Infineon CYW920819M2EVB-01, Руководство пользователя, Страница: 21 / 35

User Guide 21 of 35 002-36452 Rev. **
2022-10-07
CYW920819M2EVB-01 evaluation kit user guide
Kit operation
2.6 USB serial interface chip
A CY8C5868LTI-LP039 PSoC ™ 5 LP chip is used for onboard programming and USB-Serial functionality. It
connects to the computer over a USB interface and connects to the CYW20819-A1 device through the HCI UART
and PUART pins.
2.7 Kit power supply
The kit can be powered by one of two power sources: USB or coin-cell battery.
As shown in Figure 7 , the USB power is connected to two buck regulators, one regulating the voltage to 1.8 V
and the other to 3.0 V. A coin-cell battery can be directly connected without the need of a regulator. See
Table 4 , Table 5 , Table 7 , and Table 9 to understand the jumper settings for power selection.
2.8 Test points
There are two ground test points for easy connection of probes. The voltage from various power domains can
be measured from their respective headers (J7, J8, and J16).
Table 20 Ground test points available in CYW920819M2EVB-01
Label Description
TP7, TP8 Test points for ground
2.9 Current measurement
The CYW20819 device has two power domains:
•
VIO_BASE to power the always ON GPIO pins
•
VBAT to power the core
The total current consumption by the device is the sum of the current consumed by the VIO_BASE and VBAT
power domains.
•
To measure the current consumed by the VIO_BASE domain, connect an ammeter across jumper J17.
•
To measure the current consumed by the VBAT domain, connect an ammeter across pin 3 and one of pins 1,
2, or 4 (depending on the power source) of jumper J8.
2.10 SWD debugging
ModusToolbox™ supports multiple Arm ®-JTAG adapters for debugging Bluetooth® products like CYW20819.
Debugging is possible on CYW920819M2EVB-01 through SWD signals. SWD is a 2-wire interface that uses SWD
input output (SWDIO) and serial wire clock (SWDCK) for debugging the device. These two lines can be brought
out to any of the LHL GPIOs on CYW20819. In CYW920819M2EVB-01, P3 will act as SWDIO and P2 will act as
SWDCK. See
Table 19 to enable SWD pins to the debug connector (J13).
After making these hardware configurations, see the Debugger guide ( <install>/libraries/bt_sdk-
<version>/docs/BT-SDK/ WICED-Hardware-Debugging.pdf) for debugging your application using
ModusToolbox ™ . This guide can also be accessed from Eclipse IDE for ModusToolbox ™ under the menu item
Help > ModusToolbox ™ General Documentation > ModusToolbox ™ Documentation Index > Bluetooth®
Documentation > Hardware Debugging for WICED Devices .