Memory Access; Writeregmem32; Readregmem32; Table 3-7: Writeregmem32 Command - Semtech LR1121 User Manual

3.7 Memory Access

3.7.1 WriteRegMem32

Command WriteRegMem32(...) writes blocks of 32-bit words in register/memory space starting at a specific address.

Table 3-7: WriteRegMem32 Command

Byte 0
Data from Host 0x01
Data to Host Stat1
Byte
Data from Host
Data to Host
•
The address is auto incremented after each data byte so that data is stored in contiguous register/memory locations.
•
The value of N is maximum 64.

3.7.2 ReadRegMem32

Command ReadRegMem32(...) reads blocks of 32-bit words in register/memory space starting at a specific address.

Table 3-8: ReadRegMem32 Command

Byte 0
Data from Host 0x01
Data to Host Stat1

Table 3-9: ReadRegMem32 Response

Byte 0
Data from Host 0x00
Data to Host Stat1
• The address is auto incremented after each data byte so that data is read from contiguous register locations.
• Len is the number of words to read, and is maximum 64.
LR1121
User Manual Rev 1.1
UM.LR1121.W.APP Mar 2023
1 2
Addr
0x05
(31:24)
IrqStatus
Stat2
(31:24)
8 9
Data1 Data1
(15:8) (7:0)
0x00 0x00
1 2
Addr
0x06
(31:24)
IrqStatus
Stat2
(31:24)
1 2
0x00 0x00
Data1 Data1
(31:24) (23:16)
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3 4
Addr Addr
(23:16) (15:8)
IrqStatus IrqStatus
(23:16) (15:8)
10
Data2
(31:24)
0x00
3
Addr Addr
(23:16) (15:8)
IrqStatus IrqStatus
(23:16) (15:8)
3 4
0x00 0x00
Data1 Data1
(15:8) (7:0)
5 6
Addr Data1
(7:0) (31:24)
IrqStatus
0x00
(7:0)
... 4*N +5
...
...
4 5
Addr
(7:0)
IrqStatus
(7:0)
5 ...
0x00 0x00
Data2
...
(31:24)
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7
Data1
(23:16)
0x00
DataN
(7:0)
0x00
6
Len
0x00
4*N
0x00
DataN
(7:0)
31 of 130
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