F71862
8. Register Description
The configuration register is 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 0x4E and 0x4F respectively. Pull down the SOUT1 pin to change the
default value to 0x2E/0x2F. To enable configuration, the entry key 0x87 must be written to the index port.
To disable configuration, write exit key 0xAA to the index port. Following is a example to enable
configuration and disable configuration by using debug.
-o 4e 87
-o 4e 87
-o 4e 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
“-“ Reserved or Tri-State
Global Control Registers
Register
0x[HEX]
Register Name
Default Value
MSB
LSB
02
07
20
21
23
24
25
26
27
28
29
2A
2B
2C
2D
Software Reset Register
-
-
0
0
0
0
0
-
-
-
-
-
-
0
Logic Device Number Register (LDN)
Chip ID Register
0
0
0
0
0
-
0
0
0
0
1
0
-
0
0
0
1
1
0
-
0
0
0
1
0
0
-
0
1
0
0
1
0
-
0
1
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
Chip ID Register
Vender ID Register
Vender ID Register
Software Power Down Register
UART IRQ Sharing Register
ROM Address Select Register
Power LED Function Select Register
Multi Function Select 1 Register
Multi Function Select 2 Register
Multi Function Select 3 Register
Multi Function Select 4 Register
Wakeup Control Register
0
0
-
-
0/1 1/0 1/0 0/1 0/1 0/1
-
-
-
0
-
0
0
0
0
0
0
0
0
0
0
0
0
-
0
0
0
0
-
0
0
0
0
-
0
0
0
0
-
0
0
0
0
0
0
0
1
68
July, 2008
V.28P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
