HT-CM400 NXP Semiconductors, HT-CM400 Datasheet - Page 73

• Manufacturer Part Number: HT-CM400
• Description: Ht Cm400; Ht Rm440 Family; Ht Rm800 Family Interface Protocol Reader - Host
• Manufacturer: NXP Semiconductors

98-02-10
3.8.10 WriteControl_LT
This command writes a new value to the control byte Control_LT into the EEPROM of the
read/write device. Control_LT is related to the HITAG 2 transponder.
Initial value stored in the EEPROM of a delivered read/write device:
ATTENTION: Once a bit in Control_LT has been set to ‘0’ it is impossible to change it
back to one. We strongly recommend to read Chapter „Personalization“ carefully before
using this command.
C-Function: void proloc_WriteControl_LT (BYTE_T control_lt);
Header-File: PROLBLT6.H
Serial protocol:
HOST - READ/WRITE DEVICE
Control_LT: see Chapter „Personalization“
READ/WRITE DEVICE - HOST
Status:
If any error occurs KeyInit Mode is exited immediately.
0x03
0x02
Control_LT = 0xFF
Status
0x91
-12 ... EEPROM WRITE PROTECTED
- 1 ... SERIAL ERROR (in this case the error can also mean, that the read/write
0 ... no error
Control_LT
BCC
device is not in the KeyInit Mode!)
BCC
Page 73 (104)
Rev. 1.0
Communication Reader-Host
Htswp.doc/HS