Readinfopage; Table 2-18: Readinfopage Command; Table 2-19: Readinfopage Response - Semtech LR1121 User Manual

Byte
Data from Host
Data to Host
•
InfoPage: can only be 1. Other values are RFU.
•
InfoWordAddr: starting address of the data block in the Info Page. The address is auto incremented after each data
word so that data is stored in contiguous memory locations.
•
data: data block to be written in the Info Page. Data length should be a multiple of 4. The maximum value for N is 64.

2.5.3 ReadInfoPage

The command ReadInfoPage(...) reads a block of 32-bit words in Info Page flash memory space starting at a specific
word address.

Table 2-18: ReadInfoPage Command

Byte
Data from Host
Data to Host

Table 2-19: ReadInfoPage Response

Byte
Data from Host
Data to Host
•
InfoPage: can only be 1. Other values are RFU.
•
InfoWordAddr: starting address of the data block in the Info Page. The address is auto incremented after each data
word so that data is stored in contiguous memory locations.
•
InfoReadLen: number of words to read. The maximum value for InfoReadLen is 64.
There is no check when reaching the end of Info Page. Therefore the first word of data after Info Page (at address 512) will
correspond to other LR11x flash memory data outside of the Info Page.
LR1121
User Manual Rev 1.1
UM.LR1121.W.APP Mar 2023
8 9 10
data1 data2 data2
(7:0) (31:24) (23:16)
0 0 0
0 1 2
0x01 0x23 InfoPage
Stat1 Stat2 IrqStatus (31:24)
0 1 2
0x00 0x00 0x00
data1 data1
Stat1
(31:24) (23:16)
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...
...
...
3
InfoWordAddr (15:8)
IrqStatus (23:16)
3 4 5
0x00 0x00 0x00
data1 data1 data2
(15:8) (7:0) (31:24)
N*4+4
dataN
(7:0)
0
4
InfoWordAddr (7:0) InfoReadLen
IrqStatus (15:8) IrqStatus (7:0)
6 ... N*4
0x00 ... 0x00
data2 data2
...
(23:16) (7:0)
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