User Manual Part 1

CY8CKIT-042-BLE Bluetooth® Low Energy (BLE) Pioneer Kit Guide, Doc. # 001-93731 Rev. *A 86
Example Projects
Figure 4-69. J5 Header to Interface RS232 Translator
4.6.2 Hardware Connection
For DTM test mode, it is recommended to use SMA connectors and connect the tester and DUT
using a SMA to SMA connector cable. This ensures that there is minimum interference to RF
communication between the DUT and tester, and the performance measured is the true RF
performance of the device. The BLE Pioneer kit module with SMA connector (CY8CKIT-141 PSoC 4
BLE) is available separately and can be ordered from the Cypress web page.
Four UART pins are exposed when HCI mode is selected in the BLE component. These pins should
be assigned to allow communication with the external tester. The connection depends on the tester
being used.
If the tester is a PC-based software and communicated with HCI over serial link, then the onboard
PSoC 5LP on the BLE Pioneer kit can act as the USB-UART bridge. The KitProg on the PSoC 5LP
enumerates as a USB-UART interface and opens a COM port in the PC. This COM port is then used
by the software tool to communicate commands to the BLE device. In this case, the UART pins
should be assigned as follows.
The UART for HCI communication exposes hardware flow control lines CTS and RTS. They can
either be connected to the hardware control lines of the tester or CTS connected to ground for oper-
ation without hardware flow control.
If the tester is an external hardware tester (CBT), then connect any of the RS232 voltage translators
to header J5 on the BLE Pioneer kit. The UART pins should be assigned as follows.
Table 4-3. UART Pin Assignment for PC Software Tester
UART Pins Pin Assigned
RX P1_4
TX P1_5
RTS P1_6
CTS P1_7