LLCC68 datasheet(90/106 Pages) SEMTECH

90 / 106 page

LLCC68

Data Sheet

Rev. 1.0

DS.LLCC68.W.APP

July 2019

90 of 106

Semtech

www.semtech.com

13.5 Communication Status Information

These commands return the information about the chip status, and received packet such a packet length, received power

during packet, several flags indicating if the packet as been correctly received. The returned parameters differ for the LoRa®

protocol.

13.5.1 GetStatus

The host can retrieve chip status directly through the command GetStatus(): this command can be issued at any time and

the device returns the status of the device. The command GetStatus() is not strictly necessary since device returns status

information also on command bytes. The status byte returned is described in Table 13-76.

The SPI transaction for the command GetStatus() is given in the following table.

Table 13-76: Status Bytes Definition

6:4

3:1

Reserved

Chip mode

Command status

Reserved

0x0: Unused

0x0: Reserved

RFU

0x2: STBY_RC

0x2: Data is available to host1

1. A packet has been successfully received and data can be retrieved

0x3: STBY_XOSC

0x3: Command timeout2

2. A transaction from host took too long to complete and triggered an internal watchdog. The watchdog mechanism can be disabled by host; it

is meant to ensure all outcomes are flagged to the host MCU.

0x4: FS

0x4: Command processing error3

3. Processor was unable to process command either because of an invalid opcode or because an incorrect number of parameters has been

provided.

0x5: RX

0x5: Failure to execute command4

4. The command was successfully processed, however the chip could not execute the command; for instance it was unable to enter the specified

device mode or send the requested data,

0x6: TX

0x6: Command TX done5

5. The transmission of the current packet has terminated

Table 13-77: GetStatus SPI Transaction

Byte

Data from host

Opcode = 0xC0

NOP

Data to host

RFU

Status

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