Issue link: https://read.uberflip.com/i/1503174
US915 and AU915 ChMaskCtrl ContradictionThe LoRa Alliance © 2021 5 ************************ Start of proposed change for 2.8.5 ************************* 2.8.5 AU915-928 LinkAdrReq command For the AU915-928 channel plan of LoRaWAN® supports a minimum of 72 and a maximum of 80 channels. The ChMaskCntl field of the LinkADRReq command has the following meaning: ChMaskCntl ChMask applies to 0 Channels 0 to 15 1 Channels 16 to 31 2 Channels 32 to 47 3 Channels 48 to 63 4 Channels 64 to 79 5 810 LSBs (bits 0-7) controls Channel Blocks 0 to 7, bit 9 controls Channel Block 9 only when channels in this block have been previously created.9 (bit 8 and 6 MSBs (bits 10- 15) are RFU) 6 All 125 kHz ON: ChMask applies to channels 64 to 79 7 All 125 kHz OFF: ChMask applies to channels 64 to 79 Table 3: AU915-928 ChMaskCntl value table If ChMaskCntl = 5 2 then bits 0-7 in the ChMask enable and disable a bank of 8 125 kHz channels and the corresponding 500 kHz channel defined by the following calculation: [ChannelMaskBit * 8, ChannelMaskBit * 8 +7],64+ChannelMaskBit. Bits 8 and 9 in the ChMask enable and disable a bank of 8 channels defined by the following calculation: [ChannelMaskBit * 8, ChannelMaskBit * 8 +7]. If ChMaskCntl = 6 then 125 kHz channels are enabled, if ChMaskCntl = 7 then 125 kHz channels are disabled. Simultaneously the channels 64 to 791 are set according to the ChMask bit mask. The Data Rate specified in the command need not be valid for channels specified in the ChMask, as it governs the global operational state of the end-device. ************************* End of proposed change for 2.8.5 **************************** 2 Added in LoRaWAN® Regional Parameters Specification version 1.0.3rA