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Diffstat (limited to 'firmware/fx2/common/fpga_regs_standard.h')
| -rw-r--r-- | firmware/fx2/common/fpga_regs_standard.h | 300 |
1 files changed, 300 insertions, 0 deletions
diff --git a/firmware/fx2/common/fpga_regs_standard.h b/firmware/fx2/common/fpga_regs_standard.h new file mode 100644 index 000000000..7485e2bab --- /dev/null +++ b/firmware/fx2/common/fpga_regs_standard.h @@ -0,0 +1,300 @@ +/* -*- c++ -*- */ +/* + * Copyright 2003,2004,2006 Free Software Foundation, Inc. + * + * This file is part of GNU Radio + * + * GNU Radio is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3, or (at your option) + * any later version. + * + * GNU Radio is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU Radio; see the file COPYING. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, + * Boston, MA 02110-1301, USA. + */ +#ifndef INCLUDED_FPGA_REGS_STANDARD_H +#define INCLUDED_FPGA_REGS_STANDARD_H + +// Register numbers 0 to 31 are reserved for use in fpga_regs_common.h. +// Registers 64 to 79 are available for custom FPGA builds. + + +// DDC / DUC + +#define FR_INTERP_RATE 32 // [1,1024] +#define FR_DECIM_RATE 33 // [1,256] + +// DDC center freq + +#define FR_RX_FREQ_0 34 +#define FR_RX_FREQ_1 35 +#define FR_RX_FREQ_2 36 +#define FR_RX_FREQ_3 37 + +// See below for DDC Starting Phase + +// ------------------------------------------------------------------------ +// configure FPGA Rx mux +// +// 3 2 1 +// 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 +// +-----------------------+-------+-------+-------+-------+-+-----+ +// | must be zero | Q3| I3| Q2| I2| Q1| I1| Q0| I0|Z| NCH | +// +-----------------------+-------+-------+-------+-------+-+-----+ +// +// There are a maximum of 4 digital downconverters in the the FPGA. +// Each DDC has two 16-bit inputs, I and Q, and two 16-bit outputs, I & Q. +// +// DDC I inputs are specified by the two bit fields I3, I2, I1 & I0 +// +// 0 = DDC input is from ADC 0 +// 1 = DDC input is from ADC 1 +// 2 = DDC input is from ADC 2 +// 3 = DDC input is from ADC 3 +// +// If Z == 1, all DDC Q inputs are set to zero +// If Z == 0, DDC Q inputs are specified by the two bit fields Q3, Q2, Q1 & Q0 +// +// NCH specifies the number of complex channels that are sent across +// the USB. The legal values are 1, 2 or 4, corresponding to 2, 4 or +// 8 16-bit values. + +#define FR_RX_MUX 38 + +// ------------------------------------------------------------------------ +// configure FPGA Tx Mux. +// +// 3 2 1 +// 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 +// +-----------------------+-------+-------+-------+-------+-+-----+ +// | | DAC3 | DAC2 | DAC1 | DAC0 |0| NCH | +// +-----------------------------------------------+-------+-+-----+ +// +// NCH specifies the number of complex channels that are sent across +// the USB. The legal values are 1 or 2, corresponding to 2 or 4 +// 16-bit values. +// +// There are two interpolators with complex inputs and outputs. +// There are four DACs. (We use the DUC in each AD9862.) +// +// Each 4-bit DACx field specifies the source for the DAC and +// whether or not that DAC is enabled. Each subfield is coded +// like this: +// +// 3 2 1 0 +// +-+-----+ +// |E| N | +// +-+-----+ +// +// Where E is set if the DAC is enabled, and N specifies which +// interpolator output is connected to this DAC. +// +// N which interp output +// --- ------------------- +// 0 chan 0 I +// 1 chan 0 Q +// 2 chan 1 I +// 3 chan 1 Q + +#define FR_TX_MUX 39 + +// ------------------------------------------------------------------------ +// REFCLK control +// +// Control whether a reference clock is sent to the daughterboards, +// and what frequency. The refclk is sent on d'board i/o pin 0. +// +// 3 2 1 +// 