F75113 datasheet(18/87 Pages) FINTEK

18 / 87 page

Dec,2011

V0.13P

- 16 -

F75113

8. Register Description

When users access internal registers by LPC interface, the configuration register will be used to control the

behavior of the corresponding devices. To configure the register, using the index port to select the index and then

writing data port to alter the parameters. The default index port and data port are 2Eh and 2Fh respectively. Write

data 10h in index 27h of global control register to change the default value to 4Eh/4Fh. To enable configuration,

the entry key 50h must be written to the index port. To disable configuration, write exit key AAh to the index port.

Following is an example to enable configuration and disable configuration by using debug.

-o 2e 50

(enable configuration)

-o 2e aa

(disable configuration)

The Following is a register map (total devices) grouped in hexadecimal address order, which shows a summary of all registers and

their default value. Please refer each device chapter if you want more detail information.

Global Control Registers (for LPC interface)

“-“ Reserved or Tri-State

Global Control Registers

0x[HEX]

Default Value

MSB

LSB

Logic Device Number Register (LDN)

Chip ID Register

Vendor ID Register

Configuration Port Select Register

Base Address Enable

8.1.1 Global – Logic Device Number Register - Index 07h

Bit

Name

R/W Default

Description

7-0

LDN

R/W

00h

00h: Global control registers.

01h: Select GPIO control registers.

F75113 Datasheet(PDF) 18 Page - Feature Integration Technology Inc.