Cirrus Logic CS44800 User Manual
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18
DS632F1
CS44800
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-
PWMOUTA4+
PWMOUTA4-
PWMOUTB4+
PWMOUTB4-
64
63
61
60
58
57
55
54
47
46
44
43
41
40
38
37
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.