User's Manual

FLC-BTM805 Datasheet
Flaircomm Microelectronics Confidential
-26-
T
opd
SCK low to SD_OUT valid delay time
-
-
18.44
ns
t
isu
SD_IN valid to SCK high set-up time
18.44
-
-
ns
T
ih
SCK high to SD_IN invalid hold time
0
-
-
ns
Table 14: Digital Audio Interface Slave Mode Timing Parameters
Figure 18: Digital Audio Interface Master Timing
4.4 RF Interface
The module integrates a balun filter. The user can connect a 50ohms antenna directly to the RF port
for BTM805CL2A. BTM805CL2B integrates an antenna internally.
4.5 General Purpose Digital IO
There are six general purpose digital IOs defined in the module. All these GPIOs can be configured
by software to realize various functions, such as button controls, LED displays or interrupt signals to
host controller, etc. Do not connect them if not use.
4.6 Host Interfaces
Use the host interface to:
 Configure BTM805 to suit the target platform requirements
 Transfer data to and from other Bluetooth devices.
BTM805 has a new automatic host transport selection scheme that does not require the use of PIOs.
4.6.1 UART Interface
This is a standard UART interface for communicating with other serial devices.
BTM805 UART interface provides a simple mechanism for communicating with other serial devices
using the RS232 protocol.