CC2510_15 Datasheet, PDF (226/245 Pages) Texas Instruments – Low-Power SoC (System-on-Chip) with MCU, Memory,2.4 GHz RF Transceiver, and USB Controller

CC2511F8 - Not Recommended for New Designs
14 Voltage Regulators
The CC2510Fx/CC2511Fx includes a low drop-out
voltage regulator. This is used to provide a 1.8
V power supply to the CC2510Fx/CC2511Fx digital
power supply. The voltage regulator should not
be used to provide power to external circuits
because of limited power sourcing capability
and also due to noise considerations.
14.1 Voltage Regulator Power-on
The voltage regulator is disabled when the
CC2510Fx/CC2511Fx is placed in power modes
PM2 or PM3 (see Section 12.1). When the
15 Radio Test Output Signals
For debug and test purposes, a number of
internal status signals in the radio may be
output on the port pins P1_7 - P1_5. This
debug option is controlled through the RF
registers IOCFG2 - IOCFG0. Table 73 shows
the value written to IOCFGx.GDOx_CFG[5:0]
with the corresponding internal signals that will
be output in each case.
CC2510Fx / CC2511Fx
The voltage regulator input pin AVDD_DREG is
to be connected to the unregulated 2.0 V to 3.6
V power supply. The output of the digital
regulator is connected internally in the
CC2510Fx/CC2511Fx to the digital power supply.
The voltage regulator requires an external
decoupling capacitor connected to the DCOUPL
pin as described in Section 9 on Page 33.
voltage regulator is disabled, register and RAM
contents will be retained while the unregulated
2.0 V - 3.6 V power supply is present.
Setting IOCFGx.GDOx_CFG to a value other
than 0 will override the P1SEL_SELP1_7,
P1SEL_SELP1_6, and P1SEL_SELP1_5
settings, and the pins will automatically
become outputs.
SWRS055G
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