diff options
Diffstat (limited to 'firmware/fx2/common/fpga_regs_common.v')
| -rw-r--r-- | firmware/fx2/common/fpga_regs_common.v | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/firmware/fx2/common/fpga_regs_common.v b/firmware/fx2/common/fpga_regs_common.v new file mode 100644 index 000000000..8035d8565 --- /dev/null +++ b/firmware/fx2/common/fpga_regs_common.v @@ -0,0 +1,117 @@ +// +// This file is machine generated from ./fpga_regs_common.h +// Do not edit by hand; your edits will be overwritten. +// + +// This file defines registers common to all FPGA configurations. +// Registers 0 to 31 are reserved for use in this file. + + +// The FPGA needs to know the rate that samples are coming from and +// going to the A/D's and D/A's. div = 128e6 / sample_rate + +`define FR_TX_SAMPLE_RATE_DIV 7'd0 +`define FR_RX_SAMPLE_RATE_DIV 7'd1 + +// 2 and 3 are defined in the ATR section + +`define FR_MASTER_CTRL 7'd4 // master enable and reset controls + +// i/o direction registers for pins that go to daughterboards. +// Setting the bit makes it an output from the FPGA to the d'board. +// top 16 is mask, low 16 is value + +`define FR_OE_0 7'd5 // slot 0 +`define FR_OE_1 7'd6 +`define FR_OE_2 7'd7 +`define FR_OE_3 7'd8 + +// i/o registers for pins that go to daughterboards. +// top 16 is a mask, low 16 is value + +`define FR_IO_0 7'd9 // slot 0 +`define FR_IO_1 7'd10 +`define FR_IO_2 7'd11 +`define FR_IO_3 7'd12 + +`define FR_MODE 7'd13 + + +// If the corresponding bit is set, internal FPGA debug circuitry +// controls the i/o pins for the associated bank of daughterboard +// i/o pins. Typically used for debugging FPGA designs. + +`define FR_DEBUG_EN 7'd14 + + +// If the corresponding bit is set, enable the automatic DC +// offset correction control loop. +// +// The 4 low bits are significant: +// +// ADC0 = (1 << 0) +// ADC1 = (1 << 1) +// ADC2 = (1 << 2) +// ADC3 = (1 << 3) +// +// This control loop works if the attached daugherboard blocks DC. +// Currently all daughterboards do block DC. This includes: +// basic rx, dbs_rx, tv_rx, flex_xxx_rx. + +`define FR_DC_OFFSET_CL_EN 7'd15 // DC Offset Control Loop Enable + + +// offset corrections for ADC's and DAC's (2's complement) + +`define FR_ADC_OFFSET_0 7'd16 +`define FR_ADC_OFFSET_1 7'd17 +`define FR_ADC_OFFSET_2 7'd18 +`define FR_ADC_OFFSET_3 7'd19 + + +// ------------------------------------------------------------------------ +// Automatic Transmit/Receive switching +// +// If automatic transmit/receive (ATR) switching is enabled in the +// FR_ATR_CTL register, the presence or absence of data in the FPGA +// transmit fifo selects between two sets of values for each of the 4 +// banks of daughterboard i/o pins. +// +// Each daughterboard slot has 3 16-bit registers associated with it: +// FR_ATR_MASK_*, FR_ATR_TXVAL_* and FR_ATR_RXVAL_* +// +// FR_ATR_MASK_{0,1,2,3}: +// +// These registers determine which of the daugherboard i/o pins are +// affected by ATR switching. If a bit in the mask is set, the +// corresponding i/o bit is controlled by ATR, else it's output +// value comes from the normal i/o pin output register: +// FR_IO_{0,1,2,3}. +// +// FR_ATR_TXVAL_{0,1,2,3}: +// FR_ATR_RXVAL_{0,1,2,3}: +// +// If the Tx fifo contains data, then the bits from TXVAL that are +// selected by MASK are output. Otherwise, the bits from RXVAL that +// are selected by MASK are output. + +`define FR_ATR_MASK_0 7'd20 // slot 0 +`define FR_ATR_TXVAL_0 7'd21 +`define FR_ATR_RXVAL_0 7'd22 + +`define FR_ATR_MASK_1 7'd23 // slot 1 +`define FR_ATR_TXVAL_1 7'd24 +`define FR_ATR_RXVAL_1 7'd25 + +`define FR_ATR_MASK_2 7'd26 // slot 2 +`define FR_ATR_TXVAL_2 7'd27 +`define FR_ATR_RXVAL_2 7'd28 + +`define FR_ATR_MASK_3 7'd29 // slot 3 +`define FR_ATR_TXVAL_3 7'd30 +`define FR_ATR_RXVAL_3 7'd31 + +// Clock ticks to delay rising and falling edge of T/R signal +`define FR_ATR_TX_DELAY 7'd2 +`define FR_ATR_RX_DELAY 7'd3 + |