Table 44: Sub-Register 0x2B:0B – FS_PLLTUNE values
8-bit value to program to
Sub-Register 0x2B:0B –
FS_PLLTUNE
7.2.44.4 Sub-Register 0x2B:0C – FS_RES2
Frequency synthesiser – Reserved area 2
Register file: 0x2B – Frequency synthesiser control block, sub-register 0x0C is a reserved area. Please take
care not to write to this area as doing so may cause the DW1000 to malfunction.
7.2.44.5 Sub-Register 0x2B:0E – FS_XTALT
Frequency synthesiser – Crystal trim
Register file: 0x2B – Frequency synthesiser control block, sub-register 0x0E is the crystal trim register. This
allows a fine control over the crystal oscillator to tune the DW1000 operating frequencies quite precisely.
For details of the use of this register please refer to section 8.1 – IC Calibration – Crystal Oscillator Trim.
N.B.: Bits 7:5 must always be set to binary “011”. Failure to maintain this value will result in DW1000
malfunction.
REG:2B:0E – FS_XTALT – Crystal Trim Setting
The bits of the FS_XTALT register identified above are individually described below:
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