AMB2300 manual V2.3
5/16
Released: 28.01.2010
I/O
RESETBB#
I
Reset, internal Pull up, active low
CTS#_BT
I
Host Serial Port Clear To Send, active low
2
RTS#_BT
O Host Serial Port Request To Send, active low
3
TX_BT
O Host Serial Port Transmit Data
RX_BT
I
Host Serial Port Receive Data
PG6
I/O GPIO (default setting as output, display a link connection)
NC
I
Not connected, no ground
Vcc
I
Power supply, 2.9V to 3.6V
Antenna
O Connection for external antenna
4
GND
O
Table 1
Pinout
The signal level is equivalent to the power supply voltage (2.9V to 3.6V) of the AMB2300 and
has to be matched, if the host system is working with a different signal level.
2.2.2 UART configuration with OP3, OP4, OP5
The serial interface of the AMB2300 must be configured as follows:
OP3
OP4
OP5
Function
NC
NC
NC
Not supported
NC VCC + Pull-up
NC
Not supported
VCC
NC
NC
UART speed read from NVS (EEPROM)
VCC
NC
VCC + Pull-up UART speed 9.6 kbps
VCC VCC + Pull-up
NC
UART speed 115.2 kbps
VCC VCC + Pull-up VCC + Pull-up UART speed 921.6 kbps
Table 2
UART configuration
Caution: in contrast to OP4 and OP5, OP3 must not use a pull-up resistor!
OP3, OP4 and OP5 are pulled down in AMB2300, therefore these pins for the low level are not
to be switched at GND. Here an example of circuit:
2
Connect with ground if not used
3
Not connected if not used
4
In as-delivered condition the antenna connection is internally not connected