CDB-43L21 Cirrus Logic Inc, CDB-43L21 Datasheet - Page 24

• Manufacturer Part Number: CDB-43L21
• Description: EVAL BOARD FOR CS43L21
• Manufacturer: Cirrus Logic Inc

Specifications of CDB-43L21

• Number Of Dac's: 2
• Number Of Bits: 24
• Outputs And Type: 2, Single Ended
• Sampling Rate (per Second): 96k
• Data Interface: I²C, SPI™
• Dac Type: Voltage
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -10°C ~ 70°C
• Utilized Ic / Part: CS43L21
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 598-1282; CDB-43L21

24
4.3
4.3.1
Analog Outputs
AOUTA and AOUTB are the ground-centered line or headphone outputs. Various signal processing options
are available, including an internal Beep Generator. The desired path to the DAC must be selected using
the DATA_SEL[1:0] bits.
Software
Controls:
De-Emphasis Filter
The CODEC includes on-chip digital de-emphasis optimized for a sample rate of 44.1 kHz. The filter re-
sponse is shown in
utilize 50/15 µs pre-emphasis equalization as a means of noise reduction. De-emphasis is only available
in Single-Speed Mode.
Software
Controls:
Hardware
Control:
DEEMPH
Demph
PCMMIXA_VOL[6:0]
PCMMIXB_VOL[6:0]
MUTE_PCMMIXA
MUTE_PCMMIXB
+12dB/-51.5dB
0.5dB steps
OFFTIME[2:0]
ONTIME[3:0]
“DAC Control (Address 09h)” on page
FREQ[3:0]
REPEAT
SIGNAL PROCESSING ENGINE (SPE)
VOL
BEEP
“DAC Control (Address 09h)” on page
Pin
“DEM” pin 4.
Generator
Figure
Beep
PCMA[1:0]
PCMB[1:0]
Channel
Swap
2.0dB steps
0dB/-50dB
BPVOL[4:0]
9. The de-emphasis feature is included to accommodate audio recordings that
VOL
LO
HI
Setting
Figure 8. Output Architecture
OUTA_VOL[7:0]
OUTB_VOL[7:0]
+12dB/-102dB
0.5dB steps
Chnl Vol.
Settings
Σ
DAC_SNGVOL
DAC_SZC[1:0]
DACA_MUTE
DACB_MUTE
INV_DACA
INV_DACB
AMUTE
VOL
42.
42.
BASS_CF[1:0]
TREB_CF[1:0]
TC_EN
Control
Treble/
+12.0dB/-10.5dB
BASS[3:0]
TREB[3:0]
Bass/
1.5dB steps
ARATE[7:0]
RRATE[7:0]
MAX[2:0]
MIN[2:0]
LIM_SRDIS
LIM_ZCDIS
LIMIT_EN
Limiter
Detect
Peak
De-Emphasis Applied
No De-Emphasis
Selection
DATA_SEL[1:0]
01
00
Capacitor DAC
and Filter
Switched
PDN_DACA
PDN_DACB
CHRG_FREQ[3:0]
Headphone
Amp - GND
Centered
Charge
Pump
HP_GAIN[2:0]
CS43L21
DS723A1
Left/Right
HP Out