Entity: usbuart_usbif

• File: usbuart_usbif.sv

Diagram

Description

Ports

Port name	Direction	Type	Description
clk_48mhz_i	input
rst_ni	input
usb_d_i	input		USB lines. Split into input vs. output and oe control signal to maintain highest level of compatibility with synthesis tools.
usb_se0_i	input
usb_d_o	output
usb_se0_o	output
usb_oe_o	output
tx_empty	input		Fifo used to communicate with system
rx_full	input
tx_read	output
rx_write	output
rx_err	output		Also becomes bit 8 to the fifo
rx_fifo_wdata	output	[7:0]
tx_fifo_rdata	input	[7:0]
status_frame_o	output	[10:0]	Status
status_host_lost_o	output
status_host_timeout_o	output
status_device_address_o	output	[6:0]
parity_o	output	[1:0]
baud_o	output	[15:0]

Signals

Name	Type	Description
ns_cnt	logic [5:0]	us_tick ticks for one cycle every us
us_tick	logic
dev_addr	logic [6:0]
out_ep_data	logic [7:0]
in_ep_current	logic [3:0]
in_ep_rollback	logic
in_ep_acked	logic
in_ep_get_addr	logic [PktW - 1:0]
in_ep_data_get	logic
out_ep_current	logic [3:0]
out_ep_rollback	logic
out_ep_acked	logic
out_ep_put_addr	logic [PktW - 1:0]
out_ep_data_put	logic
ctrl_out_ep_setup	logic
ctrl_out_ep_stall	logic
ctrl_out_ep_full	logic
ctrl_in_ep_data	logic [7:0]
ctrl_in_ep_data_done	logic
ctrl_in_ep_stall	logic
ctrl_in_ep_has_data	logic
serial_out_ep_setup	logic
serial_out_ep_stall	logic
serial_out_ep_full	logic
serial_in_ep_data	logic [7:0]
serial_in_ep_data_done	logic
serial_in_ep_stall	logic
serial_in_ep_has_data	logic
sof_valid	logic
frame_index_raw	logic [10:0]
host_presence_timer	logic [19:0]
out_ctrl_put	logic
out_ctrl_acked	logic
out_ctrl_rollback	logic
in_ctrl_get	logic
in_ctrl_acked	logic
in_ctrl_rollback	logic
out_fifo_put	logic
out_fifo_acked	logic
out_fifo_rollback	logic
in_fifo_get	logic
in_fifo_acked	logic
in_fifo_rollback	logic

Constants

Name	Type	Value	Description
MaxPktSizeByte	int unsigned	32
PktW	int unsigned	$clog2(MaxPktSizeByte)
CtrlEp	int unsigned	0
FifoEp	int unsigned	1

Processes

• unnamed: ( @(posedge clk_48mhz_i or negedge rst_ni) )

• unnamed: ( @(posedge clk_48mhz_i or negedge rst_ni) )

Instantiations

• u_usb_serial_ctrl_ep: usb_serial_ctrl_ep

• u_usb_serial_fifo_ep: usb_serial_fifo_ep

• u_usb_fs_nb_pe: usb_fs_nb_pe