AT90SCR100 datasheet(222/433 Pages) ATMEL

222 / 433 page

222

TPR0327AY–SMS–30Jan09

AT90SCR100

17.7.8

UPNUM - USB Pipe Number Register

• Bits 7..2 - Res : Reserved Bits

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

• Bits 1..0 - PNUM1..0 : Pipe Number

Select the pipe using this register. The USB Host registers ended by a X correspond then to this

number.

This number is used for the USB controller following the value of the PNUMD bit.

17.7.9

UPRST - USB Pipe Reset Register

• Bits 7..4 - Res : Reserved Bits

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

• Bit 3 - P3RST : Pipe 3 Reset

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

• Bit 2 - P2RST : Pipe 2 Reset

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

• Bit 1 - P1RST : Pipe 1 Reset

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

• Bit 0 - P0RST : Pipe 0 Reset

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

17.7.10

UPCRX - USB Pipe Control Register for Pipe X

Set UPNUM register to point to the relevant Pipe before updating the UPCRX register.

• Bit 7 - Res : Reserved

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

Bit

7654

$00A7

PNUM1

PNUM0

UPNUM

Read/write

RRRRR

R/W

Initial value

0000

0x00

Bit

7654

$00A8

----

P3RST

P2RST

P1RST

P0RST

UPRST

Read/write

RRRR

R/W

Initial value

0000

0x00

Bit

321

$00A9

PFREEZE INMODE

RSTDT

PEN

UPCRX

Read/write

R/W

Initial value

0x00

AT90SCR100 Datasheet(PDF) 222 Page - ATMEL Corporation

AT90SCR100 Datasheet(HTML) 222 Page - ATMEL Corporation

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