cs5535 National Semiconductor Corporation, cs5535 Datasheet - Page 450
cs5535
Manufacturer Part Number
cs5535
Description
Geode Cs5535 Companion Multi-function South Bridge
Manufacturer
National Semiconductor Corporation
Datasheet
1.CS5535.pdf
(555 pages)
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GPIO Subsystem Register Descriptions
5.16.2.19 GPIO Read Back (GPIO[x]_READ_BACK)
The Read Back registers provide the current values of the states of each GPIO as sent to the ball. The
GPIO[x]_READ_BACK registers are not based on the atomic programming model since these are not control registers.
GPIO Low Bank Read Back (GPIOL_READ_BACK)
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
31:16
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Name
RSVD
RB_15
RB_14
RB_13
RB_12
RB_11
RB_10
RB_9
RB_8
RB_7
RB_6
RB_5
RB_4
RB_3
RB_2
RB_1
RB_0
30h
RO
00000000h
RSVD
Description
Reserved. Reads back 0.
GPIO15 Read Back Value. Provides status (1/0) of the associated GPIO ball.
GPIO14 Read Back Value. Provides status (1/0) of the associated GPIO ball.
GPIO13 Read Back Value. Provides status (1/0) of the associated GPIO ball.
GPIO12 Read Back Value. Provides status (1/0) of the associated GPIO ball.
GPIO11 Read Back Value. Provides status (1/0) of the associated GPIO ball.
GPIO10 Read Back Value. Provides status (1/0) of the associated GPIO ball.
GPIO9 Read Back Value. Provides status (1/0) of the associated GPIO ball.
GPIO8 Read Back Value. Provides status (1/0) of the associated GPIO ball.
GPIO7 Read Back Value. Provides status (1/0) of the associated GPIO ball.
GPIO6 Read Back Value. Provides status (1/0) of the associated GPIO ball.
GPIO5 Read Back Value. Provides status (1/0) of the associated GPIO ball.
GPIO4 Read Back Value. Provides status (1/0) of the associated GPIO ball.
GPIO3 Read Back Value. Provides status (1/0) of the associated GPIO ball.
GPIO2 Read Back Value. Provides status (1/0) of the associated GPIO ball.
GPIO1 Read Back Value. Provides status (1/0) of the associated GPIO ball.
GPIO0 Read Back Value. Provides status (1/0) of the associated GPIO ball.
GPIOL_READ_BACK Bit Descriptions
GPIOL_READ_BACK Register Map
(Continued)
450
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Revision 0.8
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