Cirrus Logic CS42L73 - Manual (Page 15)

DS882F1 15
CS42L73
LINEOUTA
LINEOUTB F6
F5 G2
F2
Line Audio Output (Output) . The full-scale output level is specified in the Line Output
Characteristics specification table.
LINEO_REF G5 H3 Pseudodifferential Line Output Reference (Input) . Ground reference for the line amplifiers.
EAROUT+
EAROUT- G2
H2 J8
J7 Ear Speaker Audio Output (Output) . The full-scale output level is specified in the Ear Speaker
Output Characteristics specification table.
SPKOUT+
SPKOUT- G4
G3 J4
J6 Speakerphone Audio Output (Output) . The full-scale output level is specified in the
Speakerphone Output Characteristics specification table.
SPKLINEO+
SPKLINEO- F4
F3 H4
H5 Speakerphone Audio Line Output (Output) . The full-scale output level is specified in the
Speakerphone Line Output Characteristics specification table.
VA H1 J9 Analog Power (Input) . Power supply for the internal analog section.
VP H4 J5
Speakerphone Power (Input) . Power supply for the speakerphone output amplifier and mic bias
generators.
VCP E7 D2 Step-down Charge Pump Power (Input) . Power supply for the step-down charge pump.
VL B7 A1
Digital Interface/Core Power (Input) . Power Supply for the serial PCM audio ports, I²C control
port, and digital mic interface. Power supply for the digital core logic step-down regulator.
+VCP_FILT F7 E2
Step-down Charge Pump Filter Connection (Output) . Power supply from the step-down charge
pump that provides the positive rail for the headphone and line amplifiers.
-VCP_FILT H8 H1
Inverting Charge Pump Filter Connection (Output) . Power supply from the inverting charge
pump that provides the negative rail for the headphone and line amplifiers.
FLYP E8 E1
Charge Pump Cap Positive Node (Output) . Positive node for the headphone and line amplifiers’
step-down charge pump’s flying capacitor.
FLYC F8 F1
Charge Pump Cap Common Node (Output) . Common positive node for the headphone and line
amplifiers’ step-down and inverting charge pumps’ flying capacitors.
FLYN G8 G1
Charge Pump Cap Negative Node (Output) . Negative node for the headphone and line
amplifiers’ inverting charge pump’s flying capacitor.
VD_FILT B8 A2
Regulator Filter Connection (Output) . Power supply filter connection for the step-down regulator
that provides the low voltage power to the digital section.
ANA_VQ E1 G9 Quiescent Voltage, Analog (Output) . Filter connection for the internal VA quiescent voltage.
SPK_VQ H5 J3 Quiescent Voltage, Speaker (Output) . Filter connection for the internal VP quiescent voltage.
FILT+ F1 H9 Positive Voltage Reference (Output) . Positive reference voltage for the internal sampling circuits.
MICB_FILT D1 F9
Microphone Bias Source Voltage Filter (Output) . Filter connection for the internal quiescent
voltage used for the MICx_BIAS outputs.
AGND G1 N/A Analog Ground (Input) . Ground reference for the internal analog section.
PGND H3 N/A
Speakerphone Ground (Input) . Ground reference for the speakerphone and speakerphone line
output amplifiers. Connect to ground plane(s) on board to conduct heat away from the part.
CPGND G7 N/A
Charge Pump Ground (Input) . Ground reference for the internal headphone and line amplifiers
charge pump.
DGND A8 N/A Digital Ground (Input) . Ground reference for the internal digital section.
GND N/A
D4, D5,
D6, E4,
E5, E6,
F4, F5,
F6
Ground . Ground reference for internal analog (AGND), speakerphone and speakerphone line
output amplifiers (PGND), internal headphone and line amplifiers (CPGND), and the internal
digital section (DGND). These balls also provide thermal relief for the device. Connect to the
Ground plane of the circuit board.
THERM
D4, D5,
E4, E5
N/A
Thermal Relief Balls . Connect to the Ground plane of the circuit board. The Thermal Relief Balls
are not electrically connected to the device.
NC - - No Connect. No connection is required for these pins.
Name Location Description
WLCSP FBGA