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Bourgogne ET Grasset SAS VEGRDE2 Manuel D’Utilisation

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27-07-2002 
 
Vegas Long Range Read/Write Device  
Page 45 (48) 
Confidentiality Level 1 
           
Vegrde3/EG 
Bourgogne et Grasset  -– ZI Beaune Savigny  -– 21200 Beaune  –  France  –  Tel. +33 380 26 26 26  –  Fax. +33 3 80 26 26 00 
 
 
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  OTP 1 / Bit 5, 6 and 7 
 
These three bits cannot be changed. 
 
 
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  OTP 1 / Bit 4 
 
Is this bit set to "0" the configuration page only can be read, so the configuration of the data 
carrier can not be changed again! 
 
Attention: Once the OEM Lock Bit is set to zero, the memory configuration 
cannot be changed again. This process is irreversible ! 
 
 
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  OTP 1 / Bit 3 
 
You must not change this bit to ”1”, it must be "0" or the data carrier cannot be 
operated any more! 
 
 
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  OTP 1 / Bits 1 and 2 
 
You can use these two bits whichever way you like as they are of no consequence for the data 
carrier configuration. 
 
 
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  Moving the Public area limit: OTP 1 / Bit 0 
 
This bit determines the access type for Blocks 4 to 7: 
 
 
OTP 1 / Bit 0  = 
”0” 
Access to Blocks 4 to 7 
SECRET 
 
OTP 1 / Bit 0  = 
”1” 
Access to Blocks 4 to 7 
PUBLIC 
 
You can choose the type of access only for the total of Blocks 4 to 7. 
 
 
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  OTP Bytes 2 and 3 
 
You can use these two bytes freely. They will not affect memory configuration. For example, the 
OEM client can put his own OEM serial number here. 
 
Attention: These two bytes, too, are set to read only by the OEM Lock Bit (OTP 1 / Bit 
4 = ”0”)!