MFB
13
MultiFunctionalButton
VREGENABLE_H
5V
14
Lithium ion/polymer battery charger
input
VDD_CHG
BATT
16
Lithium ion/polymer battery positive
terminal.Battery
charger
output
and
input
to
switchmoderegulator
BAT_P
MOSI
17
SPIdatainput
Input,
with
weak
internalpulldown
CLK
18
SPIclock
Bidirectional
with
weak
internal
pulldown
CSB
19
ChipselectforSPI,activelow
Bidirectional
with
weak
internal
pulldown
MISO
20
SPIdataoutput
Bidirectional
with
weak
internal
pulldown
SPI_EN
21
Debuginterfaceinput
Input
with
strong
internalpulldown
1.9V
22
Highvoltageregulatoroutput
VREGOUT_H
MIC_BIAS
23
Microphonebias
Analogue
MIC_P
24
Microphoneinput,positive
Analogue
MIC_N
25
Microphoneinput,negative
Analogue
SPK_N
26
Speakeroutput,negative
Analogue
SPK_P
27
Speakeroutput,positive
Analogue
RF_OUT
29
SPIclock
Transmitter
output/switched
receiver
Summary of Contents for Vs 4.0
Page 1: ......
Page 9: ...2 4...
Page 12: ...4 Application Block diagram...
