UMTS/HSDPA Module
UC15 Hardware Design
UC15_Hardware_Design Confidential / Released 20 / 72
AUDIO interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
MIC1P 23 AI
Positive voice-band
input.
If it is unused,
keep open.
MIC1N 24 AI
Negative voice-band
input.
If it is unused,
keep open.
MIC2P 25 AI
Auxiliary positive
voice-band input.
If it is unused,
keep open.
MIC2N 26 AI
Auxiliary negative
voice-band input.
If it is unused,
keep open.
SPK1P 22 AO
Positive voice-band
output.
If it is unused,
keep open.
SPK1N 21 AO
Negative voice-band
output.
If it is unused,
keep open.
SPK2P 20 AO
Auxiliary positive
voice-band output.
If it is unused,
keep open.
AGND 19
Analog ground.
Separate ground
connection for
external audio
circuits.
Ground.
Other pins
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
WAKEUP_
IN
1 DI
Sleep mode control.
V
IL
min = -0.3V
V
IL
max = 0.91V
V
IH
min = 1.69V
V
IH
max = 2.9V
2.6V power domain.
Low level wakes up
the module.
3.4. Operating Modes
The table below briefly summarizes the various operating modes referred to in the following chapters.