CC2400-RTR1 datasheet(70/84 Pages) TI1

70 / 84 page

CC2400

SWRS042A

Page 70 of 83

FSTST0 (0x1A) - Frequency Synthesiser Test Register 0

Bit

Field Name

Reset

R/W

Description

15:14

RXMIXBUF_CUR[1:0]

R/W

RX mixer buffer bias current.

0: 690uA

1: 980uA

2: 1.16mA (nominal)

3: 1.44mA

13:12

TXMIXBUF_CUR[1:0]

R/W

TX mixer buffer bias current.

0: 690uA

1: 980uA

2: 1.16mA (nominal)

3: 1.44mA

VCO_ARRAY_SETTLE_LONG

R/W

When '1' this control bit doubles the time allowed for VCO

settling during FS calibration.

VCO_ARRAY_OE

R/W

VCO array manual override enable.

9:5

VCO_ARRAY_O[4:0]

R/W

VCO array override value.

4:0

VCO_ARRAY_RES[4:0]

The resulting VCO array setting from the last calibration.

FSTST1 (0x1B) - Frequency Synthesiser Test Register 1

Bit

Field Name

Reset

R/W

Description

RXBPF_LOCUR

R/W

Controls reference bias current to RX band-pass filters:

0: 4 uA (nominal)

1: 3 uA

RXBPF_MIDCUR

R/W

Controls reference bias current to RX band-pass filters:

0: 4 uA (nominal)

1: 3.5 uA

13:10

VCO_CURRENT_REF[3:0]

R/W

The value of the reference current calibrated against during VCO

calibration.

9:4

VCO_CURRENT_K[5:0]

R/W

VCO current calibration constant (override value current B when

FSTST2.VCO_CURRENT_OE

=1).

VC_DAC_EN

R/W

Controls the source of the VCO control voltage in normal

operation (PAMTST.VC_IN_TEST_EN=0):

0: Loop filter (closed loop PLL)

1: VC DAC (open loop PLL)

2:0

VC_DAC_VAL[2:0]

R/W

VC DAC output value. (The value of the reference voltage used

during VCO calibration.)

CC2400-RTR1 数据表(PDF) 70 Page - Texas Instruments

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