RF2958 查看數據表（PDF） - RF Micro Devices

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RF2958

2.4GHz SPREAD-SPECTRUM TRANSCEIVER

RF Micro Devices 

RF2958

RF PLL Register 7 (RFPLL4)-Address 00111

Location

Bit Name Default

RFPLL4(17)

RFPLL4(16:8)

Reserved

DN(8:0)

0

145 h

RFPLL4(7:4)

RFPLL4(3:0)

CT_DEF(3:0)

7h

KV_DEF(3:0)

8h

Calibration Register 8 (CAL1)-Address 01000

Location

Bit Name Default

CAL1(17:13)

TVCO(4:0)

0Fh

CAL1(12:8)

TLOCK(4:0)

07h

CAL1(7:3)

CAL1(2:0)

M_CT_VALUE

08h

(4:0)

LD_WINDOW

2h

(2:0)

TXRX Register 9 (TXRX1)-Address 01001

Location

Bit Name Default

TXRX1(17)

RXDCFBBYPS

0

TXRX1(16:15)

PCONTROL

00

(1:0)

TXRX1(14:10)

TXRX1(9:7)

TXRX1(6:4)

TXRX1(3)

TXVGC(4:0)

RXLPFBW

(2:0)

TXLPFBW

(2:0)

TXDIFFMODE

00000

010

010

0

TXRX1(2)

TXENMODE

0

TXRX1(1)

INTBIASEN

0

TXRX1(0)

TXBYPASS

0

Function

Reserved, program to zero (0)

RF VCO KV Calibration, delta N value (signed 2’s complement)

DN = (deltaF/Fr) * 256

RF VCO Coarse Tuning Value

RF VCO KV Calibration, default value

Function

VCO1 Warm-up Time

TVCO1=(approximate warm-up time)x(Fr/32)

VCO1 Tuning Gain Calibration, approximate lock time

TLOCK1=(approximate lock time)x(Fr/128)

VCO1 Coarse Tune Calibration Reference clock averaging time

M_CT_VALUE=(averaging time)x(Fr/32)

Lock Detect Resolution 0 through 7

Function

Receiver DC Removal Loop

0=Enable DC Removal Loop

1=Disable DC Removal Loop

00

External TXVGC Controls VGA

01

External TXVGC Controls VGA

10

Internal Control of VGA from Register TXVGC(4:0)

11

Internal Control of VGA from Power Control

Transmit Variable Gain Select

0h-1Fh High gain to low gain

Receive Baseband Low Pass Filter Bandwidth Selection

000=Wide Bandwidth

111=Narrow Bandwidth

Transmit Baseband Low Pass Filter Bandwidth Selection

000=Wide Bandwidth

111=Narrow Bandwidth

Switches Between Single-Ended and Differential Mode

0=Single-ended mode

1=Differential mode

Input Buffer Enable TX

0=Input Buffer Controlled by TXEN

1=Input Buffer Controlled by BBEN

Internal Bias Enable

0=Disabled - External Bias Required

1=Enabled - Internal Bias Enabled

TX Baseband Filters Bypass

0=Not Bypassed

1 = Bypassed

Rev A0 050209

11-277

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