NXP Semiconductors
UM11152
NXQ1TXH5DB1355 plugin board
UM11152
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User manual
Rev. 1 — 6 December 2018
9 / 15
4 Commands and messages
This chapter explains the two commands that can be sent from a terminal to the
NXQ1TXH5DB1355 board and the response to those two commands.
4.1 Version
The values that are shown after typing "version" can be used to verify if the correct
parameters are set with the configuration resistors.
• LED mode
Indicates the LED mode that is selected with the resistor that is connected to the CNF4
pin.
• fod thr
Indicates the threshold level for the foreign object power (FOD_T in mW) that is
selected with the resistor to the CNF3 pin.
• fod e
Indicates the value of the equivalent loss resistance (FOD_E in mOhm) that is set with
the resistor to the CNF2 pin.
• cur limit
Indicates the current limit (mA) that is set with the resistor to the CNF1 pin.
• vbat limit
Indicates the voltage (mV) where the Smart Power Limiting (SPL) becomes active.
• ping duty
Duty cycle during the ping.
• ping freq
Frequency during the ping.
• pwm min freq
Minimum operating frequency of the NXQ1TXH5.
Figure 7
shows the connection of the configuration resistors. For more information
on this topic, see the application note "NXQ1TXH5/101 one-chip 5 V Qi wireless
transmitter" (
Ref. 1
), which is available from the NXP website.
aaa-031702
ADC
CNF1
CNF_IN
5 V
CNF2
CNF3
CNF4
SPR/SPL
FOD-E
FOD thres
config
5 V
R11
R7
R8
R9
R10
Figure 7. NXQ1TXH5 configuration