CS43L42-KZ Cirrus Logic Inc, CS43L42-KZ Datasheet - Page 22

• Manufacturer Part Number: CS43L42-KZ
• Description: D/A Converter (D-A) IC
• Manufacturer: Cirrus Logic Inc

Specifications of CS43L42-KZ

• No. Of Pins: 24
• Peak Reflow Compatible (260 C): No
• No. Of Bits: 24 Bit
• Leaded Process Compatible: No
• Mounting Type: Surface Mount
• Interface Type: Serial
• Package / Case: 24-TSSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

4.9 Limiter Release Rate (address 09h) (RRATE)
4.10 Volume and Mixing Control (address 0Ah)
4.10.1 TONE CONTROL MODE (TC)
4.10.2 TONE CONTROL ENABLE (TC_EN)
22
RRATE7
TC1
Function:
Function:
Function:
7
0
7
0
Default = 20h - 16 LRCK’s per 1/8 dB
The limiter release rate is user selectable. The rate is a function of sampling frequency, Fs, and the value
in the Limiter Release Rate register. Rates are calculated using the function RATE = 512/{value}, where
{value} is the decimal value in the Limiter Release Rate register and RATE is in LRCK’s per 1/8 dB of
change.
Note:
Default = 00
00 - All settings are taken from user registers
01 - 12 dB of Bass Boost at 100 Hz and 6 dB of Treble Boost at 7 kHz
10 - 8 dB of Bass Boost at 100 Hz and 4 dB of Treble Boost at 7 kHz
11 - 4 dB of Bass Boost at 100 Hz and 2 dB of Treble Boost at 7 kHz
The Tone Control Mode bits determine how the Bass Boost and Treble Boost features are configured.
The user defined settings from the Bass and Treble Boost Level and Corner Frequency registers are used
when these bits are set to ‘00’. Alternately, one of three pre-defined settings may be used.
Default = 0
0 - Disabled
1 - Enabled
The Bass Boost and Treble Boost features are active when this function is enabled.
Binary Code
RRATE6
00000001
00010100
00101000
01011010
00111100
A value of zero in this register is not recommended, as it will induce erratic behavior of the limiter.
Use the LIM_EN bit to disable the limiter function (see Peak Signal Limiter Enable (LIM_EN)).
TC0
6
0
6
0
Table 6. Example Limiter Release Rate Settings
RRATE5
TC_EN
5
1
5
0
Decimal Value
20
40
60
90
1
RRATE4
LIM_EN
4
0
4
0
LRCK’s per 1/8 dB
RRATE3
ATAPI3
3
0
3
1
512
25
12
8
5
RRATE2
ATAPI2
2
0
2
0
RRATE1
ATAPI1
1
0
1
0
CS43L42
DS481PP2
RRATE0
ATAPI0
0
0
0
1