CC2400-RTR1 datasheet(63/84 Pages) TI

63 / 84 page

CC2400

SWRS042A

Page 63 of 83

Bit

Field Name

Reset

R/W

Description

2:0

TC_TXEND2PAOFF[2:0]

R/W

The time in s from TX is stopped until the TX chain is turned off

and the state machine goes to the next state. The PKT signal will

then go low. This value must be greater than

TC_TXEND2SWITCH[2:0].

RESERVED (0x0C) - Reserved register containing spare control and status bits

Bit

Field Name

Reset

R/W

Description

15:5

RES[15:5]

R/W

Reserved

4:0

RES[4:0]

R/W

Reserved

MANAND (0x0D) - Manual signal AND override register

Bit

Field Name

Reset

R/W

Description

VGA_RESET_N

R/W

Overrides VGA_RESET_N used to reset the peak detectors in

the VGA in the RX chain.

Must be set to 0 during chip initialization.

LOCK_STATUS

R/W

Overrides the LOCK_STATUS top-level signal that indicates

whether VCO lock is achieved or not.

BALUN_CTRL

R/W

Overrides the BALUN_CTRL signal that controls whether the PA

should receive its required external biasing (1) or not (0) by

controlling the RX/TX output switch.

RXTX

R/W

Overrides the RXTX signal that controls whether the LO buffers

(0) or PA buffers (1) should be used.

PRE_PD

R/W

Power down of prescaler.

PA_N_PD

R/W

Power down of PA (negative path).

PA_P_PD

R/W

Power down of PA (positive path). When PA_N_PD=1 and

PA_P_PD=1 the up-conversion mixers are in powerdown.

DAC_LPF_PD

R/W

Power down of TX DACs.

BIAS_PD

R/W

Power down control of global bias generator + XOSC clock

buffer.

XOSC16M_PD

R/W

Power down control of 16 MHz XOSC core.

CHP_PD

R/W

Power down control of charge pump.

FS_PD

R/W

Power down control of VCO, I/Q generator, LO buffers.

2 For some important signals the value can be overridden manually by the MANAND and MANOVR registers. This is

done as follows for the hypothetical important signal

IS:

IS_USED = (IS * IS_AND_MASK) + IS_OR_MASK,

using Boolean notation.

The AND-mask and OR-mask for the important signals listed resides in the MANAND and MANOR registers,

respectively.

Examples:

•

Writing 0xFFFE to MANAND and 0x0000 to MANOR will force LNAMIX_PD=0 whereas all other signals will be

unaffected.

•

Writing 0xFFFF to MANAND and 0x0001 to MANOVR will force LNAMIX_PD=1 whereas all other signals will be

unaffected.

CC2400-RTR1 数据表(PDF) 63 Page - Texas Instruments

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CC2400-RTR1 数据表(PDF) 63 Page - Texas Instruments

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