vsc055xkm-01 Maxim Integrated Products, Inc., vsc055xkm-01 Datasheet - Page 129
vsc055xkm-01
Manufacturer Part Number
vsc055xkm-01
Description
Enhanced I?c Backplane Controller
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.VSC055XKM-01.pdf
(133 pages)
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VSC055-01
Data Sheet
Table 30. I/O Ports (continued)
Pin Name
P4.7
P4.6
P4.5
P4.4
P4.3
P4.2
P4.1
P4.0
P5.7
P5.6
P5.5
P5.4
P5.3
P5.2
P5.1
P5.0
P6.7
P6.6
P6.5
P6.4
P6.3
P6.2
P6.1
P6.0
Pin Number
57
58
59
60
61
62
63
64
46
47
48
49
50
51
55
56
36
37
38
39
42
43
44
45
Bidirectional
Bidirectional
Bidirectional
I/O
129 of 133
Description
I/O Port 4, Bypass I/Os
Port 4 is a shared 8-bit bidirectional I/O port that can be used as a
general-purpose I/O port or as Port Bypass control. The user can
select between an input, totem pole output, or open-drain or open-
source output. Capability to detect input edge changes and select
various output flashing rates is also available.
Through control register setup, four 2-bit portions of this port can be
dedicated to the control of a combination of PBC/CRU/SDU functions.
Any combination of port bypass control functions can be enabled with
the remaining I/O pins used for general-purpose functions.
Through bit control register setup, each odd-numbered bit of this port
can be enabled as an output, which on a pair-by-pair basis, reflects the
current state of each even-numbered bit of this port. Individual control
is provided that allows programming each output as a totem pole or an
open-drain/source driver.
I/O Port 5, Bypass I/Os
Port 5 is a shared 8-bit bidirectional I/O port that can be used as a
general-purpose I/O port or as Port Bypass control. The user can
select between an input, totem pole output, or open-drain or open-
source output. Capability to detect input edge changes and select
various output flashing rates is also available.
Through control register setup, four 2-bit portions of this port can be
dedicated to the control of a combination of PBC/CRU/SDU functions.
Any combination of port bypass control functions can be enabled with
the remaining I/O pins used for general-purpose functions.
Through bit control register setup, each odd bit of this port can be
enabled as an output which on a pair by pair basis, reflects the current
state of each even bit of this port. Individual control is provided that
allows programming each output as a totem pole or an open-drain/
source driver.
I/O Port 6, Bypass I/Os
Port 6 is a shared 8-bit bidirectional I/O port that can be used as a
general-purpose I/O port or as Port Bypass control. The user can
select between an input, totem pole output, or open-drain or open-
source output. Capability to detect input edge changes and select
various output flashing rates is also available.
Through control register setup, four 2-bit portions of this port can be
dedicated to the control of a combination of PBC/CRU/SDU functions.
Any combination of port bypass control functions can be enabled with
the remaining I/O pins used for general-purpose functions.
Through bit control register setup, each odd-numbered bit of this port
can be enabled as an output, which on a pair-by-pair basis, reflects the
current state of each even-numbered bit of this port. Individual control
is provided that allows programming each output as a totem pole or an
open-drain/source driver.
January 2008
Revision 4.1
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