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3. Terminal Description
3.1 UART
Four signals are used to implement the UART function.
UART_TXD and UART_RXD transfer data between the two devices.
3.1.1 UART Setting
User can change data format the following selection using PSKEY.
However, host shall communicate with default setting UART connection initiated at first time.
Baud Rate = (PSKEY_UART_BAUD_RATE) / 0.004096
Parameter
Possible value
Baud Rate
9600 ~ 3M Baud
Flow Control
None
Parity
None, Odd or Even
Number of Stop Bits
1 or 2
Bits per channel
8
3.1.2 UART Bypass Mode
In order to apply the UART bypass mode, a BCCMD command will be issued to F1E21 upon this , it will
switch the bypass to PIO4,5,6,7 as shown in figure. When the bypass mode has been invoked, module
enters the deep sleep state indefinitely
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