Cirrus Logic CS44600 - Manual (Page 18)

18 DS633F1
CS44600
GPIO3 32
General Purpose Input, Output (Input/Output) - This pin is configured as an input follow-
ing a RST condition. It can be configured as a general purpose input or output which can
be individually controlled by the Host Controller.
GPIO2 33
General Purpose Input, Output (Input/Output) - This pin is configured as an input follow-
ing a RST condition. It can be configured as a general purpose input or output which can
be individually controlled by the Host Controller.
GPIO1 34
General Purpose Input, Output (Input/Output) - This pin is configured as an input follow-
ing a RST condition. It can be configured as a general purpose input or output which can
be individually controlled by the Host Controller.
GPIO0 35
General Purpose Input, Output (Input/Output) - This pin is configured as an input follow-
ing a RST condition. It can be configured as a general purpose input or output which can
be individually controlled by the Host Controller.
PSR_MCLK 49
Power Supply Rejection Master Clock (Output) - Master audio clock for external PSR
ADC (CS4461).
PSR_DATAL 50
Power Supply Rejection Input Serial Data (Input) - Input for serial audio data from
external PSR ADC (CS4461).
PSR_SYNC 51
Power Supply Rejection Sync Clock (Input) - Synchronization signal for external PSR
ADC (CS4461).
PSR_RESET 52
Power Supply Rejection Reset (Output) - The reset pin for the external Power Supply
Rejection circuitry.
PSR_EN 2
Power Supply Rejection Enable (Output) - The enable pin for the external Power Supply
Rejection circuitry.
PWMOUTA1+
PWMOUTA1-
PWMOUTB1+
PWMOUTB1-
PWMOUTA2+
PWMOUTA2-
PWMOUTB2+
PWMOUTB2-
PWMOUTA3+
PWMOUTA3-
PWMOUTB3+
PWMOUTB3- 64
63
61
60
58
57
55
54
47
46
44
43
PWM Output (Output) - PWM control signals for the Class D amplifier backend.
VDX 7 Crystal Power (Input) - Positive power supply for the Crystal section.
VD 19, 27 Digital Power (Input) - Positive power supply for the digital section.
VLC 17
Host Interface Power (Input) - Determines the required signal level for the digital
input/output signals for the host interface.
VLS 16
Digital Audio Interface Power (Input) - Determines the required signal level for the digital
input signals for the digital audio interface.
VDP
39, 45,
56, 62
PWM Interface Power (Input) - Determines the required signal level for the digital
input/output signals for the PWM and GPIO interface.
GND
1, 4,
18, 28,
36, 42,
48, 53,
59
Digital Ground (Input) - Ground reference for digital circuits.