Atmel AT85DVK-07 Especificaciones descargar pdf (Pagina 136)

136

AT85C51SND3Bx

7632A–MP3–03/06

Registers

General USB Host Registers

Reset Value = 0000 0000b

Table 132. UHCON Register

UHCON (1.D9h) – USB Host General Control Register

7 6 5 4 3 2 1 0

- - - - - RESUME RESET SOFE

Bit

Number

Bit

Mnemonic

Description

7-3 -

Reserved

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

2 RESUME

Send USB Resume

Set this bit to generate a USB Resume on the USB bus.

Cleared by hardware when the USB Resume has been sent. Clearing by

software has no effect.

1 RESET

Send USB Reset

Set this bit to generate a USB Reset on the USB bus.

Cleared by hardware when the USB Reset has been sent. Clearing by software

has no effect.

Refer to the USB reset section for more details.

0 SOFE

Start Of Frame Generation Enable

Set this bit to generate SOF on the USB bus.

Clear this bit to disable the SOF generation and to leave the USB bus in Idle

state.

Table 133. UHINT Register

UHINT (1.D8h) – USB Host General Interrupt Register

7 6 5 4 3 2 1 0

- HWUP HSOF RXRSMI RSMEDI RSTI DDISCI DCONNI

Bit

Number

Bit

Mnemonic

Description

7 -

Reserved

The value read from this bit is always 0. Do not set this bit.

6 HWUP

Host Wake-Up Interrupt

Set by hardware when a non-idle state is detected on the USB bus.

Shall be clear by software to acknowledge the interrupt. Setting by software has

no effect.

5 HSOFI

Host Start Of Frame Interrupt

Set by hardware when a SOF is issued by the Host controller. This triggers a

USB interrupt when HSOFE is set.

Shall be cleared by software to acknowledge the interrupt. Setting by software

has no effect.

1 2 ... 131 132 133 134 135 136 137 138 139 140 141 ... 262 263

Comentarios a estos manuales

Sin comentarios

Atmel AT85DVK-07 Especificaciones Pagina 136

Comentarios a estos manuales

Relacionado con productos y manuales para Redes Atmel AT85DVK-07