Rainbow Electronics ATmega128RFA1 - Manual (Page 122)

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8266A-MCU Wireless-12/09
ATmega128RFA1
Bit 3 2 1 0
NA ($15B) Resx3 Resx2 Resx1 Resx0 PLL_DCU
Read/Write RW RW RW RW
Initial Value 0 0 0 0
This register controls the operation of the calibration loop of the delay cell.
• Bit 7 – PLL_DCU_START - Start Delay Cell Calibration
PLL_DCU_START = 1 initiates the delay cell calibration. The calibration cycle has
finished after at most 6 µs. The register bit is cleared immediately after finishing the
calibration.
• Bit 6:0 – Resx6:0 - Reserved
9.12.28 PART_NUM – Device Identification Register (Part Number)
Bit 7 6 5 4 3 2 1 0
NA ($15C) PART_NUM7:0 PART_NUM
Read/Write R R R R R R R R
Initial Value 1 0 0 0 0 0 1 1
This register contains the part number of the device.
• Bit 7:0 – PART_NUM7:0 - Part Number
These bits decode the part number of the device according to the following table.
Table 9-62 PART_NUM Register Bits
Register Bits Value Description
PART_NUM7:0 0x83 ATmega128RFA1 part number
9.12.29 VERSION_NUM – Device Identification Register (Version Number)
Bit 7 6 5 4 3 2 1 0
NA ($15D) VERSION_NUM7:0 VERSION_NUM
Read/Write R R R R R R R R
Initial Value 0 0 0 0 0 0 0 0
This register contains the version number of the device. The device identification
overwrites the Reset value.
• Bit 7:0 – VERSION_NUM7:0 - Version Number
These bits decode the version number of the device according to the following table.
Table 9-63 VERSION_NUM Register Bits
Register Bits Value Description
2 Revision AB
3 Revision C
VERSION_NUM7:0
4 Revision D