Character Timing for T=0

Source: Internet
Author: User

The minimum interval between the leading edges of the "start bits of" consecutive characters sent by the terminal to The ICC shall is between and 266 ETUs as determined by the value of TC1 returned at the answer to reset (See sections 8.2 and 8.3). This interval is less than the minimum interval of ETUs allowed between, characters sent in opposite directions. If the value returned in TC1 are N, the ICC shall be able to correctly interpret characters sent by the terminal with a MI Nimum interval between the leading edges of the start bits of of the consecutive characters of 11.8 + N ETUs.

CGT: The minimum time interval between two consecutive characters that the terminal sends an IC card is 12~266 ETU. It is mainly used to control the speed at which the terminal sends the characters, not exceeding the acceptable speed of the IC card. If the data is sent over a 7816 controller, the 7816 controller will have a register that holds the CGT value for the controller to control the speed of the transmission itself. The actual code is represented by the value of the TC1 to calculate the CGT and save to the register of the response.

The minimum interval between the leading edges of the "start bits of the" consecutive characters sent by the ICC to the Terminal shall be ETUs. The terminal shall is able to correctly interpret characters sent by the ICC with a minimum interval between the leading E Dges of the start bits of the consecutive characters of 11.8 ETUs.

The minimum time interval between two consecutive characters that the IC card sends to the terminal is 12etu. Even if the minimum interval is 11.8 ETU, the terminal should be able to handle it normally. Equivalent to the terminal to provide a minimum indicator, mainly to see whether the controller conforms to the indicator, the actual code is not reflected.

The maximum interval between the leading edge of the the start bit of any character sent by the ICC and the leading E Dge of the start bit of the previous character sent either by the ICC or the terminal (the work waiting time, or WWT) shall not exceed 960 x D x WI ETUs (D and WI is returned in TA1 and TC2, respectively).

WWT (work, etc.): the maximum time interval between the "IC sends the next character" and "the last character sent by the IC" or "final character sent by the terminal" does not exceed 960*d*wi ETU. Where the D value is in TA1, the WI value is in TC2. It is mainly used for timeout processing when the terminal receives characters, and detects if the IC card is not responding.

The terminal shall is able to correctly interpret a character sent by the ICC with a maximum interval between the lead ing edge of the the start bit of the character and the leading edge of the the start bit of the previous character sent either by The ICC or the terminal of {WWT + (D x 480)} ETUs. If no character is received, the terminal shall initiate the deactivation sequence within {WWT + (D x 9600)} ETUs Followin G The leading edge of the the character from which the timeout occurred.

As long as the IC sends the next character within {WWT + (D x 480)} ETU, the terminal should be able to handle it. That is, the terminal timeout detection time is {WWT + (D x 480)} ETU. If the terminal does not receive the next character within the time-out period, it should be WWT in the {C + + (D x 9600)}etu. The actual code is embodied in, save {WWT + (D x 480)} value, for time-out detection processing, can generally be able to power down within the specified time, so {WWT + (D x 9600)} does not need to worry too much.

For the ICC or terminal, the minimum interval between the leading edges of the ' start bits of the last character Receiv Ed and the first character sent in the opposite direction shallis ETUs. The ICC or terminal shall is able to correctly interpret a character received within all ETUs timed from the leading edge O f the character sent to the leading edge of the the start bit of the the received character. These timings do not apply during character repetition.

The minimum time interval between two characters in the opposite direction of the IC card or terminal is 16etu.

Character Timing for T=0

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