User Manual

CLASSIFICATION PRODUCT SPECIFICATION
No.
DS-1026-2400-102
REV.
0.3
SUBJECT
CLASS 2 BLUETOOTH LOW ENERGY
SPP MODULE
PAGE 10 of 35
CUSTOMER’S CODE
PAN1026
PANASONIC’S CODE
ENW89837AxKF
DATE 02.10.2013
PANASONIC INDUSTRIAL DEVICES EUROPE GMBH www.pideu.panasonic.de
6.3.3 Frame Format
TC35661 supporting format is as follows.
 Number of data bits: 8 bits
 Parity bit: no parity
 Stop bit: 1 stop bit
 Flow control: RTS/CTS
UART data frame
6.3.4 Flow Control Function
TC35661 UART interface uses flow
control function by hardware signal, Transmit flow
control (CTSX) and receive flow control (RTSX). Above Figure shows signals input and
output direction .
CTSX input signal is used for UART transmitting. Low input indicates close of the
preparation of the other party to receive data and TC35661 executes UART transmitting
data if there is data for transmission. In case of input high level, TC35661 stops transmitting
by UART frame.
RTSX input signal is used for UART receiving. Low output indicates request data
transmission to UART transmit side device of the other party. TC35661 outputs Low level
from RTSX when being able to receive data and prepares to receive data.
Response time of UART transmitting and receiving for flow control signal depends on baud
rate and internal process status of frame. It is from 1 frame to 4 frames.
6.3.5 UART Baud Rate Setting
TC35661 UART interface has a programmable baud rate setting function. The UART baud
rate can be set according to the following equation. The baud rate generating clock
frequency is set to either 39 MHz or 52 MHz. The over-sampling number is set to an integer
UART Transmit data
UART Transmit
flow control
1
LSB 2 3 4 5 6 MSB
Start bit Stop bit
1 23456789 1
UART Receive flow
control
UART Receive data
1
LSB 2 3 4 5 6 MSB
Start bit Stop bit
OverSampling (*12 to17) /bit