Bluetooth Audio Module
6.5. UART
This is a standard UART interface for communicating with other serial devices. The
UART interface provides a simple mechanism for communicating with other serial
devices using the RS232 protocol.
The UART CTS and RTS signals can be used to implement RS232 hardware flow
control where both are active low indicators.
Parameter
Possible Values
1200 baud (≤2%Error)
9600 baud (≤1%Error)
3M baud (≤1%Error)
RTS/CTS or None
None, Odd or Even
1 or 2
Minimum
Maximum
Baud Rate
Flow Control
Parity
Number of Stop Bits
Bits per Byte
8
Table 10: Possible UART Settings
Figure 3
：
Connection To Host device
6.6. I2C Master
PIO6, PIO7 and PIO8 can be used to form a master I C interface. The interface is formed using
2
software to drive these lines. It is suited only to relatively slow functions such as driving a LCD,
keyboard scanner or EEPROM. In the case, PIO lines need to be pulled up through 2.2K
Ω
resistors.
Shanghai Ehong Technologies Inc
