Semtech LR1121 - Info Page; Eraseinfopage; Writeinfopage; Table 2-16: Eraseinfopage Command

LR1121
User Manual Rev 1.1
UM.LR1121.W.APP Mar 2023
23 of 130
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2.5 Info Page
The LR11xx flash memory contains an Info Page of 512 32-bit words, on which the host controller can store user data.
Note: the maximum number of LR11x flash memory R/W accesses is 10k cycles.
2.5.1 EraseInfoPage
The command EraseInfoPage(...) erases the requested Info Page in the LR11xx flash memory.
• InfoPage: can only be 1
• Other values are RFU
2.5.2 WriteInfoPage
The command WriteInfoPage(...) writes a block of 32-bit words in the Info Page flash memory space starting at a
specific word address.
RX to FS 25
RX to TX 118
Table 2-16: EraseInfoPage Command
Byte 0 1 2
Data from Host 0x01 0x21 InfoPage
Data to Host Stat1 Stat2 IrqStatus (31:24)
Table 2-17: WriteInfoPage Command
Byte 0 1 2 3 4 5 6 7
Data from Host 0x01 0x22 InfoPage
InfoWordAddr
(15:8)
InfoWordAddr
(7:0)
data1
(31:24)
data1
(23:16)
data1
(15:8)
Data to Host Stat1 Stat2
IrqStatus
(31:24)
IrqStatus
(23:16)
IrqStatus
(15:8)
IrqStatus
(7:0)
0 0
Table 2-15: Mode Transitions and Timings (Continued)
Transition
T
SW
Mode Typical value (s)