//-----------------------------------------------------------------------------\r
\r
`include "lo_read.v"\r
+`include "lo_passthru.v"\r
`include "lo_simulate.v"\r
`include "hi_read_tx.v"\r
`include "hi_read_rx_xcorr.v"\r
lo_is_125khz, divisor\r
);\r
\r
+lo_passthru lp(\r
+ pck0, ck_1356meg, ck_1356megb,\r
+ lp_pwr_lo, lp_pwr_hi, lp_pwr_oe1, lp_pwr_oe2, lp_pwr_oe3, lp_pwr_oe4,\r
+ adc_d, lp_adc_clk,\r
+ lp_ssp_frame, lp_ssp_din, ssp_dout, lp_ssp_clk,\r
+ cross_hi, cross_lo,\r
+ lp_dbg\r
+);\r
+\r
lo_simulate ls(\r
pck0, ck_1356meg, ck_1356megb,\r
ls_pwr_lo, ls_pwr_hi, ls_pwr_oe1, ls_pwr_oe2, ls_pwr_oe3, ls_pwr_oe4,\r
// 011 -- HF reader, receiving from tag, correlating as it goes; frequency selectable\r
// 100 -- HF simulated tag\r
// 101 -- HF ISO14443-A\r
-// 110 -- unused\r
+// 110 -- LF passthrough\r
// 111 -- everything off\r
\r
-mux8 mux_ssp_clk (major_mode, ssp_clk, lr_ssp_clk, ls_ssp_clk, ht_ssp_clk, hrxc_ssp_clk, hs_ssp_clk, hisn_ssp_clk, 1'b0, 1'b0);\r
-mux8 mux_ssp_din (major_mode, ssp_din, lr_ssp_din, ls_ssp_din, ht_ssp_din, hrxc_ssp_din, hs_ssp_din, hisn_ssp_din, 1'b0, 1'b0);\r
-mux8 mux_ssp_frame (major_mode, ssp_frame, lr_ssp_frame, ls_ssp_frame, ht_ssp_frame, hrxc_ssp_frame, hs_ssp_frame, hisn_ssp_frame, 1'b0, 1'b0);\r
-mux8 mux_pwr_oe1 (major_mode, pwr_oe1, lr_pwr_oe1, ls_pwr_oe1, ht_pwr_oe1, hrxc_pwr_oe1, hs_pwr_oe1, hisn_pwr_oe1, 1'b0, 1'b0);\r
-mux8 mux_pwr_oe2 (major_mode, pwr_oe2, lr_pwr_oe2, ls_pwr_oe2, ht_pwr_oe2, hrxc_pwr_oe2, hs_pwr_oe2, hisn_pwr_oe2, 1'b0, 1'b0);\r
-mux8 mux_pwr_oe3 (major_mode, pwr_oe3, lr_pwr_oe3, ls_pwr_oe3, ht_pwr_oe3, hrxc_pwr_oe3, hs_pwr_oe3, hisn_pwr_oe3, 1'b0, 1'b0);\r
-mux8 mux_pwr_oe4 (major_mode, pwr_oe4, lr_pwr_oe4, ls_pwr_oe4, ht_pwr_oe4, hrxc_pwr_oe4, hs_pwr_oe4, hisn_pwr_oe4, 1'b0, 1'b0);\r
-mux8 mux_pwr_lo (major_mode, pwr_lo, lr_pwr_lo, ls_pwr_lo, ht_pwr_lo, hrxc_pwr_lo, hs_pwr_lo, hisn_pwr_lo, 1'b0, 1'b0);\r
-mux8 mux_pwr_hi (major_mode, pwr_hi, lr_pwr_hi, ls_pwr_hi, ht_pwr_hi, hrxc_pwr_hi, hs_pwr_hi, hisn_pwr_hi, 1'b0, 1'b0);\r
-mux8 mux_adc_clk (major_mode, adc_clk, lr_adc_clk, ls_adc_clk, ht_adc_clk, hrxc_adc_clk, hs_adc_clk, hisn_adc_clk, 1'b0, 1'b0);\r
-mux8 mux_dbg (major_mode, dbg, lr_dbg, ls_dbg, ht_dbg, hrxc_dbg, hs_dbg, hisn_dbg, 1'b0, 1'b0);\r
+mux8 mux_ssp_clk (major_mode, ssp_clk, lr_ssp_clk, ls_ssp_clk, ht_ssp_clk, hrxc_ssp_clk, hs_ssp_clk, hisn_ssp_clk, lp_ssp_clk, 1'b0);\r
