adau1381 Analog Devices, Inc., adau1381 Datasheet - Page 70

• Manufacturer Part Number: adau1381
• Description: Low-noise Stereo Codec With Enhanced Recording And Playback Processing
• Manufacturer: Analog Devices, Inc.

ADAU1381
PAD CONFIGURATION
Figure 71 shows a block diagram of the pad design for the GPIO/serial port and communications port pins.
(CONTROLS NUMBER OF PARALLEL TRANSISTOR PAIRS)
DATA IN
IOVDD = 1.8V; LOW = 0.75mA, HIGH = 1.5mA
IOVDD = 3.3V; LOW = 2.0mA, HIGH = 4.0mA
DEBOUNCE
DEBOUNCE
ENABLE
WEAK PULL-DOWN ENABLE
OUTPUT PULL-UP ENABLE
WEAK PULL-UP ENABLE
(CONTROLS PMOS)
DRIVE STRENGTH
OUTPUT ENABLE
DATA OUT
ENABLE
INPUT
Figure 71. Pad Configuration, Internal Design
DIGITAL
SUPPLY
SHIFTER
SHIFTER
SHIFTER
LEVEL
LEVEL
LEVEL
SUPPLY
Rev. A | Page 70 of 84
I/O
PULL-DOWN
PULL-UP
ENABLE
WEAK PULL-UP/PULL-DOWN
ENABLE
190kΩ WORST CASE
240kΩ NOMINAL
INPUT
ESD
CONTROL
OUTPUT
LOGIC
6×
12×
PAD