VSC056 datasheet(5/134 Pages) MAXIM

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VSC056

Data Sheet

Revision 4.1

January 2008

General Description..................................................................................................... 1

Features ........................................................................................................................ 1

Applications ................................................................................................................. 1

Typical Applications .................................................................................................... 3

Revision History........................................................................................................... 9

Introduction ....................................................................................................... 10

Functional Descriptions ................................................................................... 11

2.1

Two-Wire Serial Interface ............................................................................................................11

2.2

Control Registers .........................................................................................................................11

2.3

I/O Logic ......................................................................................................................................13

2.4

Clock Generator ..........................................................................................................................13

2.5

Power-on Reset ...........................................................................................................................14

Registers ............................................................................................................ 15

3.1

Control Registers .........................................................................................................................15

3.2

Control Register Definitions .........................................................................................................21

3.2.1

00h: General-Purpose I/O Port 0 Data (GPD0) .............................................................21

3.2.2

01h: General-Purpose I/O Port 1 Data (GPD1) .............................................................22

3.2.3

02h: General-Purpose I/O Port 2 Data (GPD2) .............................................................22

3.2.4

03h: General-Purpose I/O Port 3 Data (GPD3) .............................................................23

3.2.5

04h: General-Purpose I/O Port 4 Data (GPD4) .............................................................23

3.2.6

05h: General-Purpose I/O Port 5 Data (GPD5) .............................................................24

3.2.7

06h: General-Purpose I/O Port 6 Data (GPD6) .............................................................24

3.2.8

07h: General-Purpose I/O Port 7 Data (GPD7) .............................................................25

3.2.9

10h: I/O Port 0 Data Direction (DDP0) ...........................................................................25

3.2.10

11h: I/O Port 1 Data Direction (DDP1) ...........................................................................26

3.2.11

12h: I/O Port 2 Data Direction (DDP2) ...........................................................................26

3.2.12

13h: I/O Port 3 Data Direction (DDP3) ...........................................................................27

3.2.13

14h: I/O Port 4 Data Direction (DDP4) ...........................................................................27

3.2.14

15h: I/O Port 5 Data Direction (DDP5) ...........................................................................28

3.2.15

16h: I/O Port 6 Data Direction (DDP6) ...........................................................................28

3.2.16

17h: I/O Port 7 Data Direction (DDP7) ...........................................................................29

3.2.17

20h: Port Bypass Control 0 (PBC0) ...............................................................................30

3.2.18

21h: Port Bypass Control 1 (PBC1) ...............................................................................31

3.2.19

22h: Port Bypass Control 2 (PBC2) ...............................................................................32

3.2.20

23h: Port Bypass Control 3 (PBC3) ...............................................................................33

3.2.21

24h: Port Bypass Control 4 (PBC4) ...............................................................................34

3.2.22

25h: Port Bypass Control 5 (PBC5) ...............................................................................35

3.2.23

26h: Port Bypass Control 6 (PBC6) ...............................................................................36

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