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AT86RF232
9.4.4 Register Description
Register 0x10 (VREG_CTRL):
The VREG_CTRL register controls the use of the voltage regulators and indicates the
status of these.
Figure 9-8 . Register VREG_CTRL.
Bit
0x10
Read/Write
Reset value
Bit
0x10
Read/Write
Reset value
7
AVREG_EXT
R/W
0
3
DVREG_EXT
R/W
0
6
AVDD_OK
R
0
2
DVDD_OK
R
0
5
R
0
1
R
0
reserved
reserved
4
R
0
0
R
0
VREG_CTRL
VREG_CTRL
? Bit 7 - AVREG_EXT
If set this register bit disables the internal analog voltage regulator to apply an external
regulated 1.8V supply for the analog building blocks.
Table 9-5. AVREG_EXT.
Register Bits
AVREG_EXT
Value
0
1
Description
Internal voltage regulator enabled, analog section
Internal voltage regulator disabled, use external regulated
1.8V supply voltage for the analog section
? Bit 6 - AVDD_OK
This register bit indicates if the internal 1.8V regulated voltage supply AVDD has
settled. The bit is set to logic high, if AVREG_EXT = 1.
Table 9-6. AVDD_OK.
Register Bits
AVDD_OK
Value
0
1
Description
Analog voltage regulator is disabled or supply voltage not
stable
Analog supply voltage has been settled
? Bit 3 - DVREG_EXT
If set this register bit disables the internal digital voltage regulator to apply an external
regulated 1.8V supply for the digital building blocks.
Table 9-7. DVREG_EXT.
Register Bits
DVREG_EXT
Value
0
1
Description
Internal voltage regulator enabled, digital section
Internal voltage regulator disabled, use external regulated
1.8V supply voltage for the digital section
109
8321A – MCU Wireless – 10/11
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