| Line 18... |
Line 18... |
`define TX_RESUME_START 8'h01
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`define TX_RESUME_START 8'h01
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`define TX_PACKET_START 8'h02
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`define TX_PACKET_START 8'h02
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`define TX_PACKET_STREAM 8'h03
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`define TX_PACKET_STREAM 8'h03
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`define TX_PACKET_STOP 8'h04
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`define TX_PACKET_STOP 8'h04
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`define TX_IDLE 8'h05
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`define TX_IDLE 8'h05
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`define TX_LS_KEEP_ALIVE 8'h06
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//RXStreamControlTypes
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//RXStreamControlTypes
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`define RX_PACKET_START 0
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`define RX_PACKET_START 0
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`define RX_PACKET_STREAM 1
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`define RX_PACKET_STREAM 1
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`define RX_PACKET_STOP 2
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`define RX_PACKET_STOP 2
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| Line 47... |
Line 48... |
`define DRIVE 1'b1
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`define DRIVE 1'b1
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//limits
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//limits
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`define MAX_CONSEC_SAME_BITS 4'h6
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`define MAX_CONSEC_SAME_BITS 4'h6
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`define MAX_CONSEC_SAME_BITS_PLUS1 4'h7
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`define MAX_CONSEC_SAME_BITS_PLUS1 4'h7
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`define RESUME_WAIT_TIME 10
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// RESUME_RX_WAIT_TIME defines the time period for resume detection
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`define RESUME_WAIT_TIME_MINUS1 9
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// The resume counter is incremented at the bit rate, so
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`define RESUME_LEN 20
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// RESUME_RX_WAIT_TIME = 29 corresponds to 30 * 1/12MHz = 2.5uS at full speed
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`define CONNECT_WAIT_TIME 8'd20
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// and 30 * 1/1.5MHz = 20uS at low speed, both of which are within the USB spec of
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`define DISCONNECT_WAIT_TIME 8'd20
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// 2.5uS <= resumeDetectTime <= 100uS
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`define RESUME_RX_WAIT_TIME 5'd29
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//`define RESUME_WAIT_TIME_MINUS1 9
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// 'HOST_TX_RESUME_TIME' assumes counter is incremented at low speed bit rate
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`define HOST_TX_RESUME_TIME 16'd30000 //Host sends resume for 30000 * 1/1.5MHz = 20mS
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//`define CONNECT_WAIT_TIME 8'd20
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`define CONNECT_WAIT_TIME 8'd120 //Device connect detected after 120 * 1/48MHz = 2.5uS
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//`define DISCONNECT_WAIT_TIME 8'd20
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`define DISCONNECT_WAIT_TIME 8'd120 //Device disconnect detected after 120 * 1/48MHz = 2.5uS
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//RXConnectStates
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//RXConnectStates
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`define DISCONNECT 2'b00
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`define DISCONNECT 2'b00
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`define LOW_SPEED_CONNECT 2'b01
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`define LOW_SPEED_CONNECT 2'b01
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`define FULL_SPEED_CONNECT 2'b10
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`define FULL_SPEED_CONNECT 2'b10
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