cs5535 National Semiconductor Corporation, cs5535 Datasheet - Page 442

• Manufacturer Part Number: cs5535
• Description: Geode Cs5535 Companion Multi-function South Bridge
• Manufacturer: National Semiconductor Corporation

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GPIO Subsystem Register Descriptions
5.16.2.7
These registers control enabling of the pull-up on the low (GPIO[15:0]) and high (GPIO[31:16]) banks of GPIOs. If the fea-
ture bit is high, the pull-up is enabled. If the feature bit is low, the pull-up is disabled.The reset value forces all the pull-ups to
be disabled. (These registers use atomic programming, see Section 5.16.1 on page 436 for details.)
GPIO Low Bank Pull-Up Enable (GPIOL_PU_EN)
GPIO I/O Offset
Type
Reset Value
5.16.2.8
These registers control enabling of the pull-down on the low (GPIO[15:0]) and high (GPIO[31:16]) banks of GPIOs. If the
feature bit is high, the pull-down is enabled. If the feature bit is low, the pull-down is disabled.The reset value forces all the
pull-downs to be disabled. (These registers use atomic programming, see Section 5.16.1 on page 436 for details.)
GPIO Low Bank Pull-Down Enable (GPIOL_PD_EN)
GPIO I/O Offset
Type
Reset Value
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
GPIO Pull-Up Enable (GPIO[x]_PU_EN)
GPIO Pull-Down Enable (GPIO[x]_PD_EN)
18h
R/W
1000EFFFh
1Ch
R/W
EFFF1000h
GPIOH_PU_EN Register Map
GPIOH_PD_EN Register Map
GPIOL_PU_EN Register Map
GPIOL_PD_EN Register Map
(Continued)
442
GPIO High Bank Pull-Up Enable (GPIOH_PU_EN)
GPIO I/O Offset
Type
Reset Value
GPIO High Bank Pull-Down Enable (GPIOH_PD_EN)
GPIO I/O Offset
Type
Reset Value
98h
R/W
0000FFFFh
9Ch
R/W
FFFF0000h
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9
9
9
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8
8
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6
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4
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3
3
3
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2
Revision 0.8
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1
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1
0
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