Rainbow-electronics AT89C5132 Bedienungsanleitung PDF herunterladen (Seite 78)

AT8xC5132

4173A–8051–08/02

Table 79. UEPRST Register

UEPRST (S:D5h) – USB Endpoint FIFO Reset Register

Reset Value = 0000 0000b

Table 80. UEPINT Register

UEPINT (S:F8h Read-only) – USB Endpoint Interrupt Register

Reset Value = 0000 0000b

76543210

----EP3RSTEP2RSTEP1RSTEP0RST

Bit

Number

Bit

Mnemonic Description

7 - 4 -

Reserved

The values read from these Bits are always 0. Do not set these Bits.

3 EP3RST

Endpoint 3 FIFO Reset

Set and clear to reset the endpoint 3 FIFO prior to any other operation, upon

hardware reset or when an USB bus reset has been received.

2 EP2RST

Endpoint 2 FIFO Reset

Set and clear to reset the endpoint 2 FIFO prior to any other operation, upon

hardware reset or when an USB bus reset has been received.

1 EP1RST

Endpoint 1 FIFO Reset

Set and clear to reset the endpoint 1 FIFO prior to any other operation, upon

hardware reset or when an USB bus reset has been received.

0 EP0RST

Endpoint 0 FIFO Reset

Set and clear to reset the endpoint 0 FIFO prior to any other operation, upon

hardware reset or when an USB bus reset has been received.

76543210

----EP3INTEP2INTEP1INTEP0INT

Bit

Number

Bit

Mnemonic Description

7 - 4 -

Reserved

The values read from these Bits are always 0. Do not set these Bits.

3EP3INT

Endpoint 3 Interrupt Flag

Set by hardware when an interrupt is triggered in UEPSTAX and the endpoint 3

interrupt is enabled in UEPIEN.

Must be cleared by software.

2EP2INT

Endpoint 2 Interrupt Flag

Set by hardware when an interrupt is triggered in UEPSTAX and the endpoint 2

interrupt is enabled in UEPIEN.

Must be cleared by software.

1EP1INT

Endpoint 1 Interrupt Flag

Set by hardware when an interrupt is triggered in UEPSTAX and the endpoint 1

interrupt is enabled in UEPIEN.

Must be cleared by software.

0EP0INT

Endpoint 0 Interrupt Flag

Set by hardware when an interrupt is triggered in UEPSTAX and the endpoint 0

interrupt is enabled in UEPIEN.

Must be cleared by software.

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