User's Manual
BT800 Hardware Integration Guide
Version 0.2
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www.lairdtech.com/bluetooth
9
CONN-GUIDE-BT800_v0_2
Implementation note.”
6 PIN DEFINITIONS
#
Pin Name
I/O
Supply
Domain
Description
1
SPI_PCM#_SEL
Input with
weak
internal
pull-down
VDD_PADS
High switches SPI/PCM lines to
SPI,
Low
switches SPI/PCM lines
to
PCM/PIO
2
VDD_HOST
Power supply
(3.1V-3.6V)
USB system positive supply
3
GND
GND
-
Ground
4
USB+
Bidirectional
VDD_HOST
USB data plus with selectable
internal 1.5kΩ pull-up resistor
5
USB-
Bidirectional
VDD_HOST
6
GND
GND
-
Ground
7
VREG_IN_USB
Power supply
Analogue
regulator
input
Input to USB regulator. Connect to
external
USB bus supply, e.g. USB_VBUS
8
VREG_EN_RST#
Input with strong
internal pull-down
VDD_PADS
Take high to enable internal
regulators. Also acts as active low
reset. Maximum voltage is
VDD_PADS.
Note: USB regulator is always
enabled and not controlled by
this pin
9
VREG_IN_HV
Analogue regulator
input / output
3.3V
Input to internal high-voltage
regulator to 1.8V regulator, 3.3V
output from USB regulator.
10
VREG_OUT_HV
Analogue regulator
input / output
1.8V
Output from internal high-voltage
to 1.8V regulator. Input to second
stage internal regulators.
11
GND
GND
-
Ground
12
GND
GND
-
Ground
13
GND
GND
-
Ground
14
GND
GND
-
Ground
15
GND
GND
-
Ground
16
GND
GND
-
Ground