MSR120D Programmer’s Manual UDN PM009 Rev. E
Section 6 – Firmware Download 2005/2/23
Command BL --- Request the reader to enter boot mode
When the reader receives this command from host, it will go into boot mode and let LED goes red flashing
without responding any message to host.
Command:
BL, RS, CS, ES, BC
Command Format: <Header><Address><Command Length><Command>{LRC}
Data Element
Size
Comments
<Header> 1H
Packet Command Header, value: 09h
<Address> 1H
Address, value: 00h (default)
<Command Length>
1H
Indicate the length of <command>, value: 02h
<Command> 2H
Command code
{LRC} 1H
Error Check
Maximum: 6 characters Minimum: 6 characters
Command RS --- Programming reset
After download done, the host shall send this command to the reader to reset the reader. As soon as the reader
receives this command, it will execute all initialization functions (device will respond exactly as it would for a
"power on" cycle) and let the reader back to system mode.
Note: The command format can be found in command BL section
.
Command CS --- Request checksum of system program
The host sends this command to request the checksum (2-byte) of system program.
Note: The command format can be found in command BL section
.
Host to Reader
Flow
of download
Command CS
Host
Reader
Send command to reader
=====
►
◄
=====
Response 2-byte checksum (High + Low)
Command ES --- Erase system program area by filling with FFh
When the reader receives this command, it starts to fill FFh into system program area.
Note: The command format can be found in command BL section
.
Host to Reader
Flow
of download
Command ES
Host
Reader
Send command to reader
=====
►
◄
=====
ACK if LRC okay
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