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
-o 2e 50
-o 2e aa
(enable configuration)
(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
Register
0x[HEX]
Default Value
Register Name
MSB
LSB
07
20
21
23
24
27
30
Logic Device Number Register (LDN)
Chip ID Register
0
0
0
0
0
0
-
0
0
0
0
1
-
0
1
1
1
1
0
-
0
0
0
1
0
-
0
0
0
0
1
-
0
0
0
0
0
-
0
0
0
0
0
-
0
1
1
0
-
Chip ID Register
Vendor ID Register
Vendor ID Register
Configuration Port Select Register
Base Address Enable
-
-
-
-
-
-
0
8.1.1 Global – Logic Device Number Register - Index 07h
Bit
Name
R/W Default
Description
00h: Global control registers.
01h: Select GPIO control registers.
7-0
LDN
R/W
00h
- 16 -
Dec,2011
V0.13P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
