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TRF2443IPFPR Datasheet(PDF) 33 Page - Texas Instruments

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Part # TRF2443IPFPR
Description  Integrated IF Transceiver for Broadband Wireless Applications
PDF  72 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TRF2443IPFPR Datasheet(HTML) 33 Page - Texas Instruments

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TX Synthesizer SPI registers
TRF2443
www.ti.com ................................................................................................................................... SLWS217A – SEPTEMBER 2009 – REVISED SEPTEMBER 2009
SPI1 Register 1
Register address
SPI address
TX reference divider
Bit0
Bit1
Bit2
Bit3
Bit4
Bit5
Bit6
Bit7
Bit8
Bit9
Bit10
Bit11
Bit12
Bit13
Bit14
Bit15
TX reference divider
REF
VCO
TX charge-pump current
TX CP
RSV
RSB
CP OFF CP UP CP DN
INV
NEG
DOUBLE
Bit16
Bit17
Bit18
Bit19
Bit20
Bit21
Bit22
Bit23
Bit24
Bit25
Bit26
Bit27
Bit28
Bit29
Bit30
Bit31
REGISTER
POWER-ON
SUGGESTED
NAME
DESCRIPTION
1
VALUE
VALUE
Bit0
ADDR_0
1
1
Register address bits
Bit1
ADDR_1
0
0
Bit2
ADDR_2
0
0
Bit3
ADDR_3
1
1
SPI address bits
Bit4
ADDR_4
0
0
Bit5
TXRDIV_0
0
App. specific
Bit6
TXRDIV_1
0
App. specific
14-bit reference divider value
(minimum value Rmin = 1;
Bit7
TXRDIV_2
0
App. specific
maximum value Rmax = 16,383)
Bit8
TXRDIV_3
0
App. specific
Bit9
TXRDIV_4
0
App. specific
Bit10
TXRDIV_5
0
App. specific
Bit11
TXRDIV_6
0
App. specific
Bit12
TXRDIV_7
0
App. specific
Bit13
TXRDIV_8
0
App. specific
Bit14
TXRDIV_9
0
App. specific
Bit15
TXRDIV_10
0
App. specific
Bit16
TXRDIV_11
0
App. specific
Bit17
TXRDIV_12
0
App. specific
Bit18
TXRDIV_13
0
App. specific
Bit19
TXREF_INV
0
0
Invert reference-clock polarity; 1 = use falling edge
Bit20
TXNEG_VCO
1
1
VCO polarity control; 1 = negative slope (negative Kv)
Bit21
TXICP_0
0
0
Program charge-pump dc current, ICP, from 0.5 mA (1 1111) to 2 mA
(0 0000);
Bit22
TXICP_1
1
1
default value 1 mA (0 1010)
Bit23
TXICP_2
0
0
Bit24
TXICP_3
1
1
Bit25
TXICP_4
0
0
Bit26
TXICPDOUBLE
0
0
1 = set ICP to double the current
Bit27
RSV
0
0
Reserved
Bit28
RSV
0
0
Reserved
Bit29
TXCP_OVERRIDE
0
0
1 = disable charge pump
Bit30
TXCP_UP
0
0
1 = enable the charge-pump source current in disable mode
Bit31
TXCP_DN
0
0
1 = enable the charge-pump sink current in disable mode
Copyright © 2009, Texas Instruments Incorporated
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Product Folder Link(s): TRF2443



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