LTC6946: Ultralow Noise and Spurious 0.37GHz to 6.39GHz Integer-N Synthesizer with Integrated VCO.
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LTC6946: Ultralow Noise and Spurious 0.37GHz to 6.39GHz Integer-N 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/LTC6946
http://www.linear.com/product/LTC6946#demoboards
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All rights reserved.
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Header for LTC6946: Ultralow Noise and Spurious 0.37GHz to 6.39GHz IntegerN Synthesizer with Integrated VCO
Definition in file LTC6946.h.
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uint8_t | LTC6946_read (uint8_t cs, int8_t address) |
| LTC6946 Read Single Address reads 8 bit Data field to LTC6946. More...
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long | LTC6946_read_field (uint8_t cs, uint8_t address, uint8_t MSB_loc, uint8_t numbits) |
| LTC6946 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_LTC6946_SPI_FIELD (uint8_t cs, uint8_t f) |
| Gets the LTC6946 SPI field value calls function LTC6946_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 | LTC6946_write (uint8_t cs, uint8_t address, uint8_t Data) |
| LTC6946 Write Single Address writes 8 bit Data field to LTC6946. More...
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uint8_t | LTC6946_write_field (uint8_t cs, long field_data, uint8_t address, uint8_t MSB_loc, uint8_t numbits) |
| LTC6946 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_LTC6946_SPI_FIELD (uint8_t cs, uint8_t f, long field_data) |
| Sets the LTC6946 SPI field value calls function LTC6946_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_LTC6946_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) |
| Writes values to ALL LTC6946 RW address. More...
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void | LTC6946_init () |
| Initializes the SPI MAP arrays The values set in initialization are used all the LTC6946 SPI/WRITE and read functions (set_LTC6946_SPI_FIELD, get_LTC6946_SPI_FIELD, LTC6946_read, LTC6946_write, etc, etc) More...
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uint8_t | get_LTC6946_REGSIZE () |
| returns # of addresses in parts register map (array size) More...
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uint8_t | get_LTC6946_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_LTC6946_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 | LTC6946_calc_odiv (char part_version[], unsigned long frf[2]) |
| calculates the output divider setting based on the frf and version of LTC6946 More...
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void | LTC6946_set_frf (char part_version[]) |
| FUNCTION: LTC6946_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_LTC6946_global_fref (unsigned long fref_MHz, unsigned long fref_Hz) |
| sets globals LTC6946_Fref_MHz and LTC6946_Fref_Hz More...
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void | set_LTC6946_global_frf (unsigned long frf_MHz, unsigned long frf_Hz) |
| sets globals LTC6946_Frf_MHz and LTC6946_Frf_Hz More...
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unsigned long | get_LTC6946_global_fref_MHz () |
| returns global LTC6946_Fref_MHz More...
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unsigned long | get_LTC6946_global_fref_Hz () |
| returns global LTC6946_Fref_Hz More...
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unsigned long | get_LTC6946_global_frf_MHz () |
| returns global LTC6946_Frf_MHz More...
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unsigned long | get_LTC6946_global_frf_Hz () |
| returns global LTC6946_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 | LTC6946_CS QUIKEVAL_CS |
| Define the SPI CS pin. More...
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#define | LTC6946_ALCCAL 1 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_ALCEN 2 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_ALCHI 3 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_ALCLO 4 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_ALCMON 5 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_ALCULOK 6 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_BD 7 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_BST 8 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_CAL 9 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_CP 10 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_CPCHI 11 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_CPCLO 12 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_CPDN 13 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_CPINV 14 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_CPMID 15 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_CPRST 16 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_CPUP 17 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_CPWIDE 18 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_FILT 19 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_LKCT 20 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_LKEN 21 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_LKWIN 22 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_LOCK 23 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_MTCAL 24 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_ND 25 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_OD 26 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_OMUTE 27 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_PART 28 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_PDALL 29 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_PDOUT 30 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_PDPLL 31 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_PDREFO 32 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_PDVCO 33 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_POR 34 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_RD 35 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_REV 36 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_RFO 37 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_THI 38 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_TLO 39 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_UNLOK 40 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_x 41 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6946_NUM_REGADDR 12 |
| Defines number of LTC6946 SPI registers, used in spi_map array. More...
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#define | LTC6946_NUM_REGFIELD 41 |
| Defines number of LTC6946 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 | LTC6946_1_MAXFREQ 3740 |
| LTC6946-1 upper freq limit. More...
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#define | LTC6946_2_MAXFREQ 4910 |
| LTC6946-2 upper freq limit. More...
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#define | LTC6946_3_MAXFREQ 5790 |
| LTC6946-3 upper freq limit. More...
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#define | LTC6946_4_MAXFREQ 6390 |
| LTC6946-4 upper freq limit. More...
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#define | LTC6946_1_MINFREQ 2240 |
| LTC6946-1 lower freq limit. More...
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#define | LTC6946_2_MINFREQ 3080 |
| LTC6946-2 lower freq limit. More...
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#define | LTC6946_3_MINFREQ 3840 |
| LTC6946-3 lower freq limit. More...
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#define | LTC6946_4_MINFREQ 4200 |
| LTC6946-4 lower freq limit. More...
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#define | LTC6946_MIN_REF_FREQ 10 |
| LTC6946 lower reference frequency limit. More...
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#define | LTC6946_MAX_REF_FREQ 250 |
| LTC6946 upper reference frequency limit. More...
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