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3.3.2 Command Register
The Command Register is 1-byte, located at address 0x0001, with both read and write access. Writing to this register
is recognized by the module as a command execution request. Depending upon the command (value written to the
register) the Command Parameters Register is parsed to extract arguments for the command. Whilst commands are
executing, the Result Register value is set to 0xFF and the nBUSY line is driven low. When command execution is
complete the memory is updated and the nBUSY line returns to the high state indicating that the module is ready to
receive another command.
is recognized by the module as a command execution request. Depending upon the command (value written to the
register) the Command Parameters Register is parsed to extract arguments for the command. Whilst commands are
executing, the Result Register value is set to 0xFF and the nBUSY line is driven low. When command execution is
complete the memory is updated and the nBUSY line returns to the high state indicating that the module is ready to
receive another command.
3.3.3 Command Parameters Register
Table 3.3
The Command Parameters Register is 18-bytes long, located at addresses from 0x0002 to 0x0013, with both read
and write access. This is the place from where the system parses the arguments necessary to perform requested
operation when a command is executed. Depending upon the command, this register is parsed and interpreted in
different ways. The details of interpretation of the data stored in this register can be found in chapter 4.2. The
module never changes the values inside this register except after power-up or exit from Deep Sleep Mode.
and write access. This is the place from where the system parses the arguments necessary to perform requested
operation when a command is executed. Depending upon the command, this register is parsed and interpreted in
different ways. The details of interpretation of the data stored in this register can be found in chapter 4.2. The
module never changes the values inside this register except after power-up or exit from Deep Sleep Mode.
Register Name
Register Address
Byte Offset
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0C
0x0D
0x0E
0x0F
0x10
Byte Position
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Factory Default Value
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
Read Function
Write Function
Parameters taken when executing commands. Each command has various number and order of parameters.
Command Parameters
0x0002