Bourgogne ET Grasset SAS VEGRDE2 Manual De Usuario
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 !
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!
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”)!
4 = ”0”)!