diff options
Diffstat (limited to 'eth/rtl/verilog/flow_ctrl_tx.v')
| -rw-r--r-- | eth/rtl/verilog/flow_ctrl_tx.v | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/eth/rtl/verilog/flow_ctrl_tx.v b/eth/rtl/verilog/flow_ctrl_tx.v deleted file mode 100644 index 9f7556de4..000000000 --- a/eth/rtl/verilog/flow_ctrl_tx.v +++ /dev/null @@ -1,36 +0,0 @@ -
-// TX side of flow control -- when other side sends PAUSE, we wait
-
-module flow_ctrl_tx
- (input rst,
- input tx_clk,
- //host processor
- input tx_pause_en,
- // From MAC_rx_ctrl
- input [15:0] pause_quanta,
- input pause_quanta_val,
- // MAC_tx_ctrl
- output pause_apply,
- input pause_quanta_sub);
-
- // ******************************************************************************
- // Inhibit our TX from transmitting because they sent us a PAUSE frame
- // ******************************************************************************
-
- reg [15:0] pause_quanta_counter;
- reg pqval_d1, pqval_d2;
-
- always @(posedge tx_clk) pqval_d1 <= pause_quanta_val;
- always @(posedge tx_clk) pqval_d2 <= pqval_d1;
-
- always @ (posedge tx_clk or posedge rst)
- if (rst)
- pause_quanta_counter <= 0;
- else if (pqval_d1 & ~pqval_d2)
- pause_quanta_counter <= pause_quanta;
- else if((pause_quanta_counter!=0) & pause_quanta_sub)
- pause_quanta_counter <= pause_quanta_counter - 1;
-
- assign pause_apply = tx_pause_en & (pause_quanta_counter != 0);
-
-endmodule // flow_ctrl
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