DS726PP2
9
CS4525
LVD
9
VD Voltage Level Indicator
(
Input
) - Identifies the voltage level attached to VD. When applying
5.0 V to VD, LVD must be connected to VD. When applying 2.5 V or 3.3 V to VD, LVD must be
DGND.
DGND
10
Digital Ground
(
Input
) - Ground for the internal logic and digital I/O.
VD_REG
11
Core Logic Power
(
Output
) - Internally generated low voltage power supply for digital logic.
VD
12
Power
(
Input
) - Positive power supply for the internal regulators and digital I/O.
VA_REG
13
Analog Power
(Output)
- Internally generated positive power for the analog section and I/O.
AGND
14
Analog Ground
(
Input
) - Ground reference for the internal analog section and I/O.
FILT+
15
Positive Voltage Reference
(
Output
) - Positive reference voltage for the internal ADC sampling
circuits.
VQ
16
Common Mode Voltage
(
Output
)
-
Filter connection for internal common mode voltage.
AFILTL
AFILTR
17
18
Antialias Filter Connection
(
Output
) - Antialias filter connection for ADC inputs.
AINL
AINR
19
20
Analog Input
(
Input
)
-
The full-scale input level is specified in the ADC Analog Characteristics
specification table.
OCREF
21
Over Current Reference Setting
(
Input
) - Sets the reference for over current detection.
PGND
22,23
27,28
33,34
37,38
Power Ground
(
Input
) - Ground for the individual output power half-bridge devices.
RAMP_CAP
24
Output Ramp Capacitor
(
Input
) - Used by the PWM Popguard Transient Control to suppress the
initial pop in half-bridge-configured outputs.
VP
25,30,
31,36
High Voltage Power
(
Input
) - High voltage power supply for the individual half-bridge devices.
OUT4
OUT3
OUT2
OUT1
26
29
32
35
PWM Output
(
Output
) - Amplified PWM power outputs.
PWM_SIG2
PWM_SIG1
39
40
Logic Level PWM Output
(
Output
) - Logic Level PWM switching signals.
DLY_SDOUT
41
Delay Serial Audio Data Out
(
Output
) - Output for two’s complement serial audio data.
DLY_SDIN/
EX_TWR
42
Delay Serial Audio Data Input
(
Input
) - Input for two’s complement serial audio data.
External Thermal Warning
(
Input
) - Input for an external thermal warning signal. Configurable via
the I²C control port.
AUX_SDOUT
43
Auxiliary Port Serial Audio Data Out
(
Output
) - Output for two’s complement auxiliary port serial
data.
AUX_SCLK
44
Auxiliary Port Serial Clock
(Output
) - Serial clock for the auxiliary port serial interface.
AUX_LRCK/
AD0
45
Auxiliary Port Left Right Clock
(Output
) - Determines which channel, Left or Right, is currently
active on the serial audio data line.
AD0
(Input
) - Sets the LSB of the I²C device address. Sensed on the release of RST.
SYS_CLK
46
System Clock
(
Input/Output
) -Clock source for the internal logic, processing, and modulators. This
pin should be connected to through a 10k
Ω
to ground when unused.
XTO
47
Crystal Oscillator Output
(Output)
- Crystal oscillator driver output.
XTI
48
Crystal Oscillator Input
(
Input
) - Crystal oscillator driver input.
Thermal Pad
-
Thermal Pad
- Thermal relief pad for optimized heat dissipation. See
for more information.
