CS43L42-KZ Cirrus Logic Inc, CS43L42-KZ Datasheet - Page 21

• 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

4.7.4 DE-EMPHASIS CONTROL (DEM)
4.7.5 DIGITAL VOLUME CONTROL BYPASS (VCBYP)
4.8 Limiter Attack Rate (address 08h) (ARATE)
DS481PP2
ARATE7
Function:
Function:
Function:
7
0
Note:
Default = 00
00 - Disabled
01 - 44.1 kHz
10 - 48 kHz
11 - 32 kHz
Selects the appropriate digital filter to maintain the standard 15 µs/50 µs digital de-emphasis filter re-
sponse at 32, 44.1 or 48 kHz sample rates. (see Figure 30)
Default = 0
0 - Disabled
1 - Enabled
The digital volume control section is bypassed when this function is enabled. This disables the digital vol-
ume control, muting, bass boost, treble boost, limiting and ATAPI functions. The analog headphone at-
tenuation control will remain functional.
Default = 10h - 2 LRCK’s per 1/8 dB
The limiter attack rate is user selectable. The rate is a function of sampling frequency, Fs, and the value
in the Limiter Attack Rate register. Rates are calculated using the function RATE = 32/{value}, where
{value} is the decimal value in the Limiter Attack Rate register and RATE is in LRCK’s per 1/8 dB of
change.
Note:
Binary Code
ARATE6
00000001
00010100
00101000
01011010
00111100
De-emphasis is not available in High-Rate Mode.
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)).
6
0
Table 5. Example Limiter Attack Rate Settings
ARATE5
5
0
Decimal Value
20
40
60
90
1
ARATE4
4
1
LRCK’s per 1/8 dB
ARATE3
3
0
0.356
0.53
1.6
0.8
32
ARATE2
2
0
ARATE1
1
0
CS43L42
ARATE0
0
0
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