Cirrus Logic CS5364 - Manual (Page 7)

DS625F5 7
CS5364
Pin Name Pin # Pin Description
AIN2+, AIN2-
AIN4+, AIN4-
AIN3+, AIN3-
AIN1+, AIN1- 1,2
11,12
13,14
47,48
Differential Analog (Inputs) - Audio signals are presented differently to the delta sigma modula-
tors via the AIN+/- pins.
GND
3,8
10,15
16,17
18,19
29,32
43,44
45,46
Ground (Input) - Ground reference. Must be connected to analog ground.
VA 4,9 Analog Power (Input) - Positive power supply for the analog section.
REF_GND 5
Reference Ground (Input) - For the internal sampling circuits. Must be connected to analog
ground.
FILT+ 6 Positive Voltage Reference (Output) - Reference voltage for internal sampling circuits.
VQ 7 Quiescent Voltage (Output) - Filter connection for the internal quiescent reference voltage.
VX 20
Crystal Oscillator Power (Input) - Also powers control logic to enable or disable oscillator cir-
cuits.
XTI
XTO
21
22 Crystal Oscillator Connections (Input/Output) - I/O pins for an external crystal which may be
used to generate MCLK.
MCLK 23
System Master Clock (Input/Output) - When a crystal is used, this pin acts as a buffered MCLK
Source (Output). When the oscillator function is not used, this pin acts as an input for the system
master clock. In this case, the XTI and XTO pins must be tied low.
LRCK/FS 24
Serial Audio Channel Clock (Input/Output)
In I²S mode, Serial Audio Channel Select. When low, the odd channels are selected.
In LJ mode, Serial Audio Channel Select. When high, the odd channels are selected.
In TDM Mode a frame sync signal. When high, it marks the beginning of a new frame of serial
audio samples. In Slave Mode, this pin acts as an input pin.
SCLK 25
Main timing clock for the Serial Audio Interface (Input/Output) - During Master Mode, this pin
acts as an output, and during Slave Mode it acts as an input pin.
TSTO 26 Test Out (Output) - Must be left unconnected.
SDOUT2 27 Serial Audio Data (Output) - Channels 3,4.
VLS 28 Serial Audio Interface Power - Positive power for the serial audio interface.
SDOUT1/TDM 30 Serial Audio Data (Output) - Channels 1,2.
TDM 31 TDM - TDM is complementary TDM data.
VD 33 Digital Power (Input) - Positive power supply for the digital section.
VLC 35 Control Port Interface Power - Positive power for the control port interface.
OVFL 36 Overflow (Output, open drain) - Detects an overflow condition on both left and right channels.
RST 41 Reset (Input) - The device enters a low power mode when low.