for the limiter, which is the time in ms
time that the limiter
holds the attenuated level after the current input to the limiter function falls
below the limiter
threshold.
0x0 = 0 ms
0x1 = 10 ms
0x2 = 20 ms
0x3 = 30 ms
0x4 = 40 ms
0x5 = 50 ms
0x6 = 60 ms
0x7 = 70 ms
ADAV4601 System Design Document
Rev.1 August 2009
Description
Always write as 0 if writing to this
register.
0x0114 Bits[11:0] = main volume
Bits[27:16]
0x0115 Bits[15:0] = main volume
Bits[15:0]
Analog Devices
Default
0000
000010000000
0000000000000000
Default
000
01111
000
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