decaWave DW1000 - Table 4: Register Accesses Required to Load

DW1000 User Manual
© Decawave Ltd 2017
Version 2.12
Page 24 of 242
Table 4: Register accesses required to load LDE microcode
Step
Number
Instruction
Register
Address
Data
Length
(Bytes)
Data
(Write/Read)
L-1
Write Sub-Register
0x36:00 (PMSC_CTRL0)
2
0x0301
L-2
Write Sub-Register
0x2D:06 (OTP_CTRL)
2
0x8000
Wait 150 µs
L-3
Write Sub-Register
0x36:00 (PMSC_CTRL0)
2
0x0200
2.5.5.11 LDOTUNE
It is necessary to load the LDOTUNE_CAL value from the OTP if it has been programmed during IC production
test calibration. To confirm if the LDOTUNE_CAL has been programmed first read the OTP address 0x4. If this
reads back as non-zero (only the first byte needs to be checked) then the device has been calibrated. To load
this value automatically following a wake up from SLEEP or DEEPSLEEP see the section on Waking from
sleep. To use this value immediately, it should be read directly from OTP and written to Sub Register File
0x28:30 LDOTUNE.