Uss-720 setup register, Table 29 . uss-720 setup register, Ieee 1284 port – Lucent Technologies USS-720 User Manual

Page 48: Instant usb, Ieee

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5-22

Lucent Technologies Inc.

USS-720

Instant USB

Preliminary Data Sheet, Rev. 5

USB-to-

IEEE

1284 Bridge

September 1999

13

IEEE 1284 Port

(continued)

USS-720 Setup Register

Table 29. USS-720 Setup Register

USS-720 Setup Register

Address: 8

Bit

7

6

5

4

3

2

1

0

Symbol

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Filter Software

Override

Filter

Enable

Access

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

Default

0

0

0

0

0

0

0

1

Bit

Symbol

Bit Description

7

Reserved

Reserved.

6

Reserved

Reserved.

5

Reserved

Reserved.

4

Reserved

Reserved.

3

Reserved

Reserved.

2

Reserved

Reserved.

1

Filter Software Override

Filter Software Override. When this bit is set, software can control the
digital filtering of incoming parallel port signals with the Filter Enable bit.
When clear, filters are controlled by the pull-up or pull-down stage of the
SUSPEND pin. (See Filter Bypass Mode.)

0

Filter Enable

Filter Enable. Controls digital filtering of incoming parallel port signals
when the Filter Software override bit is set. Setting to 1 enables filtering;
clearing this bit disables filtering.

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