User's Manual

Bluegiga Technologies Oy
Page 10 of 40
USB Interfaces
PIN
NUMBER
PAD TYPE DESCRIPTION
USB+ 8 Bidirectional
USB data plus with selectable internal 1.5k
p
ull-u
p
resistor
USB- 9 Bidirectional USB data minus
Table 5: USB Terminal Descriptions
SPI
INTERFACE
PIN
NUMBER
PAD TYPE DESCRIPTION
SPI_MOSI 24
CMOS input with weak
internal pull
-
down
SPI data input
SPI_CS# 21
CMOS input with weak
internal pull-up
Chip select for Serial Peripheral
Interface, active low
SPI_CLK 22
CMOS input with weak
internal pull-down
SPI clock
SPI_MISO 23
CMOS output, tristate,
with weak internal pull
down
SPI data output
Table 6: Terminal Descriptions