Pin Descriptions - Cirrus Logic CS4265 Manual

1. PIN DESCRIPTIONS

Pin Name # Pin Description
SDA 1 Serial Control Data (Input/Output) - Bidirectional data line for the I²C control port.
SCL 2 Serial Control Port Clock (Input) - Serial clock for the I²C control port.
3 Control Port Power (Input) - Determines the required signal level for the control port interface. Refer to
VLC
the Recommended Operating Conditions for appropriate voltages.
RESET 4 Reset (Input) - The device enters a low-power mode when this pin is driven low.
VA 5 Analog Power (Input) - Positive power for the internal analog section.
AGND 6 Analog Ground (Input) - Ground reference for the internal analog section.
AINA 7, Analog Input (Input) - The full-scale level is specified in the ADC Analog Characteristics specification
AINB 8 table.
SGND 9 Signal Ground (Input) - Ground reference for the analog line inputs.
AFILTA 10,
Antialias Filter Connection (Output) - Antialias filter connection for the ADC inputs.
AFILTB 11
VQ 12 Quiescent Voltage (Output) - Filter connection for internal quiescent voltage.
FILT+ 13 Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits.
MICIN1 14, Microphone Input (Input) - The full-scale level is specified in the ADC Analog Characteristics specifica-
MICIN2 15 tion table.
16 Microphone Bias (Output) - Low noise bias supply for external microphone. Electrical characteristics
MICBIAS
are specified in the DC Electrical Characteristics table.
DS657F3
32 31
SDA
1
SCL
2
VLC
3
RESET
4
VA
5
AGND
6
AINA
7 Top-Down (Through Package) View
AINB
8
9 10
30 28 27 26
29
Thermal Pad
32-Pin QFN Package
11 12 13 14 15
25
SDIN2
24
TXSDIN
23
VLS
22
MUTEC
21
AOUTB
20
AOUTA
19
AGND
18
VA
17
16
CS4265
7