NET2890 datasheet(41/73 Pages) ETC

41 / 73 page

Specification

NET2890 USB Interface Controller

____________________________________________________________________________________

NetChip Technology, Inc., 1999

335 Pioneer Way, Mountain View, California 94041

TEL (650) 526-1490

FAX (650) 526-1494

http://www.netchip.com

Rev 2.0, Draft 9, July 16, 1999

5.3.6 (Address 06h; IDXADDR) Index Register Address

Bits

Description

Read

Write

Default

Value

7:0

Index Register Address. This register selects which indexed register is accessed

when the IDXDATA port is read or written.

Yes

5.3.7 (Address 07h; IDXDATA) Indexed Register Data

Bits

Description

Read

Write

Default

Value

7:0

Indexed Register Data. This port provides access to the indexed data register

selected by IDXADDR.

See

Below

See

Below

See

Below

5.3.8 (Address 0Bh; PKTLENLSB) Packet Length (LSB)

Bits

Description

Read

Write

Default

Value

7:0

Packet Length LSB. This field provides the least significant bits of the length of the

last packet transferred. This field is not updated when setup packets are received,

because they have a fixed length of 8.

Yes

5.3.9 (Address 0Ch; PKTLENMSB) Packet Length (MSB)

Bits

Description

Read

Write

Default

Value

7:2

Reserved.

Yes

1:0

Packet Length MSB. This field provides the most significant bits of the length of the

last packet transferred. This field is not updated when setup packets are received,

because they have a fixed length of 8.

Yes

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