Entity: usb_fs_nb_pe

• File: usb_fs_nb_pe.sv

Diagram

Description

Generics

Generic name	Type	Value	Description
NumOutEps	int unsigned	2
NumInEps	int unsigned	2
MaxPktSizeByte	int unsigned	32
PktW	int unsigned	$clog2(MaxPktSizeByte)	derived parameter

Ports

Port name	Direction	Type	Description
clk_48mhz_i	input
rst_ni	input		Async. reset, active low
link_reset_i	input		USB reset, sync to 48 MHz, active high
dev_addr_i	input	[6:0]
cfg_eop_single_bit_i	input		1: detect a single SE0 bit as EOP
cfg_rx_differential_i	input		1: use differential rx data on usb_d_i
tx_osc_test_mode_i	input		Oscillator test mode (constantly output JK)
data_toggle_clear_i	input	[NumOutEps-1:0]	Clear the data toggles for an EP
out_ep_current_o	output	[3:0]	Other signals address to this ep
out_ep_data_put_o	output		put the data (put addr advances after)
out_ep_put_addr_o	output	[PktW - 1:0]	Offset to put data (0..pktlen)
out_ep_data_o	output	[7:0]
out_ep_newpkt_o	output		New OUT pkt start (with in_ep_current_o update)
out_ep_acked_o	output		good termination, device has acked
out_ep_rollback_o	output		bad termination, discard data
out_ep_setup_o	output	[NumOutEps-1:0]
out_ep_full_i	input	[NumOutEps-1:0]	Cannot accept data
out_ep_stall_i	input	[NumOutEps-1:0]	Stalled
out_ep_iso_i	input	[NumOutEps-1:0]	Configure endpoint in isochronous mode
in_ep_current_o	output	[3:0]	Other signals addressed to this ep
in_ep_rollback_o	output		Bad termination, rollback transaction
in_ep_xfr_end_o	output		good termination, transaction complete
in_ep_get_addr_o	output	[PktW - 1:0]	Offset requested (0..pktlen)
in_ep_data_get_o	output		Accept data (get_addr advances too)
in_ep_newpkt_o	output		New IN pkt start (with in_ep_current_o update)
in_ep_stall_i	input	[NumInEps-1:0]	Endpoint in a stall state
in_ep_has_data_i	input	[NumInEps-1:0]	Endpoint has data to supply
in_ep_data_i	input	[7:0]	Data for current get_addr
in_ep_data_done_i	input	[NumInEps-1:0]	Set when out of data
in_ep_iso_i	input	[NumInEps-1:0]	Configure endpoint in isochronous mode
sof_valid_o	output		sof interface
frame_index_o	output	[10:0]
rx_jjj_det_o	output		RX line status
rx_crc_err_o	output		RX errors
rx_pid_err_o	output
rx_bitstuff_err_o	output
usb_d_i	input		///////////////////////////////////// USB RX Interface (synchronous) // /////////////////////////////////////
usb_dp_i	input
usb_dn_i	input
usb_d_o	output		///////////////////////////////////// USB TX Interface (synchronous) // /////////////////////////////////////
usb_se0_o	output
usb_oe_o	output

Signals

Name	Type	Description
bit_strobe	logic	rx interface
rx_pkt_start	logic
rx_pkt_end	logic
rx_pid	logic [3:0]
rx_addr	logic [6:0]
rx_endp	logic [3:0]
rx_frame_num	logic [10:0]
rx_data_put	logic
rx_data	logic [7:0]
rx_pkt_valid	logic
in_tx_pkt_start	logic	tx mux
in_tx_pid	logic [3:0]
out_tx_pkt_start	logic
out_tx_pid	logic [3:0]
tx_pkt_start	logic	tx interface
tx_pkt_end	logic
tx_pid	logic [3:0]
tx_data_avail	logic
tx_data_get	logic
tx_data	logic [7:0]
usb_oe	logic

Constants

Name	Type	Value	Description
PktW	int unsigned	$clog2(MaxPktSizeByte)	derived parameter

Instantiations

• u_usb_fs_nb_in_pe: usb_fs_nb_in_pe

• u_usb_fs_nb_out_pe: usb_fs_nb_out_pe

• u_usb_fs_rx: usb_fs_rx

• u_usb_fs_tx_mux: usb_fs_tx_mux

• u_usb_fs_tx: usb_fs_tx