CS5535 datasheet(450/555 Pages) NSC

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Revision 0.8

GPIO Subsystem Register Descriptions (Continued)

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

30h

Type

Reset Value

00000000h

GPIOL_READ_BACK Register Map

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10

9876543210

RSVD

GPIOL_READ_BACK Bit Descriptions

Bit

Name

Description

31:16

RSVD

Reserved. Reads back 0.

RB_15

GPIO15 Read Back Value. Provides status (1/0) of the associated GPIO ball.

RB_14

GPIO14 Read Back Value. Provides status (1/0) of the associated GPIO ball.

RB_13

GPIO13 Read Back Value. Provides status (1/0) of the associated GPIO ball.

RB_12

GPIO12 Read Back Value. Provides status (1/0) of the associated GPIO ball.

RB_11

GPIO11 Read Back Value. Provides status (1/0) of the associated GPIO ball.

RB_10

GPIO10 Read Back Value. Provides status (1/0) of the associated GPIO ball.

9RB_9

GPIO9 Read Back Value. Provides status (1/0) of the associated GPIO ball.

8RB_8

GPIO8 Read Back Value. Provides status (1/0) of the associated GPIO ball.

7RB_7

GPIO7 Read Back Value. Provides status (1/0) of the associated GPIO ball.

6RB_6

GPIO6 Read Back Value. Provides status (1/0) of the associated GPIO ball.

5RB_5

GPIO5 Read Back Value. Provides status (1/0) of the associated GPIO ball.

4RB_4

GPIO4 Read Back Value. Provides status (1/0) of the associated GPIO ball.

3RB_3

GPIO3 Read Back Value. Provides status (1/0) of the associated GPIO ball.

2RB_2

GPIO2 Read Back Value. Provides status (1/0) of the associated GPIO ball.

1RB_1

GPIO1 Read Back Value. Provides status (1/0) of the associated GPIO ball.

0RB_0

GPIO0 Read Back Value. Provides status (1/0) of the associated GPIO ball.

CS5535 Datasheet(PDF) 450 Page - National Semiconductor (TI)

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