Integration Guide

SMK900 Integration Guide Revision 4
Change
I2C
address
Writ
e
Write a new I2C address to the external sleep controller. Note
that changes are effective without having to reboot the external
sleep controller chip, less than 100 msec after the I2C command
is sent on the I2C bus.
[ADDR * 2, 0x28,
new I2C ADDR]
N/A
Change
reference
voltage
Writ
e
Change the reference voltage used for calibrating the voltage
measurements. Change is valid and enforced < 100 msec. after
end of I2C command.
[ADDR * 2, 0x11,
new REF voltage
LS byte, new REF
voltage MS byte]
N/A
Change
RF
channel
Writ
e
Change the generic RF channel value via I2C. Change is valid
and enforced < 100 msec. after end of I2C command.
[ADDR * 2, 0x18,
new RF channel
value]
N/A
Note that all byte streams are notated as a sequence of bytes in brackets [], and that ADDR is the current
I2C address of the external sleep controller chip when the command is issued from the I2C master side.
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