CC1110-RTR1 datasheet(193/203 Pages) TI

193 / 203 page

CC1110

CC1110 PRELIMINARY Datasheet (Rev. 1.01) SWRS033A

Page 193 of 202

16 Voltage Regulators

The

CC1110 includes a low drop-out voltage

regulator. This is used to provide a 1.8 V

power supply to the

CC1110 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

noise

considerations.

The

voltage

regulator

input

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

CC1110 to the

digital power supply.

The voltage regulator requires an external

decoupling capacitor connected to the

DCOUPL pin as described in section 11 on

page 29.

16.1 Voltage Regulator Power-on

The voltage regulator is disabled when the

CC1110 is placed in power modes PM2 or

PM3 (see section 13.10). When the

voltage regulator is disabled, register and

RAM contents will be retained while the

unregulated 2.0 V - 3.6 V power supply is

present.

17 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 52

shows

the

value

written

IOCFGx.GDOx_CFG[5:0]

with

the

corresponding internal signals that will be

output in each case.

CC1110-RTR1 Datasheet(PDF) 193 Page - Texas Instruments

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