Texas Instruments CC2541 User Manual

www.ti.com Registers
RFRND (0x61A7) – Random Data
Bit Name Reset R/W Description
No.
7:2 – 0000 00 R0 Reserved. Read as 0
1
QRND
0 R/W Random bit from the Q channel of the receiver
0
IRND
0 R/W Random bit from the I channel of the receiver
PTEST0 (0x61BE) – Override Power-Down Register
Bit Name Reset R/W Description
No.
7
PRE_PD
0 R/W
Prescaler power-down signal when PD_OVERRIDE = 1
6
CHP_PD
0 R/W
Charge-pump power-down signal when PD_OVERRIDE = 1
5
ADC_PD
0 R/W
Analog-to-digital converter power-down signal when PD_OVERRIDE = 1
4
DAC_PD
0 R/W
Digital-to-analog converter power-down signal when PD_OVERRIDE = 1
3:2
LNA_PD[1:0]
0 R/W Low-noise amplifier power-down signal. Defines LNA/mixer PD modes.
00: Power up
01: LNA off, mixer/regulator on
10: LNA/mixer off, regulator on
11: PD
When PD_OVERRIDE = 1
1
TXMIX_PD
0 R/W
Transmit mixer power-down signal when PD_OVERRIDE = 1
0
AAF_PD
0 R/W
Antialiasing filter power-down signal when PD_OVERRIDE = 1
PTEST1 (0x61BF) – Override Power-Down Register
Bit Name Reset R/W Description
No.
7:4 – 0000 R0 Reserved. Read as 0
3
PD_OVERRIDE
0 R/W Override enabling/disabling of various modules. For debug and testing only. It is
impossible to override hard-coded BIAS_PD[1:0] depenency.
2
PA_PD
0 R/W
Power amplifier power-down signal when PD_OVERRIDE = 1
1
VCO_PD
0 R/W
Voltage-controlled oscillator power-down signal when PD_OVERRIDE = 1
0
LODIV_PD
0 R/W
LO power-down signal when PD_OVERRIDE = 1
283
SWRU191C–April 2009–Revised January 2012 CC253x Radio
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Texas Instruments CC2541 Specifications

General

Brand	Texas Instruments
Model	CC2541
Category	Microcontrollers
Language	English