CS42L52 Datasheet, PDF (8/82 Pages) Cirrus Logic – Low Power, Stereo CODEC w/Headphone & Speaker Amps

1. PIN DESCRIPTIONS
CS42L52
SDA ¹
SCL ²
TSTN 3
SPKR_OUTA+ 4
VP 5
SPKR_OUTA- 6
SPKR_OUTB+ ⁷
VP ⁸
SPKR_OUTB- ⁹
-VHPFILT ¹⁰
GND/Thermal Pad
Top-Down (Through-Package) View
40-Pin QFN Package
30 AIN1B
29 AIN1A
28 AFILTB
27 _AFILTA
26 _AIN2B
25 _AIN2A
24 AIN3B/MIC2-/MIC1B
23 _{AIN3A/MIC1-/MIC1A}
22 _{AIN4B/MIC2+/MIC2B}
21 _{AIN4A/MIC1+/MIC2A}
Pin Name
SDA
SCL
TSTN
SPKR_OUTA+
SPKR_OUTA-
SPKR_OUTB+
SPKR_OUTB-
VP
-VHPFILT
FLYN
FLYP
+VHP
HP/LINE_OUTB, A
#
Pin Description
1 Serial Control Data (Input/Output) - SDA is a data I/O in I²C Mode.
2 Serial Control Port Clock (Input) - Serial clock for the serial control port.
3 Test In - This pin is an input used for test purposes only. It must be tied to ground for normal oper-
ation.
4
6
7
PWM Speaker Output (Output) - Full-bridge amplified PWM speaker outputs.
9
5
8
Power for PWM Drivers (Input) - Power supply for the PWM output driver stages.
10 Inverting Charge Pump Filter Connection (Output) - Power supply from the inverting charge
pump that provides the negative rail for the headphone/line amplifiers.
11 Charge Pump Cap Negative Node (Output) - Negative node for the inverting charge pump’s fly-
ing capacitor.
12 Charge Pump Cap Positive Node (Output) - Positive node for the inverting charge pump’s flying
capacitor.
13 Positive Analog Power for Headphone (Input) - Positive voltage rail and power for the internal
headphone amplifiers and inverting charge pump.
14,15 Headphone/Line Audio Output (Output) - Stereo headphone or line level analog outputs.
8
DS680A1