Atmel AT85DVK-07 Especificaciones descargar pdf (Pagina 115)

115

AT85C51SND3Bx

7632A–MP3–03/06

Registers

USB Device General Registers

Reset Value = 0000 0001b

Table 112. UDCON Register

UDCON (1.D9h) – USB Device General Control Register

7 6 5 4 3 2 1 0

- - - - - - RMWKUP DETACH

Bit

Number

Bit

Mnemonic

Description

7-2 -

Reserved

The value read from these bits is always 0. Do not set these bits.

1 RMWKUP

Remote Wake-up Bit

Set to send an “upstream-resume” to the host for a remote wake-up.

Cleared by hardware. Clearing by software has no effect.

See Section “Remote Wake-Up” for more details.

0 DETACH

Detach Bit

Set to physically detach de device.

Clear to reconnect the device. See Section “Detach” for more details.

Table 113. UDINT Register

UDINT (1.D8h) – USB Device Global Interrupt Register

7 6 5 4 3 2 1 0

- UPRSMI EORSMI WAKEUPI EORSTI SOFI MSOFI SUSPI

Bit

Number

Bit

Mnemonic

Description

7 -

Reserved

The value read from these bits is always 0. Do not set these bits.

6 UPRSMI

Upstream Resume Interrupt Flag

Set by hardware when the USB controller is sending a resume signal called

“Upstream Resume”. This triggers an USB interrupt if UPRSME is set.

Shall be cleared by software (USB clocks must be enabled before). Setting by

software has no effect.

5 EORSMI

End Of Resume Interrupt Flag

Set by hardware when the USB controller detects a good “End Of Resume”

signal initiated by the host. This triggers an USB interrupt if EORSME is set.

Shall be cleared by software. Setting by software has no effect.

4 WAKEUPI

Wake-up CPU Interrupt Flag

Set by hardware when the USB controller is re-activated by a filtered non-idle

signal from the lines (not by an upstream resume). This triggers an interrupt if

WAKEUPE is set.

Shall be cleared by software (USB clock inputs must be enabled before). Setting

by software has no effect.

See Section “Suspend, Wake-Up and Resume” for more details.

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Atmel AT85DVK-07 Especificaciones Pagina 115

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