TUSB3200A datasheet(72/102 Pages) TI1

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TUSB3200A

SLES018B – OCTOBER 2001 – REVISED FEBRUARY 2011

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A.5.1.3

USB Interrupt Mask Register (USBMSK

− Address FFFDh)

The USB interrupt mask register contains the interrupt mask bits used to enable or disable the generation

of interrupts based on the corresponding status bits.

BIT

MNEMONIC

RSTR

SUSR

RESR

SOF

PSOF

SETUP

—

STPOW

TYPE

R/W

DEFAULT

BIT

MNEMONIC

NAME

DESCRIPTION

RSTR

Function reset

The function reset interrupt mask bit is set to a 1 by the MCU to

enable the USB function reset interrupt.

SUSR

Function suspend

The function suspend interrupt mask bit is set to a 1 by the MCU to

enable the USB function suspend interrupt.

RESR

Function resume

The function resume interrupt mask bit is set to a 1 by the MCU to

enable the USB function resume interrupt.

SOF

Start-of-frame

The start-of-frame interrupt mask bit is set to a 1 by the MCU to

enable the USB start-of-frame interrupt.

PSOF

Pseudo start-of-frame

The pseudo start-of-frame interrupt mask bit is set to a 1 by the MCU

to enable the USB pseudo start-of-frame interrupt.

SETUP

Setup stage transaction

The setup stage transaction interrupt mask bit is set to a 1 by the

MCU to enable the USB setup stage transaction interrupt.

—

Reserved

Reserved for future use

STPOW

Setup stage transaction

The setup stage transaction over-write interrupt mask bit is set to a 1

overwrite

by the MCU to enable the USB setup stage transaction overwrite

interrupt.

A.5.1.4

USB Control Register (USBCTL

− Address FFFCh)

The USB control register contains various control bits used for USB operations.

BIT

MNEMONIC

CONT

FEN

RWUP

FRSTE

—

TYPE

R/W

DEFAULT

BIT

MNEMONIC

NAME

DESCRIPTION

CONT

Function connect

The function connect bit is set to a 1 by the MCU to connect the

TUSB3200A device to the USB. As a result of connecting to the USB,

the host PC should enumerate the function. When this bit is set, the

USB data plus pullup resistor (PUR) output signal is enabled, which

will connect the pullup on the PCB to the TUSB3200A 3.3-V supply

voltage. When this bit is cleared to a 0, the PUR output is in the

3-state mode. This bit is not affected by a USB reset.

FEN

Function enable

The function enable bit is set to a 1 by the MCU to enable the

TUSB3200A device to respond to USB transactions. If this bit is

cleared to a 0, the UBM ignores all USB transactions. This bit is

cleared by a USB reset.

RWUP

Remote wake-up

The remote wake-up bit is set to a 1 by the MCU to request the

suspend/resume logic to generate resume signaling upstream on the

USB. This bit is used to exit a USB low-power suspend state when a

remote wake-up event occurs. After initiating the resume signaling by

setting this bit, the MCU should clear this bit within 2.5 µs.

FRSTE

Function reset enable

The function reset enable bit is set to a 1 by the MCU to enable the

USB reset to reset all internal logic including the MCU. However, the

shadow the ROM (SDW) and the USB function connect (CONT) bits

will not be reset. When this bit is set, the reset output (RSTO) signal

from the TUSB3200A device will also be active when a USB reset

occurs. This bit is not affected by USB reset.

3:0

—

Reserved

Reserved for future use

MCU Memory and Memory-Mapped Registers

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