HBM2X1M
Bluetooth V1.2 Class 2 Module
Data Book
3
Terminal Descriptions
3.1 UART
Four signals are used to implement the UART function. UART_TXD and
UART_RXD transfer data between the two devices. The remaining two signals,
UART_CTS and UART_RTS, can be used to implement RS232 hardware flow
control where both are active low indicators.
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
Baud Rate
Flow Control
Parity
Number of Stop Bits
Bits per channel
Possible value
9600 ~ 1.5M Baud
RTS/CTS or None
None, Odd or Even
1 or 2
8
3.1.2
UART Bypass Mode
Switch the bypass to PIO[7:4] as shown in figure. When the bypass mode has been invoked, module
enters the deep sleep state indefinitely.
RESET
RXD
CTS
UART_CTS
RTS
TXD
Host Processor
UART
Test Interface
BlueCore3-Multimedia
External
UART_RX
PIO[7]
RX
Another Device
UART_TX
UART_RTS
PIO[4]
TX
PIO[5]
PIO[6]
RTS
CTS
www.hanamicron.co.kr
13 page / 18 pages
HANAMICRON [ HANAMICRON ]
