PCF7936AS/3851/C,1-CT NXP Semiconductors, PCF7936AS/3851/C,1-CT Datasheet - Page 10

• Manufacturer Part Number: PCF7936AS/3851/C,1-CT
• Description: pcf7936as series 32-bit 125 khz read / write security...
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Security Transponder (HITAG2)
Mode Select, MS
The device may be configured for to support one out of
three Read Only modes, which will cause the device to
commence data transmission after the specified time-out
period, without interrogation by the basestation, see
Table 1.
Note
1. Emulates
2. Features compatibility with NXP’ PIT family operated in
For details regarding the timing and sequence transmitted
refer to section 7.5.
If MS is set, the device does not support Read Only
operation at all.
Data Coding Select, DCS
In Password or Cipher mode data transmitted from the
transponder to the basestation may be encoded in
Manchester or CDP fashion, according to the setting of
DCS.
If DCS is cleared, Manchester encoding is applied,
otherwise CDP coding is applied, see section 7.6.1 for
details.
However, if the device operates in one of the Read Only
modes, data transmission and encoding corresponds to the
Read Only mode selected and is not affected by DCS at all,
see section 7.5 for details.
2010 May 04
Table 1. Mode Select
transponders
Read Only mode, except for the PMC timing (Program
Mode Check) and available memory size.
MS1
0
0
1
1
MIRO
MS0
0
1
0
1
and
Read Only Mode
PCF7931/30/35
H400x
ISO 11784/5
Disabled
MIRO
like
Read Only
Note
1
2
10
7.1.5 Password Transponder, PSW
The Password Transponder, PSW
which typically is initialized and subsequently locked by the
customer during device personalization. The Password
Transponder is located in page 3, see Figure 4.
The Password Transponder serves the function to identify
the transponder towards the basestation. After successful
device authentication, the transponder returns the content
of page 3 to the basestation. In Password mode the content
is returned in plain, while in Cipher mode the content is
returned in ciphered fashion. For details refer to
section 7.3.1, START_AUTH command.
Thus the Password Transponder and TMCF configuration
may be evaluated by the basestation, if desired. The
Password Transponder may hold any value that is
considered useful by the application.
7.1.6 User Pages, USER 0 to 3
Page 4 to 7 provide space for user data storage. Data
access is supported according to the device configuration
selected.
The user pages may hold any data that is considered
useful by the application.
Product Specification
T
, is a 24 bit pattern,
T
PCF7936AS
CONFIDENTIAL