LTC6945: Ultralow Noise and Spurious 0.35GHz to 6GHz Integer-N Synthesizer.
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/LTC6945
http://www.linear.com/product/LTC6945#demoboards
Copyright 2018(c) Analog Devices, Inc.
All rights reserved.
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Header for LTC6945: Ultralow Noise and Spurious 0.35GHz to 6.39GHz Integer-N Synthesizer
Definition in file LTC6945.h.
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uint8_t | LTC6945_read (uint8_t cs, int8_t address) |
| LTC6945 Read Single Address reads 8 bit Data field to LTC6945. More...
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long | LTC6945_read_field (uint8_t cs, uint8_t address, uint8_t MSB_loc, uint8_t numbits) |
| LTC6945 Read Single Field For SPI FIELDS located in 1 or multiple address location 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_LTC6945_SPI_FIELD (uint8_t cs, uint8_t f) |
| Gets the LTC6945 SPI field value calls function LTC6945_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 | LTC6945_write (uint8_t cs, uint8_t address, uint8_t Data) |
| LTC6945 Write Single Address writes 8 bit Data field to LTC6945. More...
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uint8_t | LTC6945_write_field (uint8_t cs, long field_data, uint8_t address, uint8_t MSB_loc, uint8_t numbits) |
| LTC6945 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_LTC6945_SPI_FIELD (uint8_t cs, uint8_t f, long field_data) |
| Sets the LTC6945 SPI field value calls function LTC6945_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_LTC6945_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 LTC6945 RW addresses. More...
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void | LTC6945_init () |
| Initializes the SPI MAP arrays The values set in initialization are used for all the LTC6945 SPI/WRITE and read functions (set_LTC6945_SPI_FIELD, get_LTC6945_SPI_FIELD, LTC6945_read, LTC6945_write, etc, etc) More...
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uint8_t | get_LTC6945_REGSIZE () |
| returns # of addresses in parts register map (array size) More...
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uint8_t | get_LTC6945_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_LTC6945_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 | LTC6945_calc_odiv (unsigned long frf[2]) |
| calculates the output divider setting based on the frf and on board VCO frequencies of LTC6945 More...
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void | LTC6945_set_frf () |
| FUNCTION: LTC6945_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_LTC6945_global_fref (unsigned long fref_MHz, unsigned long fref_Hz) |
| sets globals LTC6945_Fref_MHz and LTC6945_Fref_Hz More...
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void | set_LTC6945_global_frf (unsigned long frf_MHz, unsigned long frf_Hz) |
| sets globals LTC6945_Frf_MHz and LTC6945_Frf_Hz More...
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void | set_LTC6945_global_vcolim (unsigned long fvco_max_MHz, unsigned long fvco_max_Hz, unsigned long fvco_min_MHz, unsigned long fvco_min_Hz) |
| sets globals LTC6945_VCO_Max_Freq_MHz, LTC6945_VCO_Max_Freq_Hz, LTC6945_VCO_Min_Freq_MHz and LTC6945_VCO_Min_Freq_Hz More...
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unsigned long | get_LTC6945_global_fref_MHz () |
| returns global LTC6945_Fref_MHz More...
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unsigned long | get_LTC6945_global_fref_Hz () |
| returns global LTC6945_Fref_Hz More...
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unsigned long | get_LTC6945_global_frf_MHz () |
| returns global LTC6945_Frf_MHz More...
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unsigned long | get_LTC6945_global_frf_Hz () |
| returns global LTC6945_Frf_Hz More...
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unsigned long | get_LTC6945_global_VCO_MAX_MHz () |
| returns global LTC6945_VCO_Max_Freq_MHz More...
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unsigned long | get_LTC6945_global_VCO_MIN_MHz () |
| returns global LTC6945_VCO_Min_Freq_MHz More...
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unsigned long | get_LTC6945_global_VCO_MAX_Hz () |
| returns global LTC6945_VCO_Max_Freq_Hz More...
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unsigned long | get_LTC6945_global_VCO_MIN_Hz () |
| returns global LTC6945_VCO_Min_Freq_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 | LTC6945_CS QUIKEVAL_CS |
| Define the SPI CS pin. More...
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#define | LTC6945_BST 1 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_CP 2 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_CPCHI 3 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_CPCLO 4 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_CPDN 5 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_CPINV 6 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_CPMID 7 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_CPRST 8 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_CPUP 9 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_CPWIDE 10 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_FILT 11 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_LKCT 12 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_LKEN 13 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_LKWIN 14 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_LOCK 15 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_ND 16 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_OD 17 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_OMUTE 18 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_PART 19 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_PDALL 20 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_PDOUT 21 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_PDPLL 22 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_PDREFO 23 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_POR 24 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_RD 25 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_REV 26 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_RFO 27 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_THI 28 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_TLO 29 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_UNLOCK 30 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_x 31 |
| for spi_map array, defines location for field specific information used to create the spi map More...
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#define | LTC6945_NUM_REGADDR 12 |
| Defines number of LTC6945 SPI registers, used in spi_map array. More...
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#define | LTC6945_NUM_REGFIELD 31 |
| Defines number of LTC6945 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 | LTC6945_MINFREQ 350 |
| LTC6945 lower freq limit. More...
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#define | LTC6945_MAXFREQ 6000 |
| LTC6945 upper freq limit. More...
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#define | LTC6945_MIN_REF_FREQ 10 |
| LTC6945 lower reference frequency limit. More...
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#define | LTC6945_MAX_REF_FREQ 250 |
| LTC6945 upper reference frequency limit. More...
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