Uss-720 setup register, Table 29 . uss-720 setup register, Ieee 1284 port – Lucent Technologies USS-720 User Manual
Page 48: Instant usb, Ieee
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.