LTC6948: Ultralow Noise and Spurious 0.37GHz to 6.39GHz FracN Synthesizer with Integrated VCO.
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LTC6948: Ultralow Noise and Spurious 0.37GHz to 6.39GHz FracN Synthesizer with Integrated VCO.
SPI DATA FORMAT (MSB First):
Write Sequence:
Byte #1 Byte #2
MOSI: A6 A5 A4 A3 A2 A1 A0 W D7 D6 D5 D4 D3 D2 D1 D0
MISO: X X X X X X X X X X X X X X X X
Read Sequence:
Byte #1 Byte #2
MOSI: A6 A5 A4 A3 A2 A1 A0 R X X X X X X X X
MISO: X X X X X X X X D7 D6 D5 D4 D3 D2 D1 D0
W : SPI Write (0)
R : SPI Read (1)
Ax : Address
Dx : Data Bits
X : Don't care
http://www.linear.com/product/LTC6948
http://www.linear.com/product/LTC6948#demoboards
Copyright 2018(c) Analog Devices, Inc.
All rights reserved.
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Header for LTC6948: Ultralow Noise and Spurious 0.37GHz to 6.39GHz FracN Synthesizer with Integrated VCO
Definition in file LTC6948.h.
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uint8_t | LTC6948_read (uint8_t cs, int8_t address) |
| LTC6948 Read Single Address reads 8 bit Data field to LTC6948. More...
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long | LTC6948_read_field (uint8_t cs, uint8_t address, uint8_t MSB_loc, uint8_t numbits) |
| LTC6948 Read Single Field For SPI FIELDS located in 1 or multiple address locations reads specific address locations identifies and returns specific field in question can handle SPI fields in multiple addresses, if MSB bit is in the lower number address. More...
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long | get_LTC6948_SPI_FIELD (uint8_t cs, uint8_t f) |
| Gets the LTC6948 SPI field value calls function LTC6948_read_field, which reads specific address locations identifies and returns specific field in question can handle SPI fields in multiple addresses, if MSB bit is in the lower number address. More...
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void | LTC6948_write (uint8_t cs, uint8_t address, uint8_t Data) |
| LTC6948 Write Single Address writes 8 bit Data field to LTC6948. More...
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uint8_t | LTC6948_write_field (uint8_t cs, long field_data, uint8_t address, uint8_t MSB_loc, uint8_t numbits) |
| LTC6948 Write Single Field For SPI FIELDS in 1 or multiple address locations reads specific address/field location then writes to specific field can handle SPI fields in multiple addresses, if MSB bit is in the lower number address. More...
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void | set_LTC6948_SPI_FIELD (uint8_t cs, uint8_t f, long field_data) |
| Sets the LTC6948 SPI field value calls function LTC6948_read_field, which reads specific address/field location then writes to specific field can handle SPI fields in multiple addresses, if MSB bit is in the lower number address. More...
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void | set_LTC6948_ALLREGS (uint8_t cs, uint8_t reg01, uint8_t reg02, uint8_t reg03, uint8_t reg04, uint8_t reg05, uint8_t reg06, uint8_t reg07, uint8_t reg08, uint8_t reg09, uint8_t reg0A, uint8_t reg0B, uint8_t reg0C, uint8_t reg0D) |
| Writes values to ALL LTC6948 RW address. More...
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void | LTC6948_init () |
| Initializes the SPI MAP arrays The values set in initialization are used all the LTC6948 SPI/WRITE and read functions (set_LTC6948_SPI_FIELD, get_LTC6948_SPI_FIELD, LTC6948_read, LTC6948_write, etc, etc) More...
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uint8_t | get_LTC6948_REGSIZE () |
| returns # of addresses in parts register map (array size) More...
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uint8_t | get_LTC6948_SPI_FIELD_NUMBITS (uint8_t f) |
| returns the number of bits for a given field name in the SPI map More...
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uint8_t | get_LTC6948_SPI_FIELD_RW (uint8_t f) |
| returns if the given field name is (0)read/write or (1)read_only field More...
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unsigned long | LTC6948_calc_odiv (char part_version[], unsigned long frf[2]) |
| calculates the output divider setting based on the frf and version of LTC6948 More...
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void | LTC6948_set_frf (char part_version[]) |
| FUNCTION: LTC6948_set_frf Calculates the integer (N), fractional (NUM) and output divider (OD) SPI values using self created 64bit math functions. More...
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void | set_LTC6948_global_fref (unsigned long fref_MHz, unsigned long fref_Hz) |
| sets globals LTC6948_Fref_MHz and LTC6948_Fref_Hz More...
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void | set_LTC6948_global_frf (unsigned long frf_MHz, unsigned long frf_Hz) |
| sets globals LTC6948_Frf_MHz and LTC6948_Frf_Hz More...
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unsigned long | get_LTC6948_global_fref_MHz () |
| returns global LTC6948_Fref_MHz More...
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unsigned long | get_LTC6948_global_fref_Hz () |
| returns global LTC6948_Fref_Hz More...
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unsigned long | get_LTC6948_global_frf_MHz () |
| returns global LTC6948_Frf_MHz More...
