Usb Receive Byte Count Endpoint 0 Register (Usbcount0), Offset 0X108; Usb Type Endpoint 0 Register (Usbtype0), Offset 0X10A; Usb Receive Byte Count Endpoint 0 Register (Usbcount0); Usb Type Endpoint 0 Register (Usbtype0) - Texas Instruments Concerto F28M35 Series Technical Reference Manual

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18.5.31 USB Receive Byte Count Endpoint 0 Register (USBCOUNT0), offset 0x108

The USB receive byte count endpoint 0 8-bit read-only register (USBCOUNT0) indicates the number of

received data bytes in the endpoint 0 FIFO. The value returned changes as the contents of the FIFO

change and is only valid while the RXRDY bit is set.

OTG A or Host

USBCOUNT0 is shown in

Figure 18-38. USB Receive Byte Count Endpoint 0 Register (USBCOUNT0)

LEGEND: R/W = Read/Write; -n = value after reset

Table 18-41. USB Receive Byte Count Endpoint 0 Register (USBCOUNT0) Field Descriptions

The USB type endpoint 0 8-bit register (USBTYPE0) must be written with the operating speed of the

targeted Device being communicated with using endpoint 0.

OTG A or Host

USBTYPE0 is shown in

LEGEND: R/W = Read/Write; -n = value after reset

Table 18-42. USB Type Endpoint 0 Register (USBTYPE0) Field Descriptions

SPRUH22I – April 2012 – Revised November 2019

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OTG B or Device

Figure 18-38

and described in

FIFO Count. COUNT is a read-only value that indicates the number of received data bytes in the

endpoint 0 FIFO.

Figure 18-39

and described in

Figure 18-39. USB Type Endpoint 0 Register (USBTYPE0)

Operating Speed specifies the operating speed of the target Device. If selected, the target is assumed

to have the same connection speed as the USB controller.

M3 Universal Serial Bus (USB) Controller

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