BC41B143A-ANN-E4 ETC, BC41B143A-ANN-E4 Datasheet - Page 60

• Manufacturer Part Number: BC41B143A-ANN-E4
• Description: Bluecore 4-rom CSP EDR Single Chip Bluetooth v2.0 + EDR System
• Manufacturer: ETC

11.4 UART Interface
BlueCore4-ROM CSP UART interface provides a simple mechanism for communicating with other serial devices
using the RS232 standard
Four signals are used to implement the UART function:
When BlueCore4-ROM CSP is connected to another digital device, UART_RX and UART_TX 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. That is, low means data can be sent. All
UART connections are implemented using CMOS technology and have signalling levels of 0V and VDD_PADS.
UART configuration parameters, such as Baud rate and packet format, are set using BlueCore4-ROM CSP PS
keys.
Notes:
Baud Rate
Flow Control
Parity
Number of Stop Bits
Bits per channel
BC41B143A-ds-002Pd
!
!
!
!
To communicate with the UART at its maximum data rate using a standard PC, an accelerated serial port
adapter card is required for the PC.
(1)
UART_TX
UART_RX
UART_RTS
UART_CTS
Uses RS232 protocol but voltage levels are 0V to VDD_USB (requires external RS232 transceiver chip)
(1)
.
This material is subject to CSR’s non-disclosure agreement
Parameter
Table 11.5: Possible UART Settings
Minimum
Maximum
© Cambridge Silicon Radio Limited 2005
Production Information
RTS/CTS or None
1200 Baud (≤2%Error)
9600 Baud (≤1%Error)
3MBaud (≤1%Error)
None, Odd or Even
1 or 2
8
Device Terminal Descriptions
Possible Values
Page 60 of 89