User's Manual

Bluegiga Technologies Oy
Page 11 of 41
OTHER
SIGNALS
PIN
NUMBER
PAD TYPE
DESCRIPTION
RST
25
Input, weak internal pull-
up, active low
System reset
ANT
31
RF, DC blocked
Antenna output on N variant, on A
and E variants not connected
BT
9
RF, DC blocked
Bluetooth antenna sharing RF input
Table 4: Other Terminal Descriptions
DEBUG SPI
INTERFACE
PIN
NUMBER
PAD TYPE
DESCRIPTION
SPI_MISO
11
Output, tri-state, weak
internal pull-down
Synchronous data output
SPI_CLK
12
Input, weak internal
pull-down
Synchronous clock input
SPI_MOSI
13
Synchronous data input
SPI_CS
26
Debug SPI Chip select, active low
Table 5: Debug SPI Terminal Descriptions