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 +// +-----------------------------------------------+-+------------+ +// | Reserved (Must be zero) |E| DIVISOR | +// +-----------------------------------------------+-+------------+ + +// +// Bit 7 -- 1 turns on refclk, 0 allows IO use +// Bits 6:0 Divider value + +#define FR_TX_A_REFCLK 40 +#define FR_RX_A_REFCLK 41 +#define FR_TX_B_REFCLK 42 +#define FR_RX_B_REFCLK 43 + +# define bmFR_REFCLK_EN 0x80 +# define bmFR_REFCLK_DIVISOR_MASK 0x7f + +// ------------------------------------------------------------------------ +// DDC Starting Phase + +#define FR_RX_PHASE_0 44 +#define FR_RX_PHASE_1 45 +#define FR_RX_PHASE_2 46 +#define FR_RX_PHASE_3 47 + +// ------------------------------------------------------------------------ +// Tx data format control register +// +// 3 2 1 +// 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 +// +-------------------------------------------------------+-------+ +// | Reserved (Must be zero) | FMT | +// +-------------------------------------------------------+-------+ +// +// FMT values: + +#define FR_TX_FORMAT 48 +# define bmFR_TX_FORMAT_16_IQ 0 // 16-bit I, 16-bit Q + +// ------------------------------------------------------------------------ +// Rx data format control register +// +// 3 2 1 +// 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 +// +-----------------------------------------+-+-+---------+-------+ +// | Reserved (Must be zero) |B|Q| WIDTH | SHIFT | +// +-----------------------------------------+-+-+---------+-------+ +// +// FMT values: + +#define FR_RX_FORMAT 49 + +# define bmFR_RX_FORMAT_SHIFT_MASK (0x0f << 0) // arithmetic right shift [0, 15] +# define bmFR_RX_FORMAT_SHIFT_SHIFT 0 +# define bmFR_RX_FORMAT_WIDTH_MASK (0x1f << 4) // data width in bits [1, 16] (not all valid) +# define bmFR_RX_FORMAT_WIDTH_SHIFT 4 +# define bmFR_RX_FORMAT_WANT_Q (0x1 << 9) // deliver both I & Q, else just I +# define bmFR_RX_FORMAT_BYPASS_HB (0x1 << 10) // bypass half-band filter + +// The valid combinations currently are: +// +// B Q WIDTH SHIFT +// 0 1 16 0 +// 0 1 8 8 + + +// Possible future values of WIDTH = {4, 2, 1} +// 12 takes a bit more work, since we need to know packet alignment. + +// ------------------------------------------------------------------------ +// FIXME register numbers 50 to 63 are available + +// ------------------------------------------------------------------------ +// Registers 64 to 95 are reserved for user custom FPGA builds. +// The standard USRP software will not touch these. + +#define FR_USER_0 64 +#define FR_USER_1 65 +#define FR_USER_2 66 +#define FR_USER_3 67 +#define FR_USER_4 68 +#define FR_USER_5 69 +#define FR_USER_6 70 +#define FR_USER_7 71 +#define FR_USER_8 72 +#define FR_USER_9 73 +#define FR_USER_10 74 +#define FR_USER_11 75 +#define FR_USER_12 76 +#define FR_USER_13 77 +#define FR_USER_14 78 +#define FR_USER_15 79 +#define FR_USER_16 80 +#define FR_USER_17 81 +#define FR_USER_18 82 +#define FR_USER_19 83 +#define FR_USER_20 84 +#define FR_USER_21 85 +#define FR_USER_22 86 +#define FR_USER_23 87 +#define FR_USER_24 88 +#define FR_USER_25 89 +#define FR_USER_26 90 +#define FR_USER_27 91 +#define FR_USER_28 92 +#define FR_USER_29 93 +#define FR_USER_30 94 +#define FR_USER_31 95 + +//Registers needed for multi usrp master/slave configuration +// +//Rx Master/slave control register (FR_RX_MASTER_SLAVE = FR_USER_0) +// +#define FR_RX_MASTER_SLAVE 64 +#define bitnoFR_RX_SYNC 0 +#define bitnoFR_RX_SYNC_MASTER 1 +#define bitnoFR_RX_SYNC_SLAVE 2 +# define bmFR_RX_SYNC (1 <<bitnoFR_RX_SYNC) //1 If this is a master "sync now" and send sync to slave. + // If this is a slave "sync now" (testing purpose only) + // Sync is allmost the same as reset (clear all counters and buffers) + // except that the io