User's Manual
Table Of Contents
- 1. Introduction
- 2. General Specification
- 3. Pin Definition
- 4. Physical Interfaces
- 5. Electrical Characteristic
- 6. Reference Design
- 7. Mechanical Characteristic
- 8. Recommended PCB Layout and Mounting Pattern
- 9. Recommended Reflow Profile
- 10. Ordering Information
FLC-BTM403 Series User Manual
Flaircomm Technologies Confidential
-19-
Figure 12: PCM Master Timing Short Frame Sync
4.4 RF Interface
The module integrates a balun filter. The user can connect a 50ohms antenna directly to the RF port.
4.5 General Purpose Analogue IO
The general purpose analogue IO can be configured as ADC inputs by software. Do not connect
them if not use.
4.6 General Purpose Digital IO
The general purpose digital IO can be configured by software to have various functions such as
button, LED or interrupt signals to host controller. Do not connect them if not use.
4.7 Serial Interfaces
4.7.1 UART
This is a standard Universal Asynchronous Receiver Transmitter (UART) interface for
communicating with other serial devices. Four signals UART_TX, UART_RX, UART_CTS, and
UART_RTS are used to implement the UART function, UART_CTS, UART_RTS can be used to
implement hardware flow control. PIO2 and PIO3 can be configured as DTR and RTS.