| Line 362... |
Line 362... |
// Addresses ...
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// Addresses ...
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// 0000 xxxx configuration/control registers
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// 0000 xxxx configuration/control registers
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// 001x xxxx Down-sampler taps (64 taps, 2 at a time)
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// 001x xxxx Down-sampler taps (64 taps, 2 at a time)
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// 1xxx xxxx Up-sampler taps
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// 1xxx xxxx Up-sampler taps
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// 1 xxxx xxxx xxxx xxxx xxxx Up-sampler taps
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// 1 xxxx xxxx xxxx xxxx xxxx Up-sampler taps
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wire pre_io, pre_pwm, pre_uart, pre_flctl, pre_scop;
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wire pre_io, pre_pwm, pre_uart, pre_flctl, pre_scop;
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assign io_bank = (wb_cyc)&&(wb_addr[31:5] == 27'h8);
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assign io_bank = (wb_cyc)&&(wb_addr[31:5] == 27'h8);
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assign pre_io = (~pre_flctl)&&(~pre_pwm)&&(~pre_uart)&&(~pre_scop);
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assign pre_io = (~pre_flctl)&&(~pre_pwm)&&(~pre_uart)&&(~pre_scop);
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assign io_sel = (io_bank)&&(pre_io);
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assign io_sel = (io_bank)&&(pre_io);
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assign pre_pwm = (wb_addr[4: 1]== 4'h4);
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assign pre_pwm = (wb_addr[4: 1]== 4'h4);
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| Line 471... |
Line 470... |
// samples. If we are running at 80 MHz, then divide that by the
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// samples. If we are running at 80 MHz, then divide that by the
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// sample rate to get the first parameter for the PWM device. The
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// sample rate to get the first parameter for the PWM device. The
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// second parameter is zero or one, indicating whether or not the
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// second parameter is zero or one, indicating whether or not the
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// audio rate can be adjusted (1), or whether it is fixed within the
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// audio rate can be adjusted (1), or whether it is fixed within the
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// build (0).
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// build (0).
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wbpwmaudio #(16'h270f,0,16) // 8 kHz, fixed audio rate
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`ifdef XULA25
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wbpwmaudio #(16'd1813,1) // 44.1 kHz, user adjustable
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`else
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wbpwmaudio #(16'h2710,0,16) // 8 kHz, fixed audio rate
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`endif
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pwmdev(i_clk,
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pwmdev(i_clk,
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wb_cyc, (wb_stb)&&(pwm_sel), wb_we, wb_addr[0],
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wb_cyc, (wb_stb)&&(pwm_sel), wb_we, wb_addr[0],
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wb_data, pwm_ack, pwm_stall, pwm_data, o_pwm, pwm_int);
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wb_data, pwm_ack, pwm_stall, pwm_data, o_pwm, pwm_int);
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| Line 550... |
Line 553... |
assign o_sf_cs_n = flash_cs_n;
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assign o_sf_cs_n = flash_cs_n;
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assign o_sd_cs_n = 1'b1;
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assign o_sd_cs_n = 1'b1;
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assign o_spi_sck = flash_sck;
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assign o_spi_sck = flash_sck;
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assign o_spi_mosi = flash_mosi;
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assign o_spi_mosi = flash_mosi;
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assign spi_user = 1'b0;
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assign spi_user = 1'b0;
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assign flash_grant = 1'b1;
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assign sdcard_grant= 1'b0;
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`endif // SDCARD_ACCESS && FLASH_ACCESS
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`endif // SDCARD_ACCESS && FLASH_ACCESS
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`else // FLASH_ACCESS
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`else // FLASH_ACCESS
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`ifdef SDCARD_ACCESS
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`ifdef SDCARD_ACCESS
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// SDCard access, but no flash access
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// SDCard access, but no flash access
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assign o_sf_cs_n = 1'b1;
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assign o_sf_cs_n = 1'b1;
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assign o_sd_cs_n = sdcard_cs_n;
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assign o_sd_cs_n = sdcard_cs_n;
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assign o_spi_sck = sdcard_sck;
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assign o_spi_sck = sdcard_sck;
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assign o_spi_mosi = sdcard_mosi;
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assign o_spi_mosi = sdcard_mosi;
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assign spi_user = 1'b1;
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assign spi_user = 1'b1;
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assign flash_grant = 1'b0;
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assign sdcard_grant= 1'b1;
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`else
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`else
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// No SPI access ...
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// No SPI access ...
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assign o_sf_cs_n = 1'b1;
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assign o_sf_cs_n = 1'b1;
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assign o_sd_cs_n = 1'b1;
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assign o_sd_cs_n = 1'b1;
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assign o_spi_sck = 1'b1;
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assign o_spi_sck = 1'b1;
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assign o_spi_mosi = 1'b1;
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assign o_spi_mosi = 1'b1;
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assign spi_user = 1'b0;
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assign spi_user = 1'b0;
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assign flash_grant = 1'b0;
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assign sdcard_grant= 1'b0;
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`endif // SDCARD_ACCESS, w/o FLASH_ACCESS
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`endif // SDCARD_ACCESS, w/o FLASH_ACCESS
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`endif // !FLASH_ACCESS
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`endif // !FLASH_ACCESS
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//
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//
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