+mux8 mux_ssp_din (major_mode, ssp_din, lr_ssp_din, ls_ssp_din, ht_ssp_din, hrxc_ssp_din, hs_ssp_din, hisn_ssp_din, lp_ssp_din, 1'b0);\r
+mux8 mux_ssp_frame (major_mode, ssp_frame, lr_ssp_frame, ls_ssp_frame, ht_ssp_frame, hrxc_ssp_frame, hs_ssp_frame, hisn_ssp_frame, lp_ssp_frame, 1'b0);\r
+mux8 mux_pwr_oe1 (major_mode, pwr_oe1, lr_pwr_oe1, ls_pwr_oe1, ht_pwr_oe1, hrxc_pwr_oe1, hs_pwr_oe1, hisn_pwr_oe1, lp_pwr_oe1, 1'b0);\r
+mux8 mux_pwr_oe2 (major_mode, pwr_oe2, lr_pwr_oe2, ls_pwr_oe2, ht_pwr_oe2, hrxc_pwr_oe2, hs_pwr_oe2, hisn_pwr_oe2, lp_pwr_oe2, 1'b0);\r
+mux8 mux_pwr_oe3 (major_mode, pwr_oe3, lr_pwr_oe3, ls_pwr_oe3, ht_pwr_oe3, hrxc_pwr_oe3, hs_pwr_oe3, hisn_pwr_oe3, lp_pwr_oe3, 1'b0);\r
+mux8 mux_pwr_oe4 (major_mode, pwr_oe4, lr_pwr_oe4, ls_pwr_oe4, ht_pwr_oe4, hrxc_pwr_oe4, hs_pwr_oe4, hisn_pwr_oe4, lp_pwr_oe4, 1'b0);\r
+mux8 mux_pwr_lo (major_mode, pwr_lo, lr_pwr_lo, ls_pwr_lo, ht_pwr_lo, hrxc_pwr_lo, hs_pwr_lo, hisn_pwr_lo, lp_pwr_lo, 1'b0);\r
+mux8 mux_pwr_hi (major_mode, pwr_hi, lr_pwr_hi, ls_pwr_hi, ht_pwr_hi, hrxc_pwr_hi, hs_pwr_hi, hisn_pwr_hi, lp_pwr_hi, 1'b0);\r
+mux8 mux_adc_clk (major_mode, adc_clk, lr_adc_clk, ls_adc_clk, ht_adc_clk, hrxc_adc_clk, hs_adc_clk, hisn_adc_clk, lp_adc_clk, 1'b0);\r
+mux8 mux_dbg (major_mode, dbg, lr_dbg, ls_dbg, ht_dbg, hrxc_dbg, hs_dbg, hisn_dbg, lp_dbg, 1'b0);\r
\r
// In all modes, let the ADC's outputs be enabled.\r
assign adc_noe = 1'b0;\r
--- /dev/null
+//-----------------------------------------------------------------------------\r
+// For reading TI tags, we need to place the FPGA in pass through mode\r
+// and pass everything through to the ARM\r
+//-----------------------------------------------------------------------------\r
+\r
+module lo_passthru(\r
+ pck0, ck_1356meg, ck_1356megb,\r
+ pwr_lo, pwr_hi, pwr_oe1, pwr_oe2, pwr_oe3, pwr_oe4,\r
+ adc_d, adc_clk,\r
+ ssp_frame, ssp_din, ssp_dout, ssp_clk,\r
+ cross_hi, cross_lo,\r
+ dbg\r
+);\r
+ input pck0, ck_1356meg, ck_1356megb;\r
+ output pwr_lo, pwr_hi, pwr_oe1, pwr_oe2, pwr_oe3, pwr_oe4;\r
+ input [7:0] adc_d;\r
+ output adc_clk;\r
+ input ssp_dout;\r
+ output ssp_frame, ssp_din, ssp_clk;\r
+ input cross_hi, cross_lo;\r
+ output dbg;\r
+\r
+// No logic, straight through.\r
+\r
+assign pwr_oe3 = 1'b0;\r
+assign pwr_oe1 = 1'b1;\r
+assign pwr_oe2 = 1'b1;\r
+assign pwr_oe4 = 1'b1;\r
+assign pwr_lo = 1'b0;\r
+assign pwr_hi = 1'b0;\r
+assign adc_clk = 1'b0;\r
+assign ssp_din = cross_lo;\r
+assign dbg = cross_lo;\r
+\r
+endmodule\r