ADAU1445YSVZ-3A-RL Analog Devices Inc, ADAU1445YSVZ-3A-RL Datasheet - Page 68

• Manufacturer Part Number: ADAU1445YSVZ-3A-RL
• Description: 175MHZ SigmaDSP,2x8 SRCs
• Manufacturer: Analog Devices Inc
• Series: SigmaDSP®r
• Type: Audio Processorr

Specifications of ADAU1445YSVZ-3A-RL

• Applications: Automotive Audio
• Mounting Type: Surface Mount
• Package / Case: 100-TQFP Exposed Pad, 100-eTQFP, 100-HTQFP, 100-VQFP
• Format: Fixed Point
• Program Memory Size: Not RequiredKB
• Operating Supply Voltage (typ): 1.8/3.3V
• Operating Temp Range: -40C to 105C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 100
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADAU1445/ADAU1446
AUXILIARY ADC
The ADAU1445/ADAU1446 include a 10-bit auxiliary ADC that
can be used for control input signals. There is one ADC with four
multiplexed inputs. The ADC samples at a rate of f
(192 kHz when based on a 172.032 MHz core clock), which results
in an effective sampling rate of f
a 172.032 MHz core clock) per channel.
An ADC filtering function is included in the hardware, and
hysteresis is available to reduce the effects of noise on the input.
More information on these settings is available in Table 67.
The auxiliary ADC is not designed for audio and therefore
should not be used as an auxiliary audio input. The sample and
bit rates are too low to convert signals for audio applications.
The input can be filtered using several methods. The specific
filtering modes can be set as described in Table 67.
CORE
/3584 (48 kHz when based on
CORE
/896
Rev. A | Page 68 of 92
AUXILIARY ADC MODES AND SETTINGS
ADC Filter Mode Register (Address 0xE224)
Table 66. Bit Descriptions of Register 0xE224
Bit Position
[15:8]
[7:6]
[5:4]
[3:2]
[1:0]
Table 67. Settings of Bits[7:0], Register 0xE224
Mode Setting
00
01
10
11
Function
Filter bypass
ADC data filtered
Filtered with 1-bit hysteresis
Filtered with 2-bit hysteresis
ADC Channel
Reserved
ADC0
ADC1
ADC2
ADC3
Default
00