User Manual

Bluetooth Audio Module
Ehong Technology Co., Ltd
The UART CTS and RTS signals can be used to implement RS232 hardware flow control where
both are active low indicators.
Table 10: Possible UART Settings
Figure 3：Connection To Host device
6.7. I2C Master
PIO6, PIO7 and PIO8 can be used to form a master I
2
C interface. The interface is formed using
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 2.2KΩ
resistors.
Parameter Possible Values
Baud Rate
Minimum
1200 baud (≤2%Error)
9600 baud (≤1%Error)
Maximum 3M baud (≤1%Error)
Flow Control RTS/CTS or None
Parity None, Odd or Even
Number of Stop Bits 1 or 2
Bits per Byte 8