CS42325-CQZ Cirrus Logic Inc, CS42325-CQZ Datasheet - Page 55

• Manufacturer Part Number: CS42325-CQZ
• Description: IC CODEC STEREO AUDIO 48-LQFP
• Manufacturer: Cirrus Logic Inc
• Type: Audio Codecr

Specifications of CS42325-CQZ

• Package / Case: 48-LQFP
• Data Interface: Serial
• Resolution (bits): 24 b
• Number Of Adcs / Dacs: 1 / 2
• Sigma Delta: Yes
• Dynamic Range, Adcs / Dacs (db) Typ: 95 / 100
• Voltage - Supply, Analog: 3.13 V ~ 3.47 V
• Voltage - Supply, Digital: 3.13 V ~ 3.47 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Number Of Adc Inputs: 1
• Number Of Dac Outputs: 2
• Conversion Rate: 96 KSPS
• Interface Type: Serial (I2C, SPI)
• Resolution: 24 bit
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Number Of Channels: 1 ADC/2 DAC
• Supply Current: 10 mA to 24 mA
• Thd Plus Noise: - 88 dB ADC / - 90 dB DAC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

DS838A2
6.11
6.11.1
6.11.2
6.11.3
6.11.4
DAC2_DEPH
7
DAC2 Control (Address 0Ch)
DAC2 De-Emphasis Control
This bit enables the digital filter to apply the standard 15
sample rate (Fs) of 44.1 kHz. De-emphasis is available only in Single-Speed Mode.
DAC2 Single Volume Control
The individual channel volume levels are independently controlled by their respective Volume Control reg-
isters when this function is disabled. When enabled, the volume on DAC2 channels is determined by the
DAC2A Volume Control register and the DAC2B Volume Control register is ignored.
DAC2 Soft Ramp Control
Soft Ramp allows level changes, both muting and attenuation, to be implemented by incrementally ramp-
ing, in 1/8 dB steps, from the current level to the new level at a rate of 1 dB per 8 left/right clock periods.
DAC2 Zero Cross Control
Zero Cross Enable dictates that signal level changes, either by attenuation changes or muting, will occur
on a signal zero crossing to minimize audible artifacts. The requested level change will occur after a time-
out period between 512 and 1024 sample periods (10.7 ms to 21.3 ms at 48 kHz sample rate) if the signal
does not encounter a zero crossing. The zero cross function is independently monitored and implemented
for each channel.
Soft Ramp and Zero Cross Enable
Soft Ramp and Zero Cross Enable dictate that signal level changes, either by attenuation changes or mut-
ing, will occur in 1/8 dB steps and be implemented on a signal zero crossing. The 1/8 dB level change will
occur after a time-out period between 512 and 1024 sample periods (10.7 ms to 21.3 ms at 48 kHz sam-
ple rate) if the signal does not encounter a zero crossing. The zero cross function is independently mon-
itored and implemented for each channel.
0
1
0
1
0
1
0
0
1
1
DAC2_SNGVOL
DAC2_DEPH
DAC2_SOFT
DAC2_SOFT
SNGVOL
DAC2_
6
Off
On (valid for Fs = 44.1 kHz)
Off
On
Off
On
DAC2_SOFT
0
1
0
1
5
DAC2_ZC
DAC2_ZC
4
Changes to affect immediately
Zero Cross enabled
Soft Ramp enabled
Soft Ramp and Zero Cross enabled
DAC2 De-Emphasis Control
DAC2 Single Volume Control
LOOP_BACK
DAC2 Soft Ramp Control
DAC2_
3
μ
s/50
μ
s digital de-emphasis filter response for a
DAC2_INV
2
Mode
DAC2_MIX1
1
CS42325
DAC2_MIX0
0
55