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RM-497
System Module
Electrical Interface Between Baseband and Vibra
Introduction
The D2800 JUNO (BCM21351) BB ASIC has an integrated Vibra driver.
Vibra outputs will swing approximately 3V peak-to-peak.
D2800 Baseband ASIC (BCM21351) Vibra Interface Pins
Pin Name
VBRAMPL
AC12
P400P
VBRAMPL
AC13
P400M
Audio Concept
Audio Concept
The core audio hardware is integrated in the D2800 ASIC (JUNO). The D2800 provides the interfaces to all of
the audio transducers and additionally includes the output to the Vibra motor. The headset stereo output is
driven by an audio amplifier (N2000) and the IHF speaker is driven by D-class audio amplifiers (N2801).
There are 4 audio transducers:
• Microphone (Internal)
• 3.5mm jack for an Auxiliary Microphone (External) or Headset
• 1 Earpiece
• 1 IHF (Internal Hands Free) speaker
The platform supports the following audio applications:
• Voice Telephony
• Voice Recording
• FM Radio Reception
Issue 1
Pin
Figure 50 D2800 baseband ASIC (BCM21351) vibra interface pins
COMPANY CONFIDENTIAL
Copyright © 2010 Nokia. All rights reserved.
Vibra
I/O
Type
O
Analo
g
O
Analo
g
Description
Vibra positive output
Vibra negative output
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