HBH2X1M Datasheet, PDF (12/16 Pages) HANAMICRON – Bluetooth V2.0 + EDR Class 2 Module

HBH2X1M
Bluetooth V2.0 + EDR Class 2 Module
Data Book
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. 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
Possible value
Baud Rate
Flow Control
Parity
Number of Stop Bits
Bits per channel
9600 ~ 3M 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.
RXD
CTS
RTS
TXD
RESETB
UART_TX
UART_RTS
UART_CTS
UART_RX
Host Processor
Test Interface
UART
BlueCore4-ROM
www.hanamicron.co.kr
PIO[4]
PIO[5]
PIO[6]
PIO[7]
TX
RTS
CTS
RX
Another Device
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