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SLES003A Datasheet

IC型号：
SLES003A
PDF描述：
Texas Instruments [USB Streaming Controller]
文件大小：
487.38KB
芯片厂家：
TI

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A.5.1.3 USB Interrupt Mask Register (USBIMSK 鈥?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

Type

Default

BIT

7

6

5

4

3

2

1

0

MNEMONIC

RSTR

SUSR

RESR

SOF

PSOF

SETUP

鈥?/div>

STPOW

7

RSTR

R/W

0

6

SUSR

R/W

0

NAME

Function reset

Function suspend

Function resume

Start-of-frame

Pseudo start-of-frame

Setup stage transaction

Reserved

Setup stage transaction

over-write

5

RESR

R/W

0

4

SOF

R/W

0

3

PSOF

R/W

0

2

SETUP

R/W

0

DESCRIPTION

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

reset interrupt.

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

suspend interrupt.

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

resume interrupt.

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

start-of-frame interrupt.

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.

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

setup stage transaction interrupt.

Reserved for future use

The setup stage transaction over-write interrupt mask bit is set to a 1 by the MCU to enable

the USB setup stage transaction over-write interrupt.

1

鈥?/div>

R

0

0

STPOW

R/W

0

A.5.1.4 USB Control Register (USBCTL 鈥?Address FFFCh)

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

Bit

Mnemonic

Type

Default

BIT

7

MNEMONIC

CONT

7

CONT

R/W

0

NAME

Function connect

6

FEN

R/W

0

5

RWUP

R/W

0

4

FRSTE

R/W

0

3

鈥?/div>

R

0

DESCRIPTION

The function connect bit is set to 1 by the MCU to connect the TAS1020A 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 connects the pullup on the

PCB to the TAS1020A 3.3-V supply voltage. When this bit is cleared to 0, the PUR output is in the

high-impedance state. This bit is not affected by a USB reset.

The function enable bit is set to 1 by the MCU to enable the TAS1020A device to respond to USB

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

USB reset.

The remote wake-up bit is set to 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

碌s.

The function reset enable bit is set to 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 TAS1020A device

is also active when a USB reset occurs. This bit is not affected by USB reset.

Reserved for future use.

Reserved for future use.

Reserved for future use.

This bit is used as a confirmation bit to prevent a user from spuriously clearing the SDW bit in the

MEMCFG register. This bit must be set to 1 before clearing the SDW bit to switch from normal

mode to boot mode. This bit is not affected by USB reset.

2

鈥?/div>

R

0

1

鈥?/div>

R

0

0

SDW_OK

R/W

0

6

FEN

Function enable

5

RWUP

Remote wake-up

4

FRSTE

Function reset

enable

3

2

1

0

鈥?/div>

鈥?/div>

鈥?/div>

SDW_OK

Reserved

Reserved

Reserved

SDW bit confirm

A鈥?0

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