Dialog Semiconductor UM-B-065, Руководство пользователя

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UM-B-065
Bluetooth® Smart Communication Interface Board
User manual Revision 1.0 11-May-2016
CFR0012 9 of 24 © 2016 Dialog Semiconductor
Table 1: Signal association and description
Signal name J4 pin number
TAG-Connector 2.54 mm
J5 pin number
IDC10-1.27 mm
Description
VDD_Target 1 7 Target board supply voltage
SWDIO 2 4 JTAG data
SWCLK 3 3 JTAG clock
URX 4 2 UART receive
UTX 5 1 UART transmit
RST 6 6 Reset
VPP 7 5 OTP programming voltage
GND 8 8, 10 Ground
VTREF 9 9 Not applicable / no connection
NC 10 - No connection
4.3 Switches, buttons and LEDs
4.3.1 Reset button (SW1)
Reset to the target board is provided by pressing button SW1.
Figure 9: Reset button (SW1)
4.3.2 Reset function
4.3.2.1 Target board has reset functionality
In the case that the target board has reset functionality, the reset function is implemented by pushing
button
SW1. While the button SW1 is pressed, the signals SWDIO, SWCLK, UTX and URX are tied
to ground. These signals are available on connectors J4, J5 .
4.3.2.2 Target board has no reset functionality and is powered from the CIB
In the case that the reset signal of the target board is not accessed from CIB, the reset function is
implemented by switching off
SW2 . By setting SW2 in position OFF, the VDD_Target voltage goes
low, which causes power cycling of the target board. While the voltage is low, the signals SWDIO,
SWCLK, UTX and URX are tied to ground. These signals are available on connectors
J4, J5 .
4.3.2.3 Target board has no reset functionality and it is not powered from the CIB
In the case that the target board has no reset functionality (reset signal of the target board is not
accessed from CIB) and it is not powered from the CIB, the user must simultaneously:
●
Power-cycle the supply of the target board, and
●
Push the button SW1 .
While the button SW1 is pressed, the signals SWDIO, SWCLK, UTX and URX are tied to ground.
These signals are available on connectors J4, J5 .