HT-CM400 NXP Semiconductors, HT-CM400 Datasheet - Page 28

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

Communication Reader-Host
3.7.13 GetSnrReset_LT
This command is applied to a HITAG 2 transponder which is currently not in Password or Crypto
Mode but in one of the Public Modes. The command selects the transponder and provides its
serial number and Configuration Byte.
If the byte -Status- shows „no error“ the transponder is selected and ready for read or write
accesses.
The byte -mode- decides whether the selection process for the transponder is done corresponding
to the Password Mode or the Crypto Mode.
C-Function: void proloc_GetSnrReset_LT (BYTE_T mode, DWORD_T *snr,
Header-File: PROLBLT6.H
Serial protocol:
HOST - READ/WRITE DEVICE
mode:
READ/WRITE DEVICE - HOST
config:
n = 0 if an error occurred (error code in Status).
n = 5 if data were read from a transponder (Status = 0).
Status:
Htswp.doc/HS
0x03
n+2
0x80
Status
0x00 ... Password
0x01 ... Crypto
Configuration Byte of HITAG 2
-1 ...
-3 ...
-5 ...
-6 ...
-7 ...
0 ... no error
mode
SERIAL ERROR
NOTAG
INCORRECT PASSWORD RWD
INCORRECT PASSWORD TAG
AUTHENTICATION ERROR
7
SNR-LSB
‘M’
0
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Rev. 1.0
BYTE_T *config);
31
SNR-MSB
24
config
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98-02-10