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8266A-MCU Wireless-12/09
Bit 3 2 1 0
NA ($158) Resx3 Resx2 Resx1 Resx0 FTN_CTRL
Read/Write RW RW RW RW
Initial Value 1 0 0 0
This register controls the operation of the calibration loop of the filter tuning network.
• Bit 7 – FTN_START - Start Calibration Loop of Filter Tuning Network
FTN_START = 1 initiates the calibration of the filter tuning network. When the
calibration cycle has finished after at most 25 µs the register bit is automatically reset to
0.
• Bit 6:0 – Resx6:0 - Reserved
9.12.26 PLL_CF – Transceiver Center Frequency Calibration Control Register
Bit 7 6
NA ($15A) PLL_CF_START Resx6 PLL_CF
Read/Write RW RW
Initial Value 0 1
Bit 5 4
NA ($15A) Resx5 Resx4 PLL_CF
Read/Write RW RW
Initial Value 0 1
Bit 3 2
NA ($15A) Resx3 Resx2 PLL_CF
Read/Write RW RW
Initial Value 0 1
Bit 1 0
NA ($15A) Resx1 Resx0 PLL_CF
Read/Write RW RW
Initial Value 1 1
This register controls the operation of the center frequency calibration loop.
• Bit 7 – PLL_CF_START - Start Center Frequency Calibration
PLL_CF_START = 1 initiates the center frequency calibration. The calibration cycle has
finished after 35 µs (typical). The register bit is cleared immediately after finishing the
calibration.
• Bit 6:0 – Resx6:0 - Reserved
9.12.27 PLL_DCU – Transceiver Delay Cell Calibration Control Register
Bit 7 6 5 4
NA ($15B) PLL_DCU_START
Resx6 Resx5 Resx4 PLL_DCU
Read/Write RW R RW RW
Initial Value 0 0 1 0
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