User's Manual

24
Micro-reader - Reference Guide May ’00
4.1 Transponder commands
This section describes the protocols that need to be sent by the PC to the transpon-
der via the Micro-reader in order to execute the required function.
4.1.1 Read RO, R/W
Figure 6: Read Function
4.1.2 Program R/W
Figure 7: Programming Data Format of the 64-bit Read/Write Transponder
Write Keyword : BB
hex
Write Password : EB
hex
Write Frame : 0300
hex
4.1.3 Addressing MPTs/SAMPTs
Since MPT/SAMPTs allow the execution of the different commands applicable to
multiple pages the 'Write Address' needs to be sent within the protocol in order to de-
termine the function to be executed with a specific MPT/SAMPT page.
WRITE ADDRESS
MSB LSB
P P P P P P C C
||
PAGE COMMAND
MSB LSB MSB LSB
Page 1 000001 00 General read page
Page 2 000010 01 Program page
. . . 10 Lock page
Page 16 010000 11 Selective read
Page 17 010001
OFF
ON
READ
50 ms 20 ms
RF TRANSMITTER
POWER BURST
READ
20 ms
50 ms
WRITE
KEYWORD
8
80 16
16 ms 160 ms 32 ms
15 ms
PASSWORD
8
16 ms
112 bit
309 ms
WRITE WRITE
FRAME
WRITE DATA
128 bit
LSB MSB
OFF
ON
POW ER BURST I
PB II
RF TRANSMITTER