CS44600-CQZ Cirrus Logic Inc, CS44600-CQZ Datasheet - Page 55

• Manufacturer Part Number: CS44600-CQZ
• Description: IC AMP CTLR DGTL 6CH 64LQFP
• Manufacturer: Cirrus Logic Inc
• Type: Digital Amplifier Controllerr

Specifications of CS44600-CQZ

• Package / Case: 64-LQFP
• Applications: Automotive Systems
• Mounting Type: Surface Mount
• Thd Plus Noise: 0.05 %
• Operating Supply Voltage: 2.5 V
• Supply Current: 150 mA
• Maximum Power Dissipation: 387 mW
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 10 C
• Supply Type: Digital
• Supply Voltage (max): 2.62 V
• Supply Voltage (min): 2.37 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 598-1023 - EVAL BOARD FOR CS44600
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 598-1068-5

DS633F1
7.8
7.8.1
7.9
7.9.1
MSTR_IVOL7
RESERVED
7
7
Master Volume Control - Integer (address 07h)
Master Volume Control - Fraction (address 08h)
Master Volume Control - Integer (MSTR_IVOL[7:0])
Default = 00000000
Function:
The Master Volume Control - Integer register allows global control of the signal levels on all channels in
1 dB increments from +24 to -127 dB. Volume settings are decoded as shown in Table 6. The volume
changes are implemented as specified by the Soft and Zero Cross bits (SZC[1:0]). All volume settings
greater than 00011000b are equivalent to +24 dB. Binary values for integer volume settings less than
0 dB are in two’s complement form.
Master Volume Control - Fraction (MSTR_FVOL[1:0])
Default = 00
00 - +0.00 dB
01 - +0.25 dB
10 - +0.50 dB
11 - +0.75 dB
Function:
The Master Volume Control - Fraction register is an additional offset to the value in the Master Volume
Control - Integer register and allows global control of the signal levels on all channels in 0.25 dB incre-
ments. Volume settings are decoded as shown in Table 7. These volume changes are implemented as
specified by the Soft and Zero Cross bits (SZC[1:0]). All volume settings greater than 00011000b are
equivalent to +24 dB. Binary values for integer and fractional volume settings less than 0 dB are in two’s
complement form.
To calculate from a positive decimal integer:fraction value to a binary positive integer:fraction value, do
the following:
1. Convert the decimal integer to binary. This is MSTR_IVOL[7:0].
2. Select the bit representation of the desired 0.25 fractional increment. This is MSTR_FVOL[1:0].
To calculate from a negative decimal integer:fraction value to a binary, 2’s complement integer:fraction
value, do the following:
MSTR_IVOL6
RESERVED
6
6
MSTR_IVOL[7:0]
0001 1000
0000 0001
0000 0000
1000 0001
0001 0111
1111 1110
1111 1111
MSTR_IVOL5
RESERVED
5
5
Table 6. Master Integer Volume Settings
MSTR_IVOL4
RESERVED
4
4
Hex Value
FF
FE
18
17
01
00
81
MSTR_IVOL3
RESERVED
3
3
Volume Setting
MSTR_IVOL2
RESERVED
-127 dB
+24 dB
+23 dB
+1 dB
-1 dB
-2 dB
0 dB
2
2
MSTR_FVOL1
MSTR_IVOL1
1
1
CS44600
MSTR_FVOL0
MSTR_IVOL0
0
0
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