Atmel AT85DVK-07 Spezifikationen PDF herunterladen (Seite 140)

140

AT85C51SND3Bx

7632A–MP3–03/06

Reset Value = 0000 0000b

Table 140. UPRST Register

UPRST (1.CAh) – USB Host Pipe Reset Register

7 6 5 4 3 2 1 0

- P6RST P5RST P4RST P3RST P2RST P1RST P0RST

Bit

Number

Bit

Mnemonic

Description

7 -

Reserved

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

6 P6RST

Pipe 6 Reset

Set this bit to 1 and reset this bit to 0 to reset the Pipe 6.

5 P5RST

Pipe 5 Reset

Set this bit to 1 and reset this bit to 0 to reset the Pipe 5.

4 P4RST

Pipe 4 Reset

Set this bit to 1 and reset this bit to 0 to reset the Pipe 4.

3 P3RST

Pipe 3 Reset

Set this bit to 1 and reset this bit to 0 to reset the Pipe 3.

2 P2RST

Pipe 2 Reset

Set this bit to 1 and reset this bit to 0 to reset the Pipe 2.

1 P1RST

Pipe 1 Reset

Set this bit to 1 and reset this bit to 0 to reset the Pipe 1.

0 P0RST

Pipe 0 Reset

Set this bit to 1 and reset this bit to 0 to reset the Pipe 0.

Table 141. UPCONX Register

UPCONX (1.CBh) – USB Host Pipe Control Register

7 6 5 4 3 2 1 0

- PFREEZE INMODE AUTOSW RSTDT PNUM DFCRDY PEN

Bit

Number

Bit

Mnemonic

Description

7 -

Reserved

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

6 PFREEZE

Pipe Freeze

Set this bit to Freeze the Pipe requests generation.

Clear this bit to enable the Pipe request generation.

This bit is set by hardware when:

- the pipe is not configured

- a STALL handshake has been received on this Pipe

- An error occurs on the Pipe (PERR = 1)

- (INRQ+1) In requests have been processed

This bit is set at 1 by hardware after a Pipe reset or a Pipe enable.

1 2 ... 135 136 137 138 139 140 141 142 143 144 145 ... 262 263

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