/*
 *       sgmii_params.v
 *
 *   Copyright 2018, 2019, 2020 Mind Chasers Inc.
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 *
 *	function: SGMII Related Parameters
 *
 */


/* SGMII Speed Bits [11:10]	*/

localparam	SGMII_SPEED_10MBIT	= 2'b00,
			SGMII_SPEED_100MBIT = 2'b01,
			SGMII_SPEED_1GBIT = 2'b10,
			SGMII_SPEED_RSVD = 2'b11,
			SGMII_SPEED_AN = 2'b11;	

/* 
 *	Notes about K Codes:
 *		Start of Packet: /S/, K27.7, 0xFB
 *		End of Packet: /T/, K23.7, 0xF7
 *
 */
localparam 	D2_2	=	8'h42,
			D2_5	=	8'ha2,
			D5_6	= 	8'hC5,
			D10_2	=	8'h4a,
			D16_2	=	8'h50,
			D21_5	=	8'hb5,		// used in a Config Code Group
			
			/* Note that these are only K codes if the k bit is asserted */
			K23_7	= 	8'hf7,		// 	/R/ Carrier Extend
			K27_7	= 	8'hfb,		// 	/S/	Start_of_Packet
			K28_0	=	8'h1c,
			K28_1	= 	8'h3c,
			K28_2	=	8'h5c,
			K28_3	=	8'h7c,
			K28_4	= 	8'h9c,
			K28_5	=	8'hbc,
			K28_6	= 	8'hdc,
			K29_7	=	8'hfd,		// 	/T/	End_of_Packet
			K_ERROR =	8'hee;