12
DS726PP2
CS4525
2.1
Digital I/O Pin Characteristics
The logic level for each input is set by its corresponding power supply and should not exceed the maximum ratings.
Power
Supply
Pin
Number
Pin Name
I/O
Driver
Receiver
Software Mode
VD
1
INT
Output
2.5 V-5.0 V, Open Drain
2
SCL
Input
-
2.5 V-5.0 V, with Hysteresis
3
SDA
Input/Output
2.5 V-5.0 V, Open Drain
2.5 V-5.0 V, with Hysteresis
7
HP_DETECT
MUTE
Input
Input
-
-
2.5 V-5.0 V
2.5 V-5.0 V
41
DLY_SDOUT
Output
2.5 V-5.0 V, CMOS
-
42
DLY_SDIN
EX_TWR
Input
Input
-
-
2.5 V-5.0 V
2.5 V-5.0 V
43
AUX_SDOUT
Output
2.5 V-5.0 V, CMOS
-
44
AUX_SCLK
Output
2.5 V-5.0 V, CMOS
-
45
AUX_LRCK
Output
2.5 V-5.0 V, CMOS
-
VD_REG
39
PWM_SIG2
Output
2.5 V, CMOS
-
40
PWM_SIG1
Output
2.5 V, CMOS
-
Hardware Mode
VD
1
SEL_OSC0
Input
-
2.5 V-5.0 V
2
SEL_OSC1
Input
-
2.5 V-5.0 V
3
ADC/SP
Input
-
2.5 V-5.0 V
7
MUTE
Input
-
2.5 V-5.0 V
41
TWR
Output
2.5 V-5.0 V, Open Drain
-
42
ERRUVTE
Output
2.5 V-5.0 V, Open Drain
-
43
ERROC
Output
2.5 V-5.0 V, Open Drain
-
44
EN_TFB
Input
-
2.5 V-5.0 V
45
I²S/LJ
Input
-
2.5 V-5.0 V
All Modes
VD
4
LRCK
Input
-
2.5 V-5.0 V
5
SCLK
Input
-
2.5 V-5.0 V
6
SDIN
Input
-
2.5 V-5.0 V
8
RST
Input
-
2.5 V-5.0 V
9
LVD
Input
-
2.5 V-5.0 V
46
SYS_CLK
Input/Output
2.5 V-5.0 V, CMOS
2.5 V-5.0 V
VP
26
OUT4
Output
8.0 V-18.0 V Power MOSFET
-
29
OUT3
Output
8.0 V-18.0 V Power MOSFET
-
32
OUT2
Output
8.0 V-18.0 V Power MOSFET
-
35
OUT1
Output
8.0 V-18.0 V Power MOSFET
-
Table 1. I/O Power Rails
