cs5535 National Semiconductor Corporation, cs5535 Datasheet - Page 438

• 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 GPIO Low/High Bank Feature Bit Registers
5.16.2.1
These registers control the output value for the low (GPIO[15:0]) and high (GPIO[31:16]) banks of GPIOs. If the feature bit
is high, the output value = 1. If the feature bit is low, the output value = 0. The reset value forces all the output values to be
initially set to 0. (These registers use atomic programming, see Section 5.16.1 on page 436 for details.)
If OUT_AUX1 (GPIO I/O Offset 10h/90h) and/or OUT_AUX2 (GPIO I/O Offset 14h/94h) are selected, then their value over-
rides the OUT_VAL settings. See Table 2-8 "GPIO Options" on page 42 for AUX programming details.
GPIO Low Bank Output Value (GPIOL_OUT_VAL)
GPIO I/O Offset
Type
Reset Value
5.16.2.2
These registers control the output enable for the low (GPIO[15:0]) and high (GPIO[31:16]) banks of GPIOs. If the feature bit
high, the output is enabled. If the feature bit is low, the output is disabled. The reset value forces all the outputs to be dis-
abled. (These registers use atomic programming, see Section 5.16.1 on page 436 for details.)
GPIO Low Bank Output Enable (GPIOL_OUT_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 Output Value (GPIO[x]_OUT_VAL)
GPIO Output Enable (GPIO[x]_OUT_EN)
00h
R/W
FFFF0000h
04h
R/W
FFFF0000h
GPIOH_OUT_VAL Register Map
GPIOL_OUT_VAL Register Map
GPIOH_OUT_EN Register Map
GPIOL_OUT_EN Register Map
(Continued)
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GPIO High Bank Output Value (GPIOH_OUT_VAL)
GPIO I/O Offset
Type
Reset Value
GPIO High Bank Output Enable (GPIOH_OUT_EN)
GPIO I/O Offset
Type
Reset Value
80h
R/W
FFFF0000h
84h
R/W
FFFF0000h
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Revision 0.8
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