Comtrol AT Command Set Rev A - Manual (Page 41)

AT Commands Reference Manual
100722B Conexant 3-15
8. The messages described in Table 3-1 may occur during the uploading process:
Table 3-1. Upload Messages
Message Description
Device not supported Displayed if the FLM used does not support the flash memory that
is installed on the board.
Wrong S37 format Displayed if the modem firmware being uploaded is not in Motorola
S3 format.
Record error Displayed if there is an error while either uploading or
downloading. If this occurs, the transfer should be aborted, and the
user should restart at step 5.
Download abort Displayed if the transfer is aborted before it is finished. If this
occurs, the user should restart at step 5.
Erase fail Displayed if the FLM is unable to erase the flash memory. If this
occurs, the user should restart at step 5.
Download error, Re-Load Displayed if there was an error when uploading or downloading. If
this occurs, the user should restart at step 5.
Error, No H/W flow ctl Displayed if RTS-CTS flow control is not set. If this occurs, the
user should restart at step 3.
DTE timeout Displayed if the DTE has stopped the XMODEM transfer process
before it is finished. If this occurs, the user should restart at step 5.
Code doesn’t match
hardware Displayed if the user is attempting to upload a firmware that either
not the same model (parallel, serial, etc.), crystal frequency, or size
(1Mbit, 2Mbit, etc.) as the firmware that is currently on the board. If
this occurs, the FLM will abort and not allow the user to continue.
Device successfully
programmed Displayed by the FLM at the completion of a successful upload or
download then the modem will do a cold start.
The uploader and downloader flash load modules (FLM) have several built in safety
mechanisms to reduce the risk of a failed flash upload/download. The FLM will not allow
a user to upload a firmware of different model (serial, parallel, etc.) or crystal speed than
what is currently in the flash memory. Also, it will not allow the user to upload a
firmware that is larger in size than the flash memory itself (e.g., a 2Mbit firmware onto a
1Mbit flash memory). It will, however, allow the user to upload a firmware that is smaller
in size than the flash memory, and it will program the firmware with the appropriate
offset in order for the firmware to function properly. In the instance that there is a failure
during the download or upload process, the modem will be in a “flash rescue mode”. In
this mode, the modem will respond “OK” to all AT commands, but will only take action
on the AT** command, so a new attempt to upload or download can be initiated. When
the modem is in the “flash rescue mode” it will only be able to respond to AT commands
if the DTE rate has not been changed since the last AT** command was successfully
issued, even if the modem is powered off and on.