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unsigned long | get_LTC6948_global_frf_Hz () |
| returns global LTC6948_Frf_Hz More...
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void | HZto64 (unsigned long an[], unsigned long MHzPart, unsigned long HzPart) |
| create a 64 bit Hz number from 32 bit xxxx MHz number and 32 bit yyy yyy Hz number. More...
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void | init64 (unsigned long an[], unsigned long bigPart, unsigned long littlePart) |
| Creates a equivalent 64 bit number from 2 32 bit numbers. More...
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void | shl64 (unsigned long an[]) |
| Single Bit shift left of equivalent 64 bit number (an[] = an[]<<1) More...
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void | shl64by (unsigned long an[], uint8_t shiftnum) |
| Multi Bit shift left of equivalent 64 bit number (an[] = an[]<<shiftnum) More...
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void | shr64 (unsigned long an[]) |
| Single Bit shift right of equivalent 64 bit number (an[] = an[]<<1) More...
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void | shr64by (unsigned long an[], uint8_t shiftnum) |
| Multi Bit shift right of equivalent 64 bit number (an[] = an[]>>shiftnum) More...
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void | add64 (unsigned long an[], unsigned long ann[]) |
| 64 bit Add ann to an (an[] = an[] + ann[]) More...
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void | sub64 (unsigned long an[], unsigned long ann[]) |
| 64 bit Subtract ann from an (an[] = an[] - ann[]) More...
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boolean | eq64 (unsigned long an[], unsigned long ann[]) |
| 64 bit, if an == ann, then true More...
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boolean | lt64 (unsigned long an[], unsigned long ann[]) |
| 64 bit, if an < ann, then true More...
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void | div64 (unsigned long num[], unsigned long den[]) |
| 64 bit Divide, num=num/div More...
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void | mul64 (unsigned long an[], unsigned long ann[]) |
| 64 bit multiply, an=an*ann More...
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void | prt (unsigned long an[]) |
| Prints HEX representation of 64 bit an. More...
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#define | LTC6948_CS QUIKEVAL_CS |
| Define the SPI CS pin. More...
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#define | LTC6948_ALCCAL 1 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_ALCEN 2 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_ALCHI 3 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_ALCLO 4 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_ALCMON 5 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_ALCULOK 6 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_AUTOCAL 7 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_AUTORST 8 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_BD 9 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_BST 10 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_CAL 11 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_CP 12 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_CPCHI 13 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_CPCLO 14 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_CPDN 15 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_CPINV 16 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_CPLE 17 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_CPMID 18 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_CPRST 19 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_CPUP 20 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_CPWIDE 21 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_DITHEN 22 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_FILT 23 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_INTN 24 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_LDOEN 25 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_LDOV 26 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_LKCT 27 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_LKWIN 28 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_LOCK 29 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_MTCAL 30 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_ND 31 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_NUM 32 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_OD 33 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_OMUTE 34 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_PART 35 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_PDALL 36 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_PDFN 37 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_PDOUT 38 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_PDPLL 39 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_PDVCO 40 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_POR 41 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_RD 42 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_REV 43 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_RFO 44 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_RSTFN 45 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_SEED 46 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_THI 47 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_TLO 48 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_UNLOK 49 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_x 50 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6948_NUM_REGADDR 15 |
| Defines number of LTC6948 SPI registers, used in spi_map array. More...
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#define | LTC6948_NUM_REGFIELD 50 |
| Defines number of LTC6948 SPI fields, used in spi_map array. More...
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#define | ADDRx 0 |
| used for 2nd dim of 2d spi_map array More...
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#define | DxMSB 1 |
| used for 2nd dim of 2d spi_map array More...
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#define | NUMBITS 2 |
| used for 2nd dim of 2d spi_map array More...
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#define | R_ONLY 3 |
| used for 2nd dim of 2d spi_map array More...
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#define | OneMHz 1000000L |
| 1MHz in long format, used in 64 bit math More...
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#define | LTC6948_1_MAXFREQ 3740 |
| LTC6948-1 upper freq limit. More...
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#define | LTC6948_2_MAXFREQ 4910 |
| LTC6948-2 upper freq limit. More...
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#define | LTC6948_3_MAXFREQ 5790 |
| LTC6948-3 upper freq limit. More...
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#define | LTC6948_4_MAXFREQ 6390 |
| LTC6948-4 upper freq limit. More...
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#define | LTC6948_1_MINFREQ 2240 |
| LTC6948-1 lower freq limit. More...
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#define | LTC6948_2_MINFREQ 3080 |
| LTC6948-2 lower freq limit. More...
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#define | LTC6948_3_MINFREQ 3840 |
| LTC6948-3 lower freq limit. More...
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#define | LTC6948_4_MINFREQ 4200 |
| LTC6948-4 lower freq limit. More...
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#define | LTC6948_MIN_REF_FREQ 10 |
| LTC6948 lower reference frequency limit. More...
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#define | LTC6948_MAX_REF_FREQ 425 |
| LTC6948 upper reference frequency limit. More...
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