outputs and settings don't get reset (otherwise it couldn't send the sync to the slave) + //0 Normal operation + +# define bmFR_RX_SYNC_MASTER (1 <<bitnoFR_RX_SYNC_MASTER) //1 This is a rx sync master, output sync_rx on rx_a_io[15] + //0 This is not a rx sync master +# define bmFR_RX_SYNC_SLAVE (1 <<bitnoFR_RX_SYNC_SLAVE) //1 This is a rx sync slave, follow sync_rx on rx_a_io[bitnoFR_RX_SYNC_INPUT_IOPIN] + //0 This is not an rx sync slave. + +//Caution The master settings will output values on the io lines. +//They inheritely enable these lines as output. If you have a daughtercard which uses these lines also as output then you will burn your usrp and daughtercard. +//If you set the slave bits then your usrp won't do anything if you don't connect a master. +// Rx Master/slave control register +// +// The way this is supposed to be used is connecting a (short) 16pin flatcable from an rx daughterboard in RXA master io_rx[8..15] to slave io_rx[8..15] on RXA of slave usrp +// This can be done with basic_rx boards or dbsrx boards +//dbsrx: connect master-J25 to slave-J25 +//basic rx: connect J25 to slave-J25 +//CAUTION: pay attention to the lineup of your connector. +//The red line (pin1) should be at the same side of the daughterboards on master and slave. +//If you turnaround the cable on one end you will burn your usrp. + +//You cannot use a 16pin flatcable if you are using FLEX400 or FLEX2400 daughterboards, since these use a lot of the io pins. +//You can still link them but you must use only a 2pin or 1pin cable +//You can also use a 2-wire link. put a 2pin header on io[15],gnd of the master RXA daughterboard and connect it to io15,gnd of the slave RXA db. +//You can use a cable like the ones found with the leds on the mainbord of a PC. +//Make sure you don't twist the cable, otherwise you connect the sync output to ground. +//To be save you could also just use a single wire from master io[15] to slave io[15], but this is not optimal for signal integrity. + + +// Since rx_io[0] can normally be used as a refclk and is not exported on all daughterboards this line +// still has the refclk function if you use the master/slave setup (it is not touched by the master/slave settings). +// The master/slave circuitry will only use io pin 15 and does not touch any of the other io pins. +#define bitnoFR_RX_SYNC_INPUT_IOPIN 15 +#define bmFR_RX_SYNC_INPUT_IOPIN (1<<bitnoFR_RX_SYNC_INPUT_IOPIN) +//TODO the output pin is still hardcoded in the verilog code, make it listen to the following define +#define bitnoFR_RX_SYNC_OUTPUT_IOPIN 15 +#define bmFR_RX_SYNC_OUTPUT_IOPIN (1<<bitnoFR_RX_SYNC_OUTPUT_IOPIN) +// ======================================================================= +// READBACK Registers +// ======================================================================= + +#define FR_RB_IO_RX_A_IO_TX_A 1 // read back a-side i/o pins +#define FR_RB_IO_RX_B_IO_TX_B 2 // read back b-side i/o pins + +// ------------------------------------------------------------------------ +// FPGA Capability register +// +// 3 2 1 +// 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 +// +-----------------------------------------------+-+-----+-+-----+ +// | Reserved (Must be zero) |T|NDUC |R|NDDC | +// +-----------------------------------------------+-+-----+-+-----+ +// +// Bottom 4-bits are Rx capabilities +// Next 4-bits are Tx capabilities + +#define FR_RB_CAPS 3 +# define bmFR_RB_CAPS_NDDC_MASK (0x7 << 0) // # of digital down converters 0,1,2,4 +# define bmFR_RB_CAPS_NDDC_SHIFT 0 +# define bmFR_RB_CAPS_RX_HAS_HALFBAND (0x1 << 3) +# define bmFR_RB_CAPS_NDUC_MASK (0x7 << 4) // # of digital up converters 0,1,2 +# define bmFR_RB_CAPS_NDUC_SHIFT 4 +# define bmFR_RB_CAPS_TX_HAS_HALFBAND (0x1 << 7) + + +#endif /* INCLUDED_FPGA_REGS_STANDARD_H */ |