Cirrus Logic CS42L73 - Manual (Page 2)

2
CS42L73
Stereo Analog to Digital Features
 91 dB Dynamic Range (A-wtd)
 -85 dB THD+N
 Independent ADC Channel Control
 2:1 Stereo Analog Input MUX
 Stereo Line Input
– Shared Pseudo-differential Reference Input
 Dual Analog MIC Inputs
– Pseudo-diff. or Single-ended
– Two, Independent, Programmable, Low-
noise, MIC Bias Outputs
– MIC Short Detect to Support Headset Button
 Analog Programmable Gain Amplifier (PGA)
(+12 to -6 dB in 0.5 dB steps)
 +10 dB or +20 dB Analog MIC Boost in Addition
to PGA Gain Settings
 Programmable Automatic Level Control (ALC)
– Noise Gate for Noise Suppression
– Progr. Threshold & Attack/Release Rates
Dual Digital Microphone Interface
 Programable Clock Rate
– Integer Divide by 2 or 4 of Internal MCLK
Stereo DAC to Headphone Amplifier
 94 dB Dynamic Range (A-wtd)
 -81 dB THD+N into 32 Ω
 Integrated Step-down/Inverting Charge Pump
 Class H Amplifier - Automatic Supply Adj.
– High Efficiency
– Low EMI
 Pseudo-differential Ground-centered Outputs
 High HP Power Output at -70/-81 dB THD+N
– 2 x 17/8.5 mW into 16/32 Ω @ 1.8 V
 Pop and Click Suppression
 Analog Vol. Ctl. (+12 to -50 dB in 1 dB steps; to
-76 dB in 2 dB steps) with Zero-cross Trans.
 Digital Vol. Ctl. (+12 to -102 dB in 0.5 dB steps)
with Soft-ramp Transitions
 Programmable Peak-detect and Limiter
Stereo DAC to Line Outputs
 97 dB Dynamic Range (A-wtd)
 -86 dB THD+N
 Class-H Amplifier
 Pseudo-differential Ground-centered Outputs
 1 V
RMS
Line Output @ 1.8 V
 Pop and Click Suppression
 Analog Vol. Ctl. (+12 to -50 dB in 1 dB steps; to
-76 dB in 2 dB steps) with Zero-cross Trans.
 Digital Vol. Ctl. (+12 to -102 dB in 0.5 dB steps)
with Soft-ramp Transitions
 Programmable Peak-detect and Limiter
Mono DAC to Ear Speaker Amplifier
 High Power Output at -70 dB (0.032%) THD+N
– 45 mW into 16 Ω @ 1.8 V
 Pop and Click Suppression
 Digital Vol. Ctl. (+12 to -102 dB in 0.5 dB steps)
with Soft-ramp Transitions
 Programmable Peak-detect and Limiter
Mono DAC to Speakerphone Amplifier
 High Output Power at ≤ 1% THD+N
– 1.18/0.84/0.66 W into 8 Ω @ 5.0/4.2/3.7 V
 Direct Battery-powered Operation
 Pop and Click Suppression
 Digital Vol. Ctl. (+12 to -102 dB in 0.5 dB steps)
with Soft-ramp Transitions
 Programmable Peak-detect and Limiter
Mono DAC to Speakerph. Line Output
 84 dB Dynamic Range (A-wtd)
 -75 dB THD+N
 High Voltage (1.53 V
RMS
@ VA = 1.8 V, VP =
3.7 V) Line Output to Ensure Maximum Output
from a Wide Variety of External Amplifiers
 Pop and Click Suppression
 Digital Vol. Ctl. (+12 to -102 dB in 0.5 dB steps)
with Soft-ramp Transitions
 Programmable Peak-detect and Limiter
Serial Ports
 Three Independent Serial Ports: Auxiliary,
Audio, and Voice
 8.00, 11.025, 12.00, 16.00, 22.05, 24.00,
32.00, 44.10, and 48.00 kHz Sample Rates
 All Ports Support Master or Slave Operation
with I²S Interface
 Auxiliary and Voice Ports Support Slave
Operation with PCM Interface
 Auxiliary and Audio Ports are Stereo-
Input/Stereo-Output to/from Digital Mixer
 Voice Port is Mono-Input/Stereo-Output to/from
Digital Mixer
 Integrated Asynch. Sample Rate Converters