There is currently a proposed revision to the ISO to remove ambiguities and to ensure an effective method of operation for changing the protocol type. An APDU is an Application Protocol Data Unit, a TPDU a Transport Protocol Data Unit. If an APDU command response pair has been defined for T=0 and it has. ISO/IEC specifies the power and signal structures, and information exchange between an integrated circuit card and an interface device such as a.
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ISO part 3 smart card standard
Electronic signals and answer to reset for synchronous cards”. The following data bits are valid 10us t17 at least oso the falling edge on CLK. TD1 indicates the protocol type TDI as between 0 and 15. After these actions, the interface device waits for a new procedure. It is not defined in the application protocol, although it may map to SW1, the first part of a status word. The historical characters designate general information, for example, the card manufacturer, the chip inserted in isk card, the masked ROM in the chip, the state of the life of the card.
Return to page 2. T0 T1 T2 IR: After the reset signal is applied by the interface 781-63 the IC card responds with an answer to reset.
If 78163- Anwser to Reset does not begin within 40 clock cycles t3 with RST in state H t3 after T1the signal on RST shall be returned to state L at time T2 and the contacts shall be desactivated by the interface device. However, I think there is no need to distinguish le and lc. The dialogue between the interface device and the the card shall be conducted through the consecutive operations:. The duration of the state H of the clock pulse can be any value between 10 us and 50 us ; no more than one clock pulse during reset high is allowed.
If no character repetition is provided by the card, — The card ignores and shall not suffer damage from the error signal coming from the interface device. Parity is checked on the fly.
Interface character [ codes N ] TDi: Iao this situation the IFD should await a further procedure byte. The priority of testing for asynchronous or synchronous cards is not defined in this standard. Each data bit is valid until the next falling edge the following clock pulse on CLK.
This allows the interface device to determinate the etu initially used by the card. Next data byte is transferred subsequently.
PI1 from 5 to 25 gives the value of P in volts. Created inupdated in In terms of the OSI model this protocol operates at layer 2, the data link layer.
Cards with contacts — Physical characteristics”. The coding and use of PTS3 is not defined. Power supply voltage at VCC Vpp: This subject is being considered further as part of the emerging part 4 of the ISO standard.
Three types of procedure bytes are specified: If you send “00 84 00 00 08” to card, card can response with “xx xx xx xx xx xx xx xx 90 00”.
The PTS0 format character is encoded as shown in figure This application contains information on cryptographic functionality. Historical characters max,15 TCK: There are two status bytes SW1 781-63 SW2.
We will discuss the interface bytes and protocol type selection against these proposed isoo but readers are warned that these recommendations are only provisional. High level output current Iol: These parameters are used 716-3 defining the work etu elementary time unit.
The receiver then shall expect a repetition of the disputed character see figure 8. It is assumed that the card and the interface device know a priori the direction of data, in order to ditinguish between instructions for incoming data transfer where data enter the card during execution and instructions for outgoing data transfers where data leave the card during execution.
In other projects Wikimedia Commons. For this protocol, data can only flow in one direction for the command response pair.
Idle state and active state, as defined in table 2. Commands for card management”. The chronological order of transmission of information bits shall correcpond to bit identification b1 to b32 with the least significant bit transmitted first. 